CORNELL 
 
 UNIVERSITY 
 
 LIBRARY 
 
 BOUGHT WITH THE INCOME 
 OF THE SAGE ENDOWMENT 
 FUND GIVEN IN 1891 BY 
 
 HENRY WILLIAMS SAGE 
 
Cornell University Library 
 QE 438.S36 
 
 Chemical analyses of Texas rocks and min 
 
 3 1924 004 583 831 
 
Cornell University 
 Library 
 
 The original of tiiis book is in 
 tine Cornell University Library. 
 
 There are no known copyright restrictions in 
 the United States on the use of the text. 
 
 http://www.archive.org/details/cu31924004583831 
 
3#% 
 
 B291-818-2m 
 
 University of Texas Bulletin -^^ 
 
 No. 1814: March 5, 1918 
 
 CHEMICAL ANALYSES OF TEXAS ROCKS 
 AND MINERALS 
 
 By 
 E. P. SCHOCH 
 
 BUBEAU or ECONOIVaC asOI^OG-'S' AND TECHITOI^OGT 
 J. A. TTDSEIT, Director 
 
 DIVISION OF CaEBnSTBT 
 E. F. SCHOCH, Head of the Divlaion 
 
 PUBLISHED BY THE UNIVERSITY SIX TIMES A MONTH, AND ENTERED AS 
 
 SECOND-CLASS MATTER AT THE POSTOFFICE AT AUSTIN. TEXAS. 
 
 UNDER THE ACT OF AUGUST 24, 1912 
 

 The benefits of education and ot 
 useful knowledge, generally diffused 
 through a community, are essential 
 to the preservation of a free govern- 
 ment. 
 
 Sam Houston 
 
 Cultivated mind is the guardian 
 genius of democracy .... It is the 
 only dictator that freemen acknowl- 
 edge and the only security that free- 
 men desire. 
 
 Mirabeau B. Lamar 
 
 3 
 
TABLE OP CONTENTS 
 
 Page 
 Key for Use of this Publication 1 
 
 INTEODUCTION 
 
 Origin and Purpose of this Publication 2 
 
 Arrangement of Material 2 
 
 Sources, Selection, and Tabulation of Analytical Data 3 
 
 Abbreviations of Sources of Anaylses 5 
 
 List of Sources of Analyses 5 
 
 List of Analysts (Key to Initials of Names) 11 
 

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 4) 
 
 
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 PM 
 
 l^ 
 
 
 169-184 
 
 169 
 
 
 iv Table of Contents 
 
 CLASSIFICATION OF ANALYZED MATERIALS 
 
 *Note: — ^Part 1 presents Sources of Samples, etc.; Part 2 presents 
 the Analytical Results. 
 
 .2 d ^ ■ 
 
 to 57 
 
 <! PL, 
 
 A. SEDIMENTARY ROCKS 1-1151 15-67 
 
 I Sajstd and Sandstone 1-33 15-19 
 
 Note on Composition of Sand 
 
 Used Industrially 15 
 
 II Geeensand 34-76 19-22 170 
 
 Note en Composition and Occur- 
 rence of Greensands in Texas 19 
 
 III Alluvium 77-93 22-24 171 
 
 Note on Composition 22 
 
 Ilia Caliche 93a-93b 23-24 171 
 
 Definition of Term 23 
 
 IV Clay, Shale, AND Mael 94-311 24-36 171-175 
 
 Definition of Terms 24 
 
 V PuLLEE's Babth 312-319 36-38 175 
 
 Note on Composition and Method 
 
 of Testing to Reveal Quality 36 
 
 - . VI , Limestone 748-1061 38-59 175-181 
 
 ISrote on Occurrence and Com- 
 position 38 
 
 Cambrian 746 39 175 
 
 OrdGvician 747-753 39 176 
 
 Pennsylvanlan 754-775 40-41 176 
 
 Permian 776-790 41 176 
 
 Comanchean Cretaceous 791-908 42-48 176-179 
 
 Upper Cretaceous 909-940 48-49 179 
 
 Tertiary 941-943 50 179 
 
 Pleistocene 944-947 50 179 
 
 Unclassified 948-1061 50-59 180-181 
 
 VII Dolomite 1062-1090 59-62 182 
 
 Note on Composition, Properties, 
 
 and Occurrence 59 
 
 VIII Kaolin! 1091-1096 62-63 182 
 
 Introductory Note 62 
 
 IX Salt 1097-1100 63 182 
 
 Note on Occurrence - 63 
 
 X Anhtdeite 1101 63-64 183 
 
 Introductory Note 63 
 
Table of Contents 
 
 T-l 
 
 o 
 52 
 
 ™ o a) tH a) i< 
 
 cS 2; M as bfi aJ 
 
 rt cs fc oj PL, 
 
 <! Cu D-. 
 
 XI NovAcuLiTE 1102-1105 64 183 
 
 Note on Composition, Use and 
 
 Occurrence 64 
 
 XII Phosphatic Rocks 1106-1120 64-65 183 
 
 Note on Occurrence 64 
 
 XIII AsPHALTic Rocks 1121-1151 65-67 184 
 
 Note on Occurrence 65 
 
 B. IGNEOUS ROCKS 1152-1231 67-73 184-187 
 
 Introductory Note 67 
 
 C. METAMORPHIC ROCKS 1234-1237 73-75 188 
 
 I Marble 1234-1237 74-75 188 
 
 II Serpentine. 1238 75 188 
 
 LIGNITE 1239-1462 75-88 189-195 
 
 Note on Occurrence 75 
 
 COAL 1463-1573 88-95 196-198 
 
 Note iOn Occurrence. 88 
 
 I Pennstlvanian 1463-1501 
 
 II Cretaceous 1502-1557 
 
 III Cannel Coal 1558-1573 
 
 IRON ORE 1574-1813 
 
 Note on Occurrence 
 
 I Tektiaey Obes 1574-1717 
 
 II Otiieb Ikon Ores 1718-1813 
 
 ORES OTHER THAN IRON 1814-2025 
 
 I COPPEB Ore 1814-1885 
 
 II SiLVEE Obe 1886-1921 
 
 III Lead Ore 1922-1950 
 
 IV Gold Ore 1952-1963 
 
 V Zinc Ore 1984-1974 
 
 VI Mebcubt Ore 1975-2005 
 
 VII Manganese Ore 2006-2014 
 
 VIII Titanium Ore 2015 
 
 IX Tungsten Obe 2016-2023 
 
 X Uranium Ore 2024-2025 
 
 XI Sulphur Ore 3075-3098 
 
 Introductory Note 119 
 
 POTASH SOURCES 3099-3160 121-124 255-256 
 
 NITRATE SOURCES 3157-3162 124 253 and 256 
 
 88-90 
 
 196-197 
 
 91-94 
 
 197-198 
 
 94-95 
 
 198 
 
 96-108 
 
 199-202 
 
 96 
 
 
 96-103 
 
 199-201 
 
 103-108 
 
 201-202 
 
 108-119 
 
 203-205 
 
 108-112 
 
 203 
 
 112-114 
 
 203 
 
 114-115 
 
 203 
 
 115 
 
 203-204 
 
 115-116 
 
 204 
 
 116-117 
 
 204 
 
 117-118 
 
 205 
 
 118 
 
 205 
 
 118-119 
 
 205 
 
 lift 
 
 205 
 
 119-121 
 
 254 
 
 119 
 
 
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 Ph 
 
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 5 
 
 To&ie 0/ Contents 
 
 m d _, 
 
 ^ o 0, -K 
 
 CS Z fciO 03 
 
 fl CS PL, 
 
 <! Cu 
 
 NATURAL GAS 2116-2153 125-127 
 
 Note on Sources, Composition, etc 125 
 
 "WATER 2154-3011 128-163 207-249 
 
 Relation of Compcsition to 
 
 Source 128 
 
 Manner of Reporting the Analyt- 
 ical Results 129 
 
 Relation between Salt Content 
 
 and Quality 131 
 
 I Well Wateb 2154-2573 134-157 207-227 
 
 II SUBFACE Water 2574-2957 158-160 227-246 
 
 III Unclassified Water 2958-3011 160-163 246-249 
 
 MINERALS OP DEFINITE COMPOSI- 
 TION 
 
 AtLAjriTE, Llano County 3065 165 254 
 
 Andradite, Mason County 3056-3057 165 253 
 
 AsBOLiTE, Culberson County 3026 163 250 
 
 AtjGiTE, Uvalde County 3061 166 253 
 
 Baette, Llano County 3036 164 251 
 
 Bauxite, Culberson County 3027a 164 250 
 
 Bauxite, Reeves County 3027b-3027c 165-166 250 
 
 Borax, El Paso County 3038 164 251 
 
 Celestite, Travis County 3066 166 253 
 
 Chalcocite, Jones County 3033-3034 164 251 
 
 Eglestonitb, Brewster County 3023 163 250 
 
 Bpsomite, Brown County 3070-3071 163 254 
 
 Pebgusonite, Llano County 3046-3047 164 252 
 
 Gadolinite, Burnet and Llano Coun- 
 ties 3028-3031 163-164 251 
 
 Gbahamite, Payette County 3064 164 253 
 
 Geahamite, Webb County 3063 166 253 
 
 Graphite, Llano County 3073-3074 165 254 
 
 Halloysite, Edwards .County 3037 164 251 
 
 Jet, Presidio County 3062 165 254 
 
 Kleinite, Brewster County 3012-3021 163 250 
 
 Mackintoshite, Llano County. ...3048-3049 165 252 
 
 Metagadolinite, Llano County 3051 165 252 
 
 Onyx, San Saba County 3058-3059 166 253 
 
 PowERLiTE, Llano County 3052 165 253 
 
 RowxANDiTE, Llano County 3041 164 251 
 
 SoAPSTONE, Llano County 3035 164 251 
 
 Spessarite, Llano County 3042 164 251 
 
Table of Contents vii 
 
 •S 13 ^ iz; <^ 
 
 Tengerite, Llano County 3050 165 252 
 
 Tephroite, Mason County 3055 165 253 
 
 Terlinquaite, Brewster County. . . .3022 163 250 
 
 Thobogumite, Llano County 3043 164 252 
 
 Uraninite, Llano County 3044-3045 164 252 
 
 Wolframite, Culberson County. . . .3039-3040 164 251 
 
 Yttbialite, Llano County 3053-3054 165 252 
 
 METEORIC IRON 3133-3143 166-167 256 
 
 BAT GUANO 3142-3147 167 255 
 
 WOODS 3148-3156 167-168 z55 
 
KEY FOR USE OF THIS PUBLICATION. 
 
 The table of Contents gives the general headings under which 
 the analyzed materials are classified, together with the numbers 
 under which the samples and their analyses are recorded and 
 the numbers of the pages in Part 1 and Part 2 respectively on 
 which the data for these analyses appear. 
 
 Part 1 states the sources etc. of the samples, arranged in 
 alphabetical order of the counties in which they were obtained. 
 Each topic in Part 1 opens with a statement of general infor- 
 mation on such matters as the occurrence of the analyzed ma- 
 terial in Texas, — ^the relation between the composition of the 
 material and its economic value, — etc. 
 
 Part 2 gives the analyses proper in the order of the analysis 
 numbers. 
 
 To find the analysis of any particular material from any 
 particular county in Texas, — 
 
 First, look through the Table of Contents for the heading 
 under which the material is given; and note the corresponding 
 page number in Part 1 (for later use, note also the corre- 
 sponding page number in Part 2) ; 
 
 Second, turn to this page in Part 1, and by following the 
 counties in their alphabetical order, find the county desired, and 
 note the different parts of the county from which samples were 
 obtained ; 
 
 Third, after selecting a particular analysis, note its number 
 and turn to Part 2 for the same number to secure the analysis 
 proper (the approximate page number for this last reference 
 was obtained before from the Table of Contents.) 
 
INTRODUCTION. 
 
 Origin and Purpose op this Publication. — The value of a 
 natural product depends largely upon its chemical composition, 
 and since chemical analyses of natural products found in Texas 
 are irregularly scattered throughout the literature and prac- 
 tically inaccessible, even to people who are interested in them, 
 it was suggested by Dr. J. A. Udden, Director of the Bureau 
 of Economic Geology and Technology of the University of 
 Texas, that we collect and publish all the reliable analyses of 
 Texas natural products which have appeared in print or are 
 otherwise accessible. 
 
 Much of the collecting and tabulating of the material was 
 done by T. P. Buehrer (M. A., Texas, 1918), N. H. Moore (M. 
 A., Texas, 1916), and T. W. Kay (M. A., Texas, 1917). Some 
 of the proof reading was done by J. E. Stullken (B. A., Texas, 
 1911). Dr. J. A. Udden has contributed a number of notes and 
 has made many helpful suggestions. Appreciation of the 
 writer 's indebtedness to these co-workers is gratefully expressed 
 here. 
 
 Arrangement of Material. — The arrangement of the ma- 
 terial in this publication is given in the Table of Contents. The 
 following remarks are mainly for the purpose of explaining the 
 arrangement adopted. 
 
 The number of different substances considered in this publi- 
 cation is not large; hence it did not appear to be necessary to 
 arrange the substances in any particular or systematic order. 
 They are easily found by consulting the Table of Contents. For 
 the reader's convenience, there appears at the top of each page, 
 the name of the sort of material presented by the data on that 
 page. 
 
 It appeared to be desirable to sub-divide each kind of material 
 according to its occurrence in diiferent geological formations, 
 but it was not found practicable to do this except with lime- 
 stone, coal, iron ore, and petroleum ; hence other materials have 
 not been sub-divided in this manner. 
 
 The different individual specimens of any one sort of mate- 
 
Chemical Analyses of T-exas Rocks aiid Min&i'als 3 
 
 rial of which analyses are given are listed in Part 1 in the al- 
 phabetical order of the counties in which the analyzed samples 
 were collected. 
 
 The descriptive data for each analyzed sample presents: 
 
 (1) The analysis num'ber; 
 
 {2)_ The county in which the sample was collected; 
 
 (3) A brief descriptive statement of the nature of the 
 
 material ; 
 
 (4) The locality from which sample was obtained; 
 
 (5) A statement describing in what geological formation, or 
 
 in what mineralogical, or physical form the material 
 occurs at is source; 
 
 (6) Name or initials of sampler (when known) — for names 
 
 corresponding to initials, see List of Contributors of 
 Analyses ; 
 
 (7) Initials of analysts — for corresponding names, see List 
 
 of Contributors of Analyses; 
 
 (8) Reference to source from which the analysis was obtained 
 — see page for list of abbreviations used in these 
 
 references ; 
 
 SOURCES, SELECTION AND TABULATION OF 
 ANALYTICAL DATA. 
 
 The sources of the data, as may be inferred from the accom- 
 panying List of Sources of Analyses, are exceedingly numerous, 
 and the advisability of republishing all the available material 
 accumulated from these sources was considered to be question- 
 able. Hence, a very careful selection was made, and only such 
 analyses were used as were considered dependable and repre- 
 sentative of the particular substances upon which the analyses 
 were made. Analyses lacking in information concerning the 
 localities of the sources of the materials have not been used. 
 Many analyses were taken from the office files of the former 
 University of Texas Mineral Survey, and from the present Uni- 
 versity of Texas Bureau of Economic Geology and Technology. 
 Naturally, such analyses appear here in print for the first time. 
 
 All analyses accessible to the author up to September 1, 1918, 
 have been considered in this publication. It is our intention 
 
4 University of Texas Bulletin 
 
 to keep this record up to date by publishing supplements giving 
 the analyses made after this date. Analyses of a few specially 
 important substances made in the Spring of 1919 have been 
 added while proof was being read. 
 
 A few special points should be mentioned. Sanitary water 
 analyses have been omitted because the sources of contamination 
 are not constant, as a rule. Of ores, only a few analyses char- 
 acteristic of well established sources or mines were included. 
 Soil analyses have been omitted because soils are important only 
 for agricultural purposes, and a chemical analysis of the mineral 
 portion of a soil is of very little help in determining the agricul- 
 tural value of the soil. Petroleum analyses were omitted be- 
 cause most of the available analyses are incomplete and out of 
 date at present. 
 
 In order to be able to collect into a single table all the analyses 
 of one kind of a substance, it was necessary to adjust the reports 
 of different analysts to a common form. The forms used here 
 are essentially the same as those used in the U. S. Geological 
 Survey publications. Extensive re-arranging and re-calculating 
 was particularly necessary in the case of water analyses, in 
 order that these might be tabulated as simply and as accurately 
 as possible. The tables of water analyses present (1) the total 
 amounts of each ion — due to all of the dissolved salts together — 
 (2) the oxides which are present in colloidal solution, such as 
 silica (SiOj), iron oxide (FcjOg) and alumina (Al^Oj), 
 and (3) the suspended matter. The plain figures give the 
 amount of each substance in parts per million, while a second 
 set of figures below the plain figures, and enclosed in paren- 
 theses, gives the number of gram equivalents of each separate 
 salt constituent (or number of corresponding univalent 
 
 gram ions) per thousand liters. On page ^just ahead of the 
 
 tables of water analyses, appear the directions for calculating 
 the total amount of any one salt present in the water, and also 
 the factors for converting the figures from parts per million to 
 •ther units, such as grains per gallon, pounds per thousand 
 gallons, etc. 
 
 The tabulation of the analytical data of waters here employed 
 is preferable to any other because it expresses the analytical 
 
Chemical Analyses of Texas Bocks and 3Iine'rals 5 
 
 results directly — that is, without their having been subjected to 
 unnecessary or arbitrary recalculations, such as would be in- 
 volved in reporting the amounts of some salts which might be 
 formed from these ions. Such hypothetical combinations are mis- 
 leading because in these waters the salts are present wholly as 
 separate ions, and different chemists would assume different 
 combinatipns to be formed. The scheme employed here makes 
 it easy for anyone to figure out the amount of any one salt that 
 might be formed, or obtained, from a particular water. 
 
 ABBREVIATIONS FOR SOURCES OF ANALSYES. 
 
 U. T. B.=University of Texas Bulletin (Ofacial Series). 
 
 U. T. M. S. B.=University of Texas Mineral Survey Bulletin. 
 
 T. M. S. A. N.^Texas Mineral Survey Analyses No. taken from 
 the office files of the University of Texas Mineral Survey. 
 
 T. A. B. S. A. R.:^Texas Agricultural Experiment Station 
 Annual Report. 
 
 T. G. S. A. R.=Texas Geological Survey Annual Report. 
 
 T. G. S. A. =Texas Geological Survey Analysis taken from the 
 ofSce files of the Texas Geological Survey. 
 
 B. A.=Bureau Analysis : — Analyses taken from the ofiice files of 
 the University of Texas Bureau of Economic Geology. Those 
 in which in the numbers are preceded by capital "C" are 
 from the files of the new Division of Chemistry of the 
 Bm-eau ; e.g., B. A., C135. 
 
 T. A. S.^Texas Academy of Science (Proceedings). 
 
 U. S. G. S. W. S.=United States Geological Survey Water Sup- 
 ply Paper. 
 
 U. S. G. S. A. R=United States Geological Survey Annual 
 Report. 
 
 U. S. G. S. B=United States Geological Survey Bulletin. 
 
 LIST OF SOURCES OF THE ANALYSES IN 
 THIS BULLETIN. 
 
 1. Files of original papers of the University of Texas Min- 
 eral Survey, now in possession of the University Chem- 
 ical Laboratory. 
 
 2. Piles of original papers of the University of Texas, Bu- 
 
University of Texas Bulletin 
 
 reau of Economic Geology and Technology, now in 
 possession of the University Division of Chemistry; 
 
 3. Transactions of the Texas Academy of Science : I, II, III, 
 IV. 
 
 4. U. S. G. S. Bulletins: 
 
 No. 164. Reconnaissance in the Rio Grande Coal Fields of 
 
 Texas, by T. W. Vaughan, including a jReport on 
 
 Igneous Rocks from the San Carlos Coal Fields, 
 
 by E. C. E. Lord, 1900, 100 pp., 11 pis. 
 No. 178. The El Paso Tin Deposits, by W. H. Weed, 1901. 
 
 15 pp., 1 pi. 
 No. 212. Oil Fields of the Texas and Louisiana Gulf Coastal 
 
 Plain. 
 No. 213. Contributions to Economic Geology, 1902; S. F. 
 
 Emmons and C. W. Hayes, Geologists in Charge. 
 
 1903, 449 pp. 
 No. 220. Mineral Analyses from Laboratories of U. S. G. S., 
 
 1880-1903, by F. W. Clarke. 
 No. 243. Cement Materials and Industry of the United 
 
 States, by Ed. C. Eckel. 
 No. 260. The Iron Ores of Northeastern Texas, by E. C. 
 
 Eckel. 
 Salt, Gypsum, and Petroleum in Trans-Pecos Texas, 
 
 by G. B. Richardson. 
 No. 262. Contributions to Mineralogy from the U. S. G. S. : 
 
 Mineralogical Notes, by W. T. Shaller. 
 No. 340. Portland Cement Materials Near El Paso, Texas, 
 
 by G. B. Richardson. 
 No. 405. The Mercury Minerals from Terlingua, Texas, by 
 
 Hildebrand and Shaller. 
 No. 429. Oil and Gas in Louisiana, with a Brief Summary 
 
 of Their Occurrence in Adjacent States, by G. D.. 
 
 Harris. 
 No. 430. Contributions to Economic Geology: Preliminary 
 
 Report on the Iron Ores from Llano County, 
 
 Texas, by Sidney Paige. 
 Structural Materials Available in the Vicinity of 
 
 Austin, Texas, by E. F. Burchard. 
 No. 470. Notes on Some Clays from Texas, by Alex Deussen. 
 No. 419. Analyses of Rocks and Minerals from the Lab. of 
 
 the U. S. G. S., 1880-1908, by F. W. Clarke. 
 No. 450. Mineral Resources of the Llano-Burnet Region, 
 
 Texas, with an account of the Pre-Cambriaa 
 
 Geology, by Sidney Paige, 1911. 
 
Chemical Analyses of T^xas Bocks and Minerals 7 
 
 No. 522. Portland Cement Resources in Texas (State at 
 
 Large), by J. A. Taff. 
 No. 591. Analyses of Rocks and Minerals, 1880-1914, by 
 
 F. W. Clarke. 
 No. 616. The Data of Geochemistry, 3rd Ed., by F. W. 
 
 Clarke. 
 
 5. U. S. G. S. Water Supply Papers: 
 
 No. 141. Observations on the Ground Waters of the Rio 
 Grande Valley, by Chas. S. Slichter. 
 
 No. 190. The Underground Waters of the Coastal Plain of 
 Texas, by Thos. U. Taylor. 
 
 No. 191. The Geology and Water Resources of the Western 
 Portion of the Panhandle of Texas, by Charles N. 
 Gould. 
 
 No. 2 76. The Geology and Water Resources of Northeastern 
 Texas, by C. H. Gordon. 
 
 No. 274. Some Stream Waters of Western United States, b|y 
 Herman Stabler. 
 
 No. 23 6. The Quality of Surface Waters in the United 
 States, Part I; Analyses of Waters Bast of the 
 One Hundredth Meridian, by R. B. Dole. 
 
 No. 317. The Geology and Underground Waters of the Wich- 
 ita Region, North Central Texas,. by C. H. Gordon. 
 
 No. 335. The Geology and Underground Waters of the South- 
 eastern Part of the Texas Coastal Plain, by Alex. 
 Deussen. 
 
 No. 375. Contributions to the Hydrology of the United 
 States: Ground Water in LaSalle and McMullen 
 Counties, 1915, by Alex. Deussen and R. B. Dole. 
 
 No. 3 64. Water Analyses from the Lab. of the U. S. G. S., 
 tabulated 1914, by F. W. Clarke. 
 
 No. S6. Operations at River Stations, 1901, Part II, West 
 of the Mississippi River. 
 
 6. U. S. G. S. Reports : 
 
 No. 18. Part II, Geology of the Edwards Plateau and Rio 
 Grande Plain, Adjacent to Austin and San An- 
 tonio, Texas, with Reference to the Occurrence of 
 Underground Waters, by R. T. Hill and T. W. 
 Vaughan. 
 
 No. 21. Part VII, The Geography and Geology of the Black 
 and Grand Prairies of Texas, by Robert T. Hill. 
 
 No. 22. Part I, The Asphalt and Bituminous Rock Deposit of 
 the United States. 
 
 No. 22. Part III, The Southwestern Coal Field, by J. A. 
 Taff. 
 
University of Texas Bulletin 
 
 Texas Geological Survey: 
 First Annual Report, 1889. 
 
 a. Preliminary Report on the Geology of the Gulf Tertiary 
 
 of Texas, by R. A. P. Penrose. 
 
 b. A Brief Description of the Cretaceous Rocks of Texas 
 
 and Their Economic Uses, by Robert T. Hill, 
 'c. The Southern Border of the Central Coal Field, by 
 W. P. Cummins. 
 
 d. The Permian of Texas and Its Overlying Beds, by W. F. 
 
 Cummins. 
 
 e. A Preliminary Report on the Coal Fields of the Colo- 
 
 rado River, by R. S. Tarr. 
 
 f. Geology of Trans-Pecos Texas: Preliminarjy Statement, 
 
 by W. Von Streeruwitz. 
 
 g. A Preliminary Report on the Central Mineral Region 
 
 of Texas, by T. B. Comstock. 
 Second Annual Report, 1890: 
 
 a. Reports on th« Iron Ore District of East Texas, by B. T. 
 
 Dumble, J. B. Walker, William Kennedy, etc. 
 
 b. Report on the Geology of Northwestern Texas, by 
 
 W. F. Cummins. 
 
 c. Geology and Mineral Resources of the Central Mineral 
 
 Region of Texas, b^y T. B. Comstock. 
 
 d. Report on the Geology and the Mineral Resources of 
 
 Trans-Pecos Texas, by W. H. von Streeruwitz. 
 Third Annual Report, 1891. 
 
 a. Geology of Houston County, by W. Kennedy. 
 
 b. Geology of Section from Terrell to Sabine Pass, by 
 
 W. Kennedy. 
 
 c. Geology of Llano Estacado or Staked Plains, by W. 
 
 P. Cummings. 
 
 d. Notes on the Geology of the Country west of the 
 
 Plains. 
 
 e. Stratigraphy of the Triassic P'ormation in Northwest 
 
 Texas, by N. F. Drake. 
 f; Report on the Paleontology of the Vertebrata, by E. 
 
 D. Cope, 
 g. Reports on the Cretaceous Area North of the Colorado 
 
 River, by J. A. Taft. 
 h. Geology of Trans-Pecos Texas, by W. H. Streeruwitz. 
 Fourth Annual Report, 1892. 
 
 a. Report on the Geology of Grimes, Brazos, and 
 
 Robertson Counties, by W. Kennedy. 
 
 b. Preliminary Report on the Artesian Wells of the 
 
 Gulf Coastal Slope, by J. A. Singley. 
 
Chemical Analyses of Texas Bocks and Mineirals 9 
 
 e. Preliminary Report on the Organic Remains Obtained 
 froiji the Deep Woll at Galveston, Together with 
 C oiic'.usions Respectiiif; the Age c/t the Various 
 Formations Penetrated, by Gilbert D. Harris. 
 
 d. Report on the Geology of Rocks of Trans-Pecos Texas, 
 
 by A. Osann. 
 
 e. Geology of Trans-Pecos Texas, by W. H. Streeruwitz. 
 
 f. Notes on the Geology of Northwest Texas, by W. F. 
 
 Cummins. 
 
 g. Report on the Cretaceous Area North of the Colorado 
 
 River, by J. A. Taff. 
 h. Report on the Colorado Coal Field of Texas, by N. F. 
 
 Drake, 
 i. A preliminary Report on the Vertebrate Paleontology 
 
 of the Lilano Estacado, by E. D. Cope, 
 j. A Contribution to the Invertebrate Paleontology of 
 
 the Texas Cretaceous, by F. W. Cragin. 
 k. Contributions to the Natural History of Texas, by J. 
 
 A. Singley. 
 
 1. Carboniferous Cephalopods, Second Paper, by 
 Alpheus Hytatt. 
 
 University of Texas Mineral Survey Bulletins: 
 No. 1. Texas Petroleum, by W. B. Phillips. 
 No. 2. Sulphur, Oil, and Quicksilver in Trans-Pecos Texas, 
 
 by W. B. Phillips. 
 No. 3. Coal, Lignite, and Asphalt Rocks, by W. B. Phillips, 
 
 B. F. Hill, and H. W. Harper. 
 
 No. 4. The Terllngua Quicksilver Deposits, Brewster County, 
 by B. F. Hill. 
 
 No. 5. The Minerals and Mineral Localities of Texas, by 
 F. W. Simonds. 
 
 No. 7. Report of Progress for the Year Ending December 
 31, 1903, by W. B. Phillips. 
 
 No. 8. The Geology of the Shafter Silver Mine District, Pre- 
 sidio County, Texas, by J. A. Udden. 
 
 No. 9. Report of a Reconnaissance in Trans-Pecos Texas, 
 North of the Texas & Pacific Railway, by George 
 Burr Richardson. 
 
 University of Texas Bulletins (Scientific Series) : 
 No. 4. Contributions from the Chemical Laboratory of the 
 
 University of Texas, by Edgar Bverhart. 
 No. 17. Potash In the Texas Permian, 1915, by J. A. Udden. 
 No. 57. Geology and Underground Waters of the Northern 
 
 Llano Estacado. 
 No. 93. A Sketch of 'the Geology of the Chisos Country, 
 
 Brewster County, 1907, by J. A. Udden. 
 
No. 
 
 102. 
 
 No. 
 
 189. 
 
 No. 
 
 246. 
 
 No. 
 
 307. 
 
 No. 
 
 365. 
 
 No. 
 
 363. 
 
 U. 
 
 S. G, 
 
 No. 
 
 64. 
 
 No. 
 
 194. 
 
 No. 
 
 183. 
 
 No. 
 
 166. 
 
 10 University of Texas Bulletin 
 
 The Clays of Texas, by Heinrich Ries. 
 
 The Composition of Texas Coals and Lignites, by 
 
 W. B. Phillips, S. H. Worrell, and D. M. Phillips. 
 A Reconnaissance Report on the Geology of the Oil 
 
 and Gas Fields of Wichita and Clay Counties, 
 
 Texas, 1912, by J. A. Udden and D. M. Phillips. 
 The Fuels Used in Texas, by W. B. Phillips and 
 
 S. H. Worrell, 1918. 
 The Mineral Resources of Texas, by W. B. Phillips, 
 
 1914. 
 The Deep Boring at Spur, by J. A. Udden. 
 
 10. U. S. G. S. Folios: 
 Description of Uvalde Quadrangle, by C. D. Wal- 
 
 cott, 1900. 
 
 Description of Van Horn Quadrangle, bpr G. B. 
 Richardson, 1914. 
 
 Description of the Llano and Burnet Quadrangles, 
 by Sidney Paige, 1912. 
 
 Description of the El Paso District, by G. B. Rich- 
 ardson, 1909. 
 
 11. Journal of the American Chemical Society: 
 Vol. XXII. 1900, pp. 553-556. Hydrocarbons in Heavy Texas 
 
 Petroleum. 
 
 Vol. XXIII, 1901, pp. 264-267. Composition of Texas Pe- 
 troleum. 
 
 Vol. XXIX, 1903, p. 1190. The Mercury Minerals of Ter- 
 lingua, Texas. 
 
 12. Economic Geology: 
 Vol. I, 1905-06. The Terlingua Quicksilver Deposits, by H. 
 
 W. Turner. ' 
 
 Vol. X, 1915. Copper Deposits in the Red-Beds of Texas, by 
 Louis M. Richards. 
 
 13. Texas Agricultural Experiment Station: 
 
 a. Reports: Second Annual Report, Soils and Waters of Rio 
 Grande Valley, pp. 93-98, H. H. Harrington, 1889. 
 
 b. Bulletins: No. 130, Alkali Soils and Irrigation Waters, 
 by G. S. Fraps, 1910. 
 
 14. Miscellaneous Sources: 
 Pilot Knob: A Marine Cretaceous Volcano, by Robert T. Hill, 
 
 1890. 
 The Production of Petroleum in 1899, by F. H. Oliphant, 
 
 1900. 
 Graphite. Mln. Res. 1913, Part II, p. 230. 
 Meteorite. The American Journal of Science No. 212, August, 
 
 1888, p. 113. 
 
Chemical Analyses of Texas Bocks and Minerals 11 
 
 LIST OP ANALYSTS (KEY TO INITIALS OF NAJfflES.) 
 
 On the following pages will be found brief notes concerning 
 the chemists who have contributed the Analyses in this Bulletin. 
 These data are intended not only to invite the confidence of 
 the reader, but to pay a tribute to the Analysts who by untiring 
 efforts and careful, consistent work have made this contribution 
 to Science and Industry. 
 
 After each name appears the present address of the Scientist, 
 his highest academic degree with year and institution in which i t 
 was conferred, and the main public position he has held. It was 
 deemed unnecessary to give biographical data when the con- 
 tj"ibutors have made only a few analyses, and are not regular 
 scientific workers. 
 
 Adriance, John Sabin, Union League Club, New York, Pro- 
 fessor, Chem. and Toxicol, N. Y. Homeop, Med. Coll., 1897. 
 
 Bailey, Dr. James Bohinson, University of Texas. — Ph. D., 
 Munich, 1897; Professor of Organic Chemistry, The University 
 of Texas, 1900—. 
 
 Baker, C. L., Geologist, University of Texas. Bureau of Eco- 
 nomic Geology till 1918. 
 
 Barr, W. U. 
 
 Bates, P. E. 
 
 Brackett, Br. Q. M., Clemson College, S. C, Assoc. Prof. Chem. 
 Clemson College, to 1891. 
 
 Bredlich, Dr. W. 
 
 Chandler, Charles Frederick, Chemist, 51 E. 54 St., New York, 
 Professor. of Chemistry, Columbia, 1877 — . 
 
 Church, W. D. 
 
 Clarke, Prof. Frank, Wigglesworth, "Washington, D. C, Har- 
 vard U., B. S., 1867— Chemist, U. S. Geol. Survey. 
 
 Collins, W. D. 
 
 Deussen, Alexander, Geologist, Houston, Texas, B. S., Texas, 
 1903 and M. S., 1904. Instr. 1905-1916. Junior Geologist, U. 
 S. Geol. Surv., 1907. 
 
 Dole, B. B., U. S. Geol. Surv. Washington, D. C, A. B., Bow- 
 doin, 1902 ; Mass. Inst. Tech. 1903. With Geol. Surv. since 1903. 
 
12 University of Texas Bulletin 
 
 Bumble, Edwin Theodore, Geologist ; 2003 Main St., Houston, 
 Texas, State Geologist of Texas, 1887-96. . 
 
 Eakins, L. B. 
 
 Everhardt, Dr. Edgar, 150 N. Jackson St., Atlanta, Ga., PI1.D., 
 University of Freiburg, 1878. Prof. Chemistry, University of 
 Texas, 1884-94. 
 
 Felsing, W. A., Boston, Mass., M. A., University of Texas, Ph. 
 D., Inst, of Tech., Boston. Associate Professor of Chemistry, 
 University of Texas, 1919. 
 
 Fireman, Peter. Cosmos Club, Washington, D. C, Chemist. 
 Ph. L., Bern, 1893. Chemist, U. S. Nat. Museum, 1901-06. 
 
 Fraps, George Stronach, Agricultural Chemist, College Sta- 
 tion, Texas; Johns Hopkins, Ph. D., 1899; State Chemist of 
 Texas, 1905—. 
 
 GentJi, F. E. 
 
 Glasscock, B. L., Maryville, Tenn., Ph. D., University of Penn., 
 1907. Manager of Maryville Plant of Aluminum Company oi 
 America, 1910 — . 
 
 Goss, Arthur, Chemist, Lafayette, Ind., M. S., Purdue U., Dir. 
 Ind. Agricultural Expt. Sta. since 1903. 
 
 Harper, Dr. H. Winston, Austin, M. D., University of Vir- 
 ginia, 1892. Professor of Chemistry, The University of Texas, 
 1894^. 
 
 Harrington, H. H., Prof, of Chem. and later Pres. of Agri- 
 cultural and Mechanical College of Texas ; Industrial Agent for 
 St. Louis Brownsville and Mex. ER. 
 
 Heileman, W. H. 
 
 Herndon, J. H. 
 
 Hidden, William Earl, 115 Central Ave., Ocean Grove, N. J., 
 Mineralogist, Providence, New York and Washington. 
 
 HUlehrand, Prof. William Francis, Washington, D. C, Hei- 
 delberg, Ph. D., 1875, Chemist, U. S. Bureau of Standards. 
 
 Jones, D. P. 
 
 Mackintosh, J. B. 
 
 Mallet, Dr. John Willianu, Ph. D. Goettingen, 1852 ; Professor 
 of Chemistry, University of Virginia, 1868-1912. 
 
 McAfee, A. M., Port Arthur, Tex. Ph.D., Columbia Univ., 1911. 
 Chemist, Magnolia Petroleum Company.- 
 
Chemical Analyses of Ttexas Bocks and Minerals 13 
 
 Maury, Babney Eerndon, Consulting Engineer, Monadnock 
 Blk., Chicago. M. E., Stevens Inst. Tech., 1884. 
 
 Melville, W. H. 
 
 Mew, W. M. 
 
 Mikeska, Louis Alois, New Haven, Conn. Ph. D., Yale, 1917. 
 Instr. Yale University, 1917 — . 
 
 Noyes William Albert, Chemist, Urbana, 111. Ph. D., Johns 
 Hopkins, 1882. Prof. Chemistry and Dir. Chem. Lb., U. of 111., 
 1907—. 
 
 P(Am, 0. H., El Paso, Texas, B. S., University of Texas, 
 1900. Chemist, University of Texas Mineral Survey, 1901-1904. 
 
 Palmer, Chase, Chemist, Hammond Court, "Washington, D. C. 
 Ph.D., Johns Hopkins, 1882 ; U. S. Geol. Survey, Chemist, 1907— 
 
 Parkinson, G. A., Assistant Testing Engineer, Eoad Materials 
 Laboratory, The University of Texas, 1914 — . 
 
 Phillips, Dr. William B., Mining Engineer,. Director U. of 
 Tex. Mineral Survey, 1901-05. Bur. Econ. Geol. and Tech., U. 
 of Texas, 1909-14. 
 
 Phillips, Drury McNeil, Mining Engineer, Alba, Texas. 
 
 Phillips, A. J. 
 
 Porch, E. L. Jr., B. S., E. M., Michigan School of Mines, 
 1911. Assistant Greologist, Bur. of Econ. Geol. and Tech., Uni- 
 versity of Texas, 1914-17. 
 
 Powers, W. A. 
 
 Bead, WiUiam Thornton, University of Texas, Austin, Texas. 
 M. A., U. of T., 1915. Chemist, Division of Chemistry, 
 Bur. of Econ. Geol. and Tech., University of Texas, Austin, 
 Texas, 1916-1918. 
 
 Bidden, D. F. 
 
 Bies, Reinrich, Geologist, 401 Thurston Ave., Ithaca, N. Y., 
 Ph. D., Columbia, 1896. Prof, of Economic Geology, Cornell 
 University, 1905 — . 
 
 Bolerts, Milnor, Mining Engr., 4504 15th St., N.,E. Seattle, 
 Wash. A. B., Leland Stanford, Jr., U., 1899, Prof. Mining 
 Engr'g. and Metallurgy and Dean, Coll. Mines, U. of "Wash., 
 1901—. 
 
 Boberts, John B., Geologist, The Texas Company, Houston, 
 Texas. 
 
 Bussell, C. P. 
 
14 University of T^xas Bulletin 
 
 Russell, W. M., Fort Worth, Tex. 
 
 Schaller, Waldemar Theodore, Mineralogist, U. S. Geological 
 Survey, Washington, D. C., Ph. D., Munich, 1912; Chemist and 
 Mineralogist, U. S. Geol. Survey, Oct. 1, 1903—. 
 
 Shannon, C. W., Dir. Okla. Geol. Survey. 
 
 Sharpless, 8. P. 
 
 Schoch, Dr. Eugene Paul, Austin, Ph. D. Chicago Univer- 
 sity, 1902. Prof, of Physical Chemistry, The University of 
 Texas, 1905—. 
 
 Seynes, O. H. 
 
 Siebel, J. E., 1424 Montana St., Chicago, 111. Ph. D., Berlin, 
 1865; Director Zymoteeh Inst., Chicago, 1880. 
 
 Skeats, 
 
 Smith, Dr. Eugene Alle^i, University of Alabama, Tuscaloosa, 
 Ala. Ph. D., Heidelberg, 1868. Prof, of Mineralogy and Geol- 
 ogy, Ala., 1871—. 
 
 Stabler, Herman, Civil Engr., Bradley Hills, Bethseda, Md., 
 
 B. S., Earlham Coll., 1899. Hydraulic and Sanitary Engr. with 
 the U. S. Geol. Survey and U. S. Reclamation Service since 1904. 
 
 Stokes, Henry Newlin, Chemist, 1207 Q. St., Washington, D. 
 
 C. Retired from chemical work in 1909. Ph. D., Johns Hopkins, 
 1884. Chemist, U. S. Geol. Survey, 1889-92 and 1894-1903. 
 
 Stiollken, John Edward, Austin, B. A., University of Texas, 
 1911, Chemist, Bureau Econ. Geol. and Tech. University of 
 Texas, 1913—. 
 
 Tilson, P. S., Assist. Prof, of Chem., A. and M. College ; Owner 
 of Houston Chemical Labs., Houston, Texas. 
 
 Tolleman, H. A. 
 
 Tucker, L. B.' 
 
 Voelker, R. 
 
 Van Winkle, Walton. 
 
 Wesson, David, 11 S. Mt. Ave., Montclair, N. J., B. S., Inst. 
 Tech., 1883. Head Chem., Am. Cotton Oil Co., 1890-95. 
 
 Whitfield, James Edward, Chemist, 406 Locust St., Philadel- 
 phia. Ph. G., Nat. Coll. Pharmacy, Washington, 1880; Student 
 4 yrs at Rensslaer Poly. Inst., but with U. S. Geol. Survey, 
 1880-8. 
 
 Worrell, S. H., B. S., University of Texas, 1901. Chemist on 
 Bureau Eco. Geol., 1910-14. Dean of Texas School of Mines at 
 El Paso since 1914. 
 
Chemical Analyses of Texas Bocks and Minerals 15 
 
 PAUT I. 
 
 Sources of Samples, Names of Analysts, and other Related 
 Descriptive Data. 
 
 ROCKS— A. SEDIMENTARY 
 
 I. SAND AND SANDSTONE 
 
 Note on Composition of Sand Used Industrially. — 
 In its most general sense, sand is a material composed 
 of fairly coarse grains of mineral matter resulting from 
 the trituration or mechanical wear of any kind of a rock, and 
 hence, it may have any kind of a composition ranging from lime- 
 stone to silica. For agricultural purposes, the chemical nature 
 of the sand is of no consequence, and hence, any coarse grain, 
 loose, earthy material may be so designated. In most cases, 
 however, this coarse-grained material is of such chemical com- 
 position as to give it the hardness necessary to prevent finer di- 
 vision, and hence, sand is generally siliceous, or even pure silica, 
 since siliceous rocks and quartz (i. e., silica) are the most 
 abundant rock materials of the earth's crust, and by their hard- 
 ness and chemical stability are enabled to survive after the as- 
 sociated materials have disappeared. 
 
 Sand used for window glass must be practically pure silica, 
 and must contain less than one-half per cent, of iron oxide; 
 sand used for crystal and plate glass must contain less than 
 0.01 per cent ; and sand for optical glass must contain less than 
 0.001 per cent of iron oxide. Bottle glass may contain as much 
 as two per cent of iron oxide. 
 
 Sand used for building purposes should have grains with 
 sharp edges, and it must be clean. Very finely divided sand 
 with rounded particles may be used for scouring and polishing 
 materials. Sand used for foundry moulds should contain about 
 six per cent, of clay matter as a binder. 
 
 Analyses of sands have been made in most instances for 
 determining the suitability of the material for glass. Our purest 
 siliceous sands seem to be sands of fine texture occurring in 
 the base of the Comanchean. Some Pennsylvanian sands, which 
 
16 University of Texas Bulletin 
 
 appear to have been leached by underground waters, also con- 
 sist of quite pure siliceous material. Some pure siliceous sands 
 occur in the dunes in the southern part of the Llano Estacado 
 and on the gulf coast in the southern part of the state. Siome 
 Tertiary sands may be suitable for the same purpose, but in most 
 instances these contain considerable ferruginous material which 
 makes them suitable only for bottle glass. 
 
 Many of the samples of sand and sandstone have been tested 
 by the Eoad Materials Laboratory of the University of Texas and 
 the results recorded under the same "B. A." numbers as those 
 given below. Such physical tests may include the determination 
 of the compressive strength of stones, their hardness, toughness, 
 resistance to abrasion, specific gravity, weight per cubic foot, 
 quantity of water required to saturate, the value of sand for 
 making cement, mortar, mechanical analysis of sand and gravel, 
 value of gravel and crushed stone for making concrete, etc. 
 Samples which have been tested are designated below. 
 
 Anal. No. 
 
 1. Atascosa County. Sandstone conglomerate, obtained on 
 
 Crystal City Division of the S. A. U. & G. Ry., about 2 
 miles N. W. of New Pleasanton. Exposure light. Sam- 
 pled by G. A. P. Analyzed 1915 by J. E. S. B. A. 2308.- 
 
 2. Austin County. Sand from sand mound at Sealy. Sam- 
 
 ple sent to Laboratory of Univ. of Texas by F. C. Schaff- 
 ner. Analyzed 1915 by J. E. S. B. A. 3055. Physical 
 tests obtainable from University Road Materials Lab- 
 oratory. (See note above under "Standard Sandstone.") 
 
 3. Bell County. Concrete sand, received from Quality Stone 
 
 and Gravel Co., Temple, Texas. Analyzed 1915 by J. B. 
 S. B. A. 2792. Physical tests obtainable from University 
 Road Materials Laboratory: See note above. 
 
 4. Brewster County. Siliceous sandstone from Chisos Beds. 
 
 University Museum No. 1323. Marked "South of Oak 
 Canyon, west side of Chisos Mts." Analyzed 1914 by J. 
 B. S. B. A. 1672. 
 
 5. Burnet County. Sandstone from Woods' Quarry, at the end 
 
 of spur on A. & N. W. Ry., from Sandstone Spur. Sam- 
 pled by W. B. Phillips and G. A. P. Analy?ed 1914 by J. 
 E. S. B. A. 1797. Physical tests obtainable , from Uni- 
 versity Road Materials Laboratory: See note above. 
 
 6. Burnet County. Sandstone from Sandstone Spur. From 
 
 Woods' Quarry at end of spur on A. & N. W. Ry. Sam- 
 
Chemical Analyses of Tfixas Rocks and Minerals 17 
 
 pled by W. B. P. and G. A. P. Analyzed 1914 by J. E. 
 S. B. A. 1798. ■ 
 
 7. Burnet County. Gray sandstone from T. B. Woods' Quar- 
 
 ry, Fairland. Analyzed 1904 by O. H. P. T. M. S. A. 
 2870. Physical tests obtainable from University Road 
 Materials Laboratory: See note above. 
 
 8. Burnet County. Sandstone from Hoover's Point, about IVi 
 
 miles east of Colorado River bridge and directly on the 
 A. & N. W. Ry., embedded with limestone. Sampled by 
 W. B. P. and G. A. P. Analyzed 1914 by. J. E. S. B. A. 
 1799. Physical tests obtainable from University Road 
 Materials Laboratory: See note above. 
 
 9. Callahan County. Sandstone 2 miles west of Baird. Anal- 
 
 yzed by J. E. S. B. A. 1591. 
 
 10. Clay County. Sandstone from E. G. Rhoads, Newport, 
 
 Texas. Analyzed 1914 by J. B. S. B. A. 1509. 
 
 11. Coryell County. Sand received from D. R. Boone, Oglesby, 
 
 Texas, to be used In tests for the 'American Society of 
 Testing Materials. Analyzed 1915 by J. E. S. B. A. 
 2787. 
 
 12. Duval County. Sandstone from Sherman Concrete Co., No- 
 
 leda, Texas. Analyzed 1914 by J. B.* S. B. A. 1369. 
 
 13. Fayette County. Sandstone from near Lena Spur. Sent in 
 
 by J. C. Melcher, O'Quinn, Texas. Analyzed 1914 by J. 
 E. S. B. A. 1982. Physical tests obtainable from Uni- 
 versity Road Materials Laboratory: See note above. 
 
 14. Fayette County. Sample from same locality as No. 13. B. 
 
 A. 1981. Physical tests obtainable from University Road 
 Materials Laboratory: See note above. 
 
 15. Grayson County. Ferruginous sandstone from Wm. Veich, 
 
 Denison. Analyzed 1915 by J. E. S. B. A. 2360. 
 
 16. Jefferson County. Sandstone conglomerate from D. M. Pic- 
 
 ton, Beaumont. Analyzed 1914 by J. B. S. B. A. 1587. 
 
 17. Lampasas County. Sample of Sandstone from Charrick's 
 
 Hill on the Colorado River. Analyzed 1914 by J. E. S. 
 
 B. A. 1504. 
 
 18. Lavaca County. Sandstone from Moulton Sandstone Co., 
 
 Moultoa. Analyzed 1904 by O. H. P. T. M. S. A. No. 
 2872. Physical tests obtainable from University Road 
 Materials Laboratory: ' See note above. 
 
 19. Lavaca County. Sandstone from Moulton. Aanlyzed by J. 
 
 B. S. B. A. 1590. 
 
 20. Montague County. Cretaceous sandstone from Sampson 
 
 Ridge, Devil's Backbone, St. Jo. U. T. B. 365, p. 184. 
 
18 University of Texas Bulletin 
 
 21. Parker County. Glass sand. Sample received from W. K. 
 
 Gordon, Tliurber, Texas. Mfeirked "Prom Lambert, Par- 
 ker County." Analyzed 1915 by J. E. S. B. A. 2204. 
 
 22. Pecos County. Sand and gravel. Sample from W. O. 
 
 Washington, used locally for concrete, 25 miles north- 
 west of Ft. Stockton. Analyzed 1915 by J. E. S. B. A. 
 2318. Physical tests obtainable from University Road 
 Materials Laboratory: See note above. 
 
 23. Pecos County. Sand and gravel 5 miles north of Pt. Stock- 
 '. ton. Sample from W. O. Washimgton, marked "Wash 
 ; material from hills, used as sand for making concrete." 
 
 Analyzed 1915 by J. E. S. B. A. 2316. Physical tests 
 obtainable from University Road Materials Laboratory: 
 See note above. 
 
 24. Pecos County. Sand and gravel 15 miles north of Pt. 
 
 Stockton, near Grand Palls Road. Sample from W. O. 
 Washington, marked "Wash material from hills, used lo- 
 cally for making concrete." Analyzed 1915 by J. E. S. 
 B. A. 2317. Physical tests obtainable ' from University 
 Road Materials Laboratory: See note above. 
 
 25. Randall County. Sand from bed about % mile from Nor- 
 
 mal School at Canyon. Sample received from G. A. En- 
 dress. Analyzed 1914 by J. B. S. B. A. 1640. 
 2 6. Tarrant County. Sand from W. H. Beck, Pt. Worth, Texas, 
 to be tested for glass sand. Analyzed 1915 by J. E. S. 
 B. A. 2750. ' 
 
 27. Taylor County. Sandstone from Haynes' Quarry, % mile 
 
 N. W. of Buffalo Gap. Analyzed 1914 by J. E. S. B. A. 
 1588. 
 
 28. Taylor County. Sandstone from Haynes' Quarry, % mile 
 
 east of Buffalo Gap. Analyzed 1914 by J. E. S. B. A. 
 1589. 
 
 29. Tyler County, Sandstone submitted by D. M. Picton & 
 
 Co., Beaumont. Obtained from the Rockland Quarry, 
 ' Tyler. Analyzed 1914 by J. E. S. B. A. 1543. 
 
 30. Watd County. Sand from 5 miles north of Monahans. 
 
 Analyzed 1901 by O. H. P. T. M. S. A. 1217. 
 
 31. Ward County. Sandstone from Railroad well at Monahans. 
 
 T. M. S. A. 1233. Analyzed 1901 by O. H. P. 
 
 32. Ward County. Red sandstone from near Barstow. Sam- 
 
 ple from Pecos Sandstone Co. Analyzed 1904 by O. H. 
 P. T. M. S. A. 2871. Physical tests obtainable from 
 University Road Materials Laboratory: See note above. 
 
 33. Wood County. Sandstone (Quartzite) from John Reese 
 
 property, 1 mile south of Golden at negro cemetery on 
 line of M., K. & T. Ry. Sampled by G. A. P. Analyzed 
 
Chemical Analyses of Texas Eochs and Mmerals 19 
 
 1915 by J. E. S. B. A. 2571. Physical tests obtainable 
 from TJaiversity Road Materials Laboratory: See note 
 above. 
 
 n. GBEENSANDS 
 
 Note on Composition of Geeensands, and Theib, Occur- 
 ence IN Texas. — Greensand is composed of dark, olive-green 
 to yellowisK green grains, which are essentially grains of a 
 hydrous silicate of iron and potassium (Glauconite) — ^mixed 
 with more or less of pure silica grains. The grains are prob- 
 ably casts of the interiors of shells of Rhizopods. The silicd. is 
 supposed to come from siliceous secretions of a minute sponge 
 that grew in the cavities afterwards filled by the Glaconite. 
 Greensands high in potassium may be used as sources of potash. 
 Greensand occurs principally in three horizons in the rock's 
 of Texas. "There are extensive beds of greensand in the Cam- 
 brian formation in the Central Mineral Region. Where ex- 
 posed, these greensands have frequently been oxidized and con- 
 tain lenses of hematite ore. Greensands are extensively devel- 
 oped in the Upper Cretaceous, as in the upper part of the Taylor 
 marl and in the Navarro beds. They are rarely seen in the 
 Pennsylvania and Permian rocks. Scattered glauconitic grains 
 of greensand are found in the Ordovieian both in the. Central 
 Mineral Region and in the Marathon uplift. In the Wilcox 
 formation of the Eocene, glauconitic beds are frequent in the 
 . marine formations. Similar materials are found in the Cook 
 Mountain of the Claiborne group of the Eocene. 
 
 Anal. No. 
 
 34. Anderson County. Greensand (Eocene tertiary) from 
 
 property of the City of Palestine, located about 1 mile S. 
 W. of the City Hall on Dewey Hill. Heavy Exposure. 
 Sampled by G. A. P. Analyzed 1915 by J. E. S. B. A. 
 2660. Physical tests obtainable from University Road 
 Materials Laboratory: See note above under "Sand and 
 Sandstone." 
 
 35. Anderson County. Greensand (Eocene tertiary) from wells 
 
 in Palestine. T. G. S. A. R. I, p. 94. 
 
 36. Bexar County. Greensand (Upper Cretaceous). Seven 
 
 mil«s west of San Antonio. Sample received from Ray- 
 mond Phelps, San Antonio. Analyzed 1915 by J. E. S. 
 B. A. 2827. 
 
20 University of Texas Bulletin 
 
 37. Bexar County. Phosphatic greensand. (Upper Cretaceous). 
 
 From deposit on Leon Creek, about 1% miles south of 
 bridge on Castroville Road. Sampled by W. B. P. Anal- 
 yzed 1914 by J. E. S. B. A. 2004. 
 
 38. Bexar County. Same as No. 2004, except that it is natural 
 
 concentrate from the deposit. B. A. 2005. 
 
 39. Cass County. Greensand marl (Eocene tertiary). From 
 
 near Hughes Spring on A. E. Merchant's Headright. 
 Analyzed by J. H. H. 1890. T. G. S. A. R. II, p 94. 
 
 40. Cherokee County. Greensand (Eocene tertiary). From 
 
 Mount Selman. T. G. S. A. R. I, p. 94. 
 
 44. Cherokee County. Greensand from near Dialville. Anal- 
 
 yzed by L. E. M. T. G. S. A. R. II, p. 290 (1890). 
 
 45. Houston County. Greensand (Eocene tertiary). From K. 
 
 Jones' well on N. C. Hodges Headright. T. G. S. A. R. 
 Ill, p. 29. 
 
 46. Houston County. Greensand (Eocene . tertiary). From 
 
 Alabama Bluff on Trinity River. T. G. S. A. R. Ill, p. 29. 
 
 47. Houston County. Greensand (Eocene tertiary). Marked 
 
 "Greensand Clay," Hurricane Bayou. T. G. S. A. R. Ill, 
 p. 29. 
 
 48. Houston County. Greensand (Eocene tertiary). Prom L. 
 
 Williams Headright. T. G. S. A. R. Ill, p. 29. 
 
 49. Houston County. Greensand (Eocene tertiary). From 
 
 Murchison's Prairie. T. G. S. A. R. Ill, p. 29. 
 
 50. Houston County. Greensand (Eocene tertiary). From D. 
 
 McLeany's Headright. T. G. S. A. R. Ill, p. 29. 
 
 51. Houston County. Greensand (Eocene tertiary). From 
 
 Robbins' Well on Leonard Williams' Headright. T. G. S. 
 A. R. Ill, p. 29. 
 
 52. Houston Count|y. Greensand (Eocene tertiary). From 
 
 Hurricane Bayou. T. G. S. A. R. Ill, p. 2 9. 
 
 53. Leon County. Greensand from J. W. Barton, Oakwood, 
 
 Texas. Analyzed 1915 by J. E. S. B. A. 2717. 
 
 54. Leon County. Phosphatic greensand (Eocene tertiary) from 
 
 near Centerville. Sample received from R. W. Carroll, 
 Houston, Texas. Analyzed by J. E. S. B. A. 2106. 
 
 55. Llano County. Greensand (Cambrian) from south fork of 
 
 Morgan Creek. Analyzed by Chase Palmer. U. S. G. S. 
 Folio 183, p. 6. 
 
 56. Mariom County. Greensand marl (Eocene tertiary) in a 
 
 bluff overlooking Big Cypress in Jefferson. T. G. S. A. R. 
 II, p. 114 (1890). 
 
 57. Nacogdoches County. Greensand marl (Eocene tertiary).. 
 
 One-fourth mile S. E. of Nacogdoches. Analyzed by J. H. 
 H. T. G. S. A. R. II, p. 277. 
 
Chemical Analyses of Texas Bocks and Minerals 21 
 
 58. Nacogdoches County. Same as No. 57, but roasted. Anal- 
 
 yzed by J. H. H. T. G. S. A. R. 11, p. 277. 
 
 59. Nacogdoches County. Altered calcareous green&and marl 
 
 (Eocene tertiary). From Simpson's Hill, 4 miles N. W. 
 of Melrose. Analyzed by J. H. H. T. G. S. A. R. II, P- 
 277. 
 
 60. Nacogdoches County. Greensand marl, roasted sa:mple, 
 
 from Simpson's Hill, 4 miles west of Melrose. Analyzed 
 by J. H. H. T. G. S. A. R. II, p. 277. 
 
 61. Nacogdoches County. Indurated calcareous greensand marl, 
 
 2 inches in depth, from Simpson's Hill, 4 miles northwest 
 of Melrose. Analyzed by L. E. Magnenat. T. G. S. A. R. 
 II, p. 277. • 
 
 62. Nacogdoches County. Same as No. 61, but roasted. Anal- 
 
 yzed by J. H. Herndon. T. G. S. A. R. II, p. 277. 
 
 63. Nacogdoches County. Altered calcareous greensand marl, 
 
 bed 2 feet, 8 miles northwest of Nacogdoches. Analyzed 
 by J. H. H. T. G. S. A. R. II, p. 277. 
 
 64. Nacogdoches County. Same as No. 64, but roasted. Anal- 
 
 yzed by J. H. H. T. G. S. A. R. II, p. 277. 
 
 65. Nacogdoches County. Oil-bearing greensand marl, 15 miles 
 
 S. E. of Nacogdoches. Analyzed by L. E. Magnenat. T. G. 
 S. A. R. n, p. 277. 
 
 66. Nacogdoches County. Oil-bearing greensand marl, 1 mile 
 
 S. W. of Cherino, 20-inch bed. Analyzed by L. B. Mag- 
 nenat. T. S. G. A. R. II, p. 277. 
 
 67. Nacogdoches County. Calcareous greensand marl (Eocene 
 
 tertiary), 1 mile S. W. of Cherino. Analyzed by L. E. 
 Magnetat. T. G. S. A. R. II, p. 277. 
 
 68. Panola County. Greensand (Eocene tertiary), from Alex 
 
 Carter on the Wm. McKnight headright. T. G. S. A. R. 
 II, p. 232. (1890). 
 
 69. Rusk County. Greensand marl (Eocene tertiary), upper bed 
 
 20 feet, Stevens' Branch, Sulphur Springs! Analyzed by 
 J. H. H. T. G. S. A. R. II, p. 259. 
 
 70. Rusk County. Greensand marl (Eocene tertiary), from bed 
 
 6 feet under pyrite, Stevens' Branch, Sulphur Springs. 
 Analyzed by J. H. H. T. G. S. A. R. II, p. 259. (1890). 
 
 71. Rusk County. Greensand marl (Eocene tertiary), from 
 
 middle bed, 6 feet, Stevens' Branch, Sulphur Springs. 
 Analyzed by J. H. H. T. G. S. A. R. II, p. 259. (1890). 
 
 72. Rusk County. Indurated glauconitic clay, between, strata of 
 
 marl, Stevens' Branch, Sulphur Springs. Anal|yzed by , 
 J. H. H. T. G. S. A. R. 11, p. 259. (1890). 
 
 73. Rusk County. Greensand marl (Eocene tertiary), lower 
 
22 University of Texas Bulletin 
 
 bed 3 feet exposed, Stevens' Brancli, Sulphur Springs. 
 Analyzed by L. E. M. T. G. S. A. R. 11, p. 259. (1890). 
 
 74. Rusk County. Altered greensand marl, or fossillferous 
 
 orange loam, Sulphur Springs. Analyzed by L. E. Mag- 
 nenat. T. G. S. A. R. II, p. 259. (1890). 
 
 75. Rusk County. Altered greensand marl, 1 mile east of L. D. 
 
 Stevens' house, near Sulphur Springs. Analyzed by L. B. 
 Magnenat. T. G. S. A. R. II, p. 259. (1890). 
 
 76. 'San Augustine County. Greensand (Eocene tertiary), near 
 
 San Augustine.; Sample from W. L. Belahoussaye, Beau- 
 mont. Analyzed by J. B. S. B. A. 2741. 
 
 III. AlilitrV'JUM 
 
 Note on Composition. — Recent deposits of soil and 
 sand from rivers present a great variety of admixtures of 
 calcareous, siliceous and ferruginous materials. The few an- 
 alyses made do not at all adequately represent the composition 
 of the great variety of substances belonging to this class. Few 
 deposits of this kind exist that do not contain a mixture of many 
 mineral ingredients. 
 Anal. No. 
 
 77. Atascosa County. Alluvium, received from E. E. Baird, from 
 
 S. A. U. & G. Ry., north of Pleasanton. Marked "Atascosa 
 River Sand." Analyzed 1915 by J. E. S. B. A. 2668. 
 
 78. El Paso County. Alluvium from White's Spur, ten miles 
 
 above Bl Paso. Analyzed by P. H. Bates. U. S. G. S. B. 
 340, p. 413. 
 
 79. Hays County. Adobe with gravel. Sample received from 
 
 Deshay Bunton. From hill 2 % miles north of Kyle on 
 the San Antonio-Austin road, near two-story house. Sam- 
 pled bpr G. A. P. Analyzed 1914 by J. E. S. B. A. 2034. 
 
 80. Hays County. Adobe from about 1 mile north of Kyle on 
 
 the Buda-Kyle Mountain Road, about % mile west of the 
 I. & G. N. Ry. Exposure good. Sampled by G. A. P. 
 Analyzed 1914 by J. E. S. B. A. 2016. 
 
 82. La Salle County. Alluvium (adobe) from Dobson, sent in 
 
 by E. R. Breaker. Proposed to be used for ballast. Anal- 
 yzed 1914 by J. E. S. B. A. 2041. 
 
 83. Live Oak County. Alluvium (adobe) from Pant City. Sent 
 
 in by E. R. Breaker, Pleasanton, Texas. Labelled "Adobe 
 Shale." Has given good service as ballast. Analyzed 1914 
 by J. E. S. B. A. 2040. 
 
 84. Live Oak County. Alluvium (adobe) from Fant City. Sam- 
 
Chemical Analyses of T.exas Bocks and Minerals 23 
 
 pie sent in by E. R. Breaker, proposed to be used as ballast. 
 Analyzed 1914 by J. E. S. B. A. 2039. 
 
 85. San Patricio County. Alluvium (adobe) from near Mathis, 
 
 sent in by E. R. Breaker of Pleasanton, Texas. Analyzed 
 1914 by J. B. S. B. A. 2038. 
 
 86. San Patricio County. Alluvium (adobe) from near Matbis. 
 
 Sample sent in by E. R. Breaker, chief engineer of the 
 S. A. U. & G. Ry., Pleasanton. Proposed to be used as 
 hallast. Analprzed 1914 by J. E. S. B. A. 2037. 
 
 87. Travis County. Alluvium (Pleistocene). Heavy calcareous 
 
 clay used in making dry pressed brick at Butler's brick 
 yard, south side of Colorado River, near I. & G. N. Ry., 
 Austin, Texas. U. S. G. S. B. 522, p. 342. 
 
 88. Travis County. Alluvium (Pleistocene). Same as No. 87, 
 
 except light loamy clay used in making sand-mould brick. 
 U. S. G. S. B. 522, p. 342. 
 
 89. Travis Country. Alluvium, 300-400 yards above Pease Park, 
 
 on banks of Shoal Creek, near city of Austin. Analyzed 
 1914 by J. E. S. B. A. 1974. 
 
 90. Travis County. Alluvium, from A. J. Zilker, Austin. La- 
 
 belled "Dry Pressed Brick Clay." Analyzed 1905 by 
 O. H. P. T. M. S. A. 3440. 
 
 91. Travis County. Calcareous brick clay (alluvium), from 
 
 Butler's brick yard, Austin. Analyzed by O. H. P. and 
 S. H. W. U. T. B. 102, p. 204. 
 
 92. Travis County. Alluvium, from A. J. Zilker, Austin. La- 
 
 belled "Mud Brick Clay." Analyzed 1905 by O. H. P. 
 T. M. S. A. 3439. 
 
 93. Travis County. Alluvium (calcareous brick clay), from 
 
 Belcher's place, Austin. TJ. T. B. 102, p. 206. 
 
 Ilia. Caliche 
 
 Definition of Tkrm. — Caliche is a name given to deposits 
 formed on the surface of the ground by precipitation from 
 mineral solutions which are brought to the surface by 
 capilliary currents resulting from the evaportion of ground 
 moisture. It occprs most frequently in arid regions where 
 evaporation is great. I'sually caliche consists of carbonate of 
 lime, but in places it consists of siliceous and ferruginous ma- 
 terial also. It may also contain large amounts of soluble salts. 
 Thus in Chili, it contains large amounts of, sodium nitrate. 
 The rim rock of the High Plains in the Panhandle and the 
 Llano Bstacado is a caliche which has been formed, at least in 
 part, at the level of the ground water below the surface. 
 
24 University of Texas Bulletin 
 
 Anal. No. 
 
 93a. Crosby County. Taken one mile N. W. of Mt. Blanco Post- 
 office. Analyzed 1915 by J. E. S. B. A. No. 2253. 
 
 93b. Karnes County, Taken 365 feet west of bridge No. 184.3 
 from point 600 feet on south side of track of S. A. & A. P. 
 Ry., to be used for ballast. Sent by H. H. Temple, super- 
 intendent maintenance of way, S. A. & A. P. Ry., Yoakum. 
 Analyzed 1914 by J. B. S. B. A. 2071. 
 
 IV. SHALES, CLAYS AND MARLS 
 
 Definition of Terms. — Under the head of shales, clays 
 and marls, there have been analyzed a great assortment of 
 materials more or less useful for the manufacture of clay 
 products such as brick, tile, pottery, cemelit and for use as 
 fuller's earth. Clays are distrib,uted over the entire State. 
 Marls are especially abundant in the Upper Cretaceous for- 
 mation and in deposits of the Tertiary age. They have been 
 used for ages as fertilizers. There is no clear distinction be- 
 tween clays, and marls, nor between clays and shales. Most 
 of our clays from the Pennsylvanian and Permian are suf- 
 ficiently indurated to be called shales. "Where exposed and 
 weathered these may be soft enough to be properly called clays. 
 Applied to the Cretaceous sediments of this kind, the distinc- 
 tion between clay and shale is often based on fissility and 
 laminated structure. Thus the clays of the Eagle Ford, when 
 showing a laminated structure, are apt to be called shales, but 
 in the absence of laminated structure, they are frequently called 
 clays or marls. The Eocene clays are also sometimes called 
 shales when indurated or laminated to a higher degree than 
 most of the clays of this age. The distinction between clays and 
 marls is based on the relative abundance of the calcareous ma- 
 •terials present, the clays and the shales containing relatively 
 less of this ingredient. 
 
 Eor ceramic purposes, chemical analyses of clays are strictly 
 secondary in importance to physical tests, such as for plasticity, 
 shrinkage and behavior on drying, behavior on firing etc. The 
 physical properties of Texas clays which have been tested and 
 published in the Clays of Texas, by H. Ries, University of Texas 
 Bulletin 102, and hence are not republished here. 
 
Chemical Analyses of Texas Bocks and Minerals 25 
 
 The University of Texas is installing a clay testing laboratory 
 so that clays which might be used for ceramic purposes will be 
 tested in a suitable manner. 
 
 Anal. No. 
 
 94. Anderson County. Marl from 1 mile south of Elkhart. 
 
 T. G. S. A. R. I, p. 94. 
 
 95. Bastrop County. Shale (Eocene tertiary), 2% miles from 
 
 Elgin, near M. K. & T.Ry. Analyzed 1904. 
 
 96. Bastrop Count|y. Fire clay 'from Elgin. Analyzed by O. H. P. 
 
 and S. H. W. U. T. B. 102,p. 77. 
 
 97. Bastrop County. Pottery clay (Eocene tertiary), from 3 
 
 miles north of McDade. Analyzed 1914. U. T. B. 365, 
 p. 62. 
 
 98. Bastrop County. Fire clay from near Elgin. Analyzed 1908 
 
 by O. H. P. and S. H. W. U. T. B. 102, p. 77. 
 9 9. Bastrop County. Fire clay (Eocene tertiary), from near 
 Elgin. U. T. B. 365, p. 62. 
 
 100. Bastrop 'County. Sandy brick clay (Eocene tertiary), from 
 
 Elgin. Analyzed by O. H. P. and S. H. W. U. T. B. 365, 
 p. 63. 
 
 101. Bastrop County. Red and brown burning clay from Elgin. 
 
 Analyzed b^y O. H. P. and S. H. W. V. T. B. 365, p. 62. 
 
 102. Bell County. Calcareous clay, from Belton. Analyzed by 
 
 O. H. P. and S. H. W. U. T. B. 102, p. 214. 
 
 103. Bell County. Same locality, etc., as No. 102. 
 
 104. Bexar County. Pottery clay from Stromberg. Analyzed by 
 
 O. H. P. and S. H. W, U. T. B. 102, p. 143. 
 
 105. Bexar County. Pottery clay from 2% miles west of Elmen- 
 
 dorf. Analyzed by O. H. P. and S. H. W. U. T. B. 102, 
 p. 143. 
 
 106. Bexar County. Red and brown burning clay, from Adkins. 
 
 Analyzed by O. H. P. and S. H. W. U. T. B. 365, p. 68. 
 
 107. Bexar County. Easily fusible clay, from south side of Leon 
 
 Creek, near San Antonio, between crossing of dirt road 
 and I. & G. N. Ry., 15 feet thick. U. T. B. 102, p. 266. 
 
 108. Bexar County. Easily fusible clay, on Alazan Creek, IVt 
 
 miles north of I. & G. N. R^y. depot, San Antonio. U. T. B. 
 102, p. 276. 
 
 109. Bexar County. Shale, from near San Antonio. Used by the 
 
 San Antonio Portland Cement Co. in making cement. Lo- 
 cated on I. & G. N. Ry. 5 miles north of San Antonio. 
 University museum specimen No. 1165. Analyzed 1914 
 by J. E. S. B. A. 19-97. 
 
 110. Bexar County. Clay, from Bem Etrick Co., near San Antonio. 
 
 Analyzed by O. H. P. and S. H. W. U. T. B. 102, p. 171. 
 
26 University of Texas Bulletin 
 
 111. Bexar County. Clay from near Elmendorf. Analyzed 1903 
 
 by S. H. W. T. M. S. A. 2052. 
 
 112. Bowie County. Red and brown burning clay, from near 
 
 Boston. U. T. B. 365, p. 74. 
 
 113. Bowie County. Sandy brick clay, from Texarkana. XT. T. B. 
 
 365, p. 74. 
 
 114. Bowie County. Fire clay, from near Boston. Analyzed by 
 
 O. H. P. and S. H. W. U. T. B. 102, p. 101. 
 
 115. Bowie County. Red and brown burning clay, from New 
 
 Boston. Analyzed by 0. H. P. and S. H. W. U. T. B. 102, 
 p. 184. 
 
 116. Brazos County. Clky; from college farm at College Station. 
 
 T. A. E. S. B. 25, p. 269. 
 
 117. Brazos County. Easily fusible clay, from 12 miles south- 
 
 east of College Station. U. T. B. 365, p. 76. 
 
 118. Brewster County. Clay (Upper Cretaceous), from Chieos 
 
 Beds in Chisos Country, west of Chisos Mountains. U. T. B. 
 93, p. 63. 
 
 119. Brewster Count|y. Clay (Tornillo formation), from Chisos 
 
 Country, east side of Rough Run, about 2 miles east of 
 Dogis Mountain. Analyzed by O. H. P.' U. T. B. 93, p. 56. 
 
 120. Brewster County. Chalky clay, from the Chisos Country. 
 
 Terlingua Beds, west of Chisos Pens. Analyzed by O. H. P. 
 U. T. B. 93, p. 40. 
 
 121. Brewster County. Cha,lky clay, from Chisos Country, Ter- 
 
 lingua Beds, south of Cuesta Blanca. Analyzed by O. H. P. 
 U. T. B. 93, p. 40. 
 
 122. Brewster County. Calcareous cla|y, from Terlingua. Anal- 
 
 yzed by O. H. P. and S. H. W. U. T. B. 102, p. 214. 
 
 123. Brewster County. Clay, from N. & S. vein, section 39, Ter- 
 
 lingua Mining Co., Terlingua. Analyzed 1902 by O. H. P. 
 T. M. S. A. 1629. 
 12 4. Brewster County. Clay, stratified vein material, N, & S. vein, 
 section 39, Terlingua Mining Co., Terlingua. Analyzed 
 1902 b|y O. H. P. T. M. S. A. 1640. 
 
 125. Caldwell County. Clay, sample received from E. L. Porch, 
 
 marked "Outcrop near drilling location in eastern end of 
 Caldwell County, near Gonzales county line." Analyzed 
 1915 by J. E. S. B. A. 2644. 
 
 126. Chambers County. Sandy brick clay, from Cedar Bayou. 
 
 U. T. B. 365, p. 91. 
 
 127. Cherokee Country. Sandy brick clay, from Rusk. V. T. B. 
 
 365, p. 92. 
 
 128. Cherokee County. Marl, green clay stratum in greensand 
 
 bed of Cherokee County. T. G. S. A. R. I, p. 94. 
 
 129. Cherokee County. Buff burning and semi-refractory clay 
 
Chemical Analyses of Texas Bocks and Minerals 27 
 
 (Eocene tetriary), from Rusk. U. T. B. 365, p. 91. 
 
 130. Dallas Countjy. Shale (Upper Cretaceous, Eagle Ford), from 
 
 quarry of Texas Portland Cement Co., Dallas. U. S. G. S. 
 B. 522, p. 343. 
 
 131. Dallas County. Same location, etc., as No. 130. 
 
 132. ' Dallas County. Shale, used in making cement, by the Texas 
 
 Portland Cement Co., near Dallas. Analyzed 1914 by 
 J. E. S. B. A. 1998. 
 
 133. Dallas County. Red and brown burning clay (Upper Cre- 
 
 taceous), from West Dallas. U. T. B. 365, p. 104. 
 
 134. Dallas Countp^. Red and brown burning clays (Upper Cre- 
 
 taceous), from West Dallas. Analyzed by O. H. P. and 
 S. H. W. U. T. B. 102, p. 192. 
 
 135. Dallas County. Same location, etc., as No. 134. 
 
 136. Dallas County. Same location, etc., as No. 134. 
 
 137. Dallas County. Red and brown burning clay, same location 
 
 as No. 134. 
 
 138. Delta County. Red and brown burning clay, from Cooper. 
 
 U. T. B. 365, p. 106. 
 
 139. Denton County. Pottery clay, n-aar Denton. U. T. B. 365, 
 
 p. 107. 
 
 140. Denton County. Pottery clay, near Lloyd. U. T. B. 365, 
 
 p. 107. 
 
 141. Denton County. Buff burning and semi-refractory cla|y, top 
 
 layer, from near Denton. U. T. B. 365, p. 107. 
 
 142. Denton County. Buff burning and semi-refractory clay, mid- 
 
 dle layer. Denton. U. T. B. 365, p. 107. 
 
 143. Denton County. Buff burning and semi-refractory clay. 
 
 Denton. U. T. B. 365, p. 107. 
 
 144. DeWitt County. From 840 feet in drill hole, at Cuero. 
 
 Analyzed 1904 by S. H. W. T. M. S. A. No. 2527. 
 
 145. Dickens County. Shale from Spur well. Spur. Depth 2042 
 
 to 2047 feet. Received from Dr. J. A. Udden. Analyzed 
 1914 by S. H. W. B. A. 1325. 
 
 146. Eastland County. Cla,y from Lone Star Coal Co., Cisco. 
 
 Analyzed by O. H. P. and S. H. W. U. T. B. 102, p. 186. 
 
 147. Ellis County. Red and brown burning clay, from Ferris. 
 
 Analyzed by O. H. P. and S. H. W. U. T. B. 102, p. 192. 
 
 148. Ellis County. Red and brown burning clay. Same localil^y, 
 
 etc., as No. 147. 
 
 149. El Paso County. Shale (Lower Cretaceous), % mile south 
 
 of Courchesne Quarry, El Paso, Texas. U. S. G. S. B. 522, 
 p. 413. 
 
 150. El Paso County. Shale (Lower Cretaceous), % mile north 
 
 of Courchesne Quarry, El Paso. U. S. G. S. B. 522, p. 413. 
 
28 University of Texas Bulletin 
 
 151-152. El Paso County. Shale from El Paso Brick Co.'s prop- 
 erty. U. S. G. S. B. 522, p. 413. 
 
 153. Erath County. Shale. Sample received from W. J. Gordon, 
 
 of Thurber, marked "Upper one foot underlying limestone." 
 Analyzed 1915 by J. E. S. B. A. 2523. 
 
 154. Erath County. Red and brown burning clay from Thurber. 
 
 Analyzed by O. H. P. and S. H. W.^ U. T. B. 365, p. 118. 
 155-156. Erath County. Clay for paving brick, from Thurbur. 
 Analyzed by O. H. P, U. T. B. 102, p. 248. 
 
 157. JErath County. Shale, sample recelyed from W. J. Gordon, 
 
 of Thurber, marked "Mixture of lower 5 feet of shale 
 underlying limestone.'' Analyzed 1915 by J. E. S. B. A. 
 2522. 
 
 158. Falls County. Potter|y clay, from Denny. U. T. B. 365, 
 
 p. 119. 
 
 159. Fayette County. Fire clay from property of. Mr. Lytenburg, 
 
 southeast of Lena. Analyzed 1908 by O. H. P. and S. H. W. 
 U. T. B. 102, p. 276. 
 
 160. Fort Bend County. Sandy brick clay (Quaternary), from 
 
 Wilson plantation, Fulshear. U. T. B. 3^5, p. 125. 
 
 161. Gonzales County. Clay (Eocene tertiary), from Harwood's 
 
 property, 6 miles southeast of Gonzales. Analyzed by O. ' 
 H. P. and S. H. W. U. T. B. 102, p. 278. 
 
 162. Gonzales County. Clay from same localit|y as No. 161. 
 
 Analyzed by O. H. P. and S. H. W. U. T. B. 102, p. 281. 
 
 163. Gonzales County. Calcareous clay (Eocene tertiary), Gon- 
 
 zales. Anal^yzed by O. H. P. and S. H. W. U. T. B. 102, 
 p. 214. 
 
 164. Gonzales County. Calcareous clay, from same locality as 
 
 No. 163. U. T. B. 102, p. 214. 
 
 165. Gonzales County. White clay, from Harwood property, 6 
 
 miles southeast of Gonzales. Average of two analyses. 
 1 TJ. T. B. 365, p. 130. 
 
 166. Gonzales County. Clay from Sunset Brick and Tile Co., 
 
 Gonzales. Analyzed h^ O. H. P. T. M. S. A. 1801. 
 
 167. Gonzales County. Clay from Sunset Brick and Tile Co., 
 
 Gonzales. Analyzed by O. H. P. T. M. S. A. 2696. 
 
 168. Grayson County. Red and brown burning clay from Sher- 
 
 man. U. T. B. 365, p. 132. 
 
 169. Gregg County. Sandy brick cla^, Longview. U. T. B. 365, 
 
 p. 133. 
 
 170. Gregg County. Sandy brick clay, Longview. U. T. B. 365, 
 
 p. 133. 
 
 171. Grimes County. Brick clay, near Piedmont Springs. Anal- 
 
 yzed by O. H. P. and S. H. W. U. T. B. 102, p. 287. 
 
Chemical Analyses of Texas Rochs and Minerals 29 
 
 17 2. Grimes County. Clay, 13 miles northeast of Navasota. 
 Analyzed by O. H. P. and S. H. W. U. T. B. 102, p. 270. 
 
 173. Grimes County. Sandy brick clay from Courtney. Analyzed 
 
 by O. H. P. and S. H. W. Min. Ind. 1893, Vol. II, p. 210. 
 
 174. Guadalupe County. Sandy brick clay from Morrison. Min. 
 
 Ind. 1893, Vol. II, p. 210. 
 
 175. Guadalupe County. Calcareous brick clay from Seguin. 
 
 Analyzed by O. H. P. and S. H. W. 0. T. B. 365, p. 135. 
 
 176. Harris County. Sandy brick clay from Center Bayou. U.'T. 
 
 B. 365, p. 139. 
 
 177. Harris County. Red and brown burning clay (Quaternary) 
 
 from Houston. Analyzed by O. H. P. and S. H. W. U. T. 
 B. 365, p. 139. 
 
 178. Harris County. Red and brown burning clay (Quaternary). 
 
 Locality, etc., same as No. 177. 
 
 179. Harrison County. Pottery clay (Eocene tertiar^y) from along 
 
 road from Mlarshall to Jefferson. U. T. B. 365, p. 140. 
 
 180. Harrison County. Sandy brick clay (Eocene tertiary) from 
 
 Marshall. V. T. B. 365, p. 140. 
 
 181. Harrison County. Clay (Eocene tertiary) from A. Dean 
 
 headright. Analyzed in laboratory of Texas Geol. Survey 
 by J. H. H. and L. E. M. U. T. B. 102, p. 291. 
 
 182. Harrison County. Clay (Eocene tertiary) from J. Sanchez 
 
 headright. Analyzed bpr J. H. H. and L. E. M. U. T. B. 
 102, p. 291. 
 
 183. Harrison County. Clay (Eocene tertiary) from F. Wilson 
 
 headright. Analyzed by J. H. H. and L. E. M. U. T. B. 
 102, p. 291. 
 
 184. Harrison County. Clay (Eocene tertiary) from T>. McGray 
 
 headright. Anal,yzed by J. H. H. and L. E. M. U. T. B. 
 102, p. 291. 
 
 185. Harrison County. Clay (Eocene tertiary) from F. Whetstone 
 
 headright. Analyzed by J. H. H. and L. E. M. U. T. B. 
 102, p.. 291. 
 
 186. Harrison County. Clay (Eocene tertiary) from D. McGray 
 
 headright. Analyzed b^y J. H. H. and L. E. M. U. T. B. 
 
 102, p. 291. 
 187.. Harrison County. Clay (Eocene tertiary) from. F. Wilson 
 
 headright. Analyzed by J. H. H. and L. E. M. U. T. B. 
 
 102, p. 291. 
 188. Harrison County. Clay (Eocene tertiary) from Lewis Wat- 
 kins headright. Analyzed bpr J. H. H. and L. E. M. U. T. 
 
 B. 102, p. 291. 
 1S9. Harrison County. Clay (Eocene tertiary) from M. L. Ra- 
 
 ger headright. Analyzed 'by J. H. H. and L. E. M. U, T. 
 
 B. 102, p-. 291. 
 
30 University of Teoms Bulletin 
 
 190. Henderson County. Pottery Clay. Average of two analyses 
 
 of samples from Athens. U. T. B. 365, p. 143. 
 
 191. Henderson County. Clay ( Eocene tertiary) for ornamental 
 
 brick and tiles. From Henry Morrison pit near Athens. 
 T. G. S. A. R. II, p. 199. 
 
 192. Henderson County. Clay (Eocene tertiary) for ornamental 
 
 brick and tiles, from J. B. Attwood Survey near Athens. 
 T. G. S. A. R. II, p. 199. 
 
 193. Henderson County. Fire clay (Eocene tertiary) from Mala- 
 
 koff. Analyzed by O. H. P. and S. H. W. U. T. B. 102, 
 P. 97. 
 
 194. Henderson County. Fire clay (Eocene tertiary) from Mala- 
 
 koff. Analyzed by O. H. P. and S. H. W. U. T. B. 102, 
 p. 97. 
 
 195. Henderson County. Fire clay (Eecene tertiary) from near 
 
 Athens. Analyzed by O. H. P. and S. H. W. U. T. B. 
 102, p. 94. 
 
 196. Henderson County. Fire clay (Eocene tertiary) from near 
 
 Athens. Anal^yzed by O. H. P. andS. H. W. U. T. B. 
 102, p. 96. 
 
 197. Henderson County. Refractory clay (Eocene tertiary) just 
 
 west of town of Athens. T. G. S. A. R. II, p. 197. 
 
 198. Henderson County. Pottery clay from T. Murchison farm 
 
 west side of B. Attwood headright, % mile north and a 
 little east of Athens, T. G. S. A; R. II, p. 198,(1890). 
 
 199. Henderson County. Pottery clay from brook on Bishop 
 
 farm on Boly C. Walter's headright, 1 mile north of Ath- 
 ens. T'. G. S. A. R. II, p. 198 (1890). 
 
 200. Hopkins County. Fire clay from near Sulphur Springs. 
 
 Ries Analysis No. 870. Analyzed by O. H. P. and S. H. 
 W. U. T. B. 102, p. 99. 
 
 201. Hopkins County. Red and brown burning clay from Sul- 
 
 phur Springs. Analyzed by O. H. P. and S. H. W. U. T. 
 B. 102, p. 182. 
 
 202. Houston 'County. Red burning clay (Eocene tertiary) from 
 
 Hurricane Bayou on N. C. Hodge headright. Analyzed by 
 O. H. P. and S. H. W. U. T. B. 102, p. 295. 
 
 203. Houston County. Marl (Eocene tertiary). Sample from 
 
 Major W. J. Borden, United States Engineer, Dallas. 
 Marked "No. 2 hard pan or soft rock found at Hurricane 
 Shoals, Trinity River, 243 miles below Dallas, and 90 
 miles above Riverside." Analyzed 1915 by J. B. S. B. 
 A. 2698. 
 
 204. Houston County. Marl (Eocene tertiarjy). Fourteen miles 
 
 east of Crockett. T. g! S. A. R. I, p. 94. 
 
 205. Hunt County. Red and brown burning clay (Upper creta- 
 
Chemical Analyses of Texas Bocks and Minerals 31 
 
 ceous) from Greenville. Analyzed by O. H. P. and S. H. 
 W. U. T. B. 365, p. 149. 
 
 206. Jefferson County. Red and brown burning clay (Quater- 
 
 nary) from Beaumont. Analyzed by O. H. P. and S. H. 
 W. U. T. B. 365, p. 153. 
 
 207. Jones County. Cupriferous clay from the Avoca Area. 
 
 Analyzed by H. Tobelmann. Economic Geology, Vol. 10, 
 p. 642. 
 
 208. Lamar County. Red and brown burning clay from Paris. 
 
 Analyzed by O. H. P. and S. H. W. U. T. B. 102, p. 192. 
 
 209. Lamar County. Sample and locality, etc., similar to No. 208. 
 
 Reference identical. 
 
 210. Lee County. Sandy brick clay (Eocene tertiary) from Gid- 
 
 dings. U. T. B. 365, p. 163. 
 
 211. Leon County. Clay (Eocene tertiary). Sample received 
 
 from Bear Grass Coal Co., of Jewett. Marked "Three- 
 foot strata In 18-ft. deposit." Analyzed 1915 by J. B. S. 
 B. A. 2575. 
 
 212. Limestone County. Fire clay from Headsville. U. T. B. 
 365, p. 166. 
 
 213. Limestone County. Fire clay from Headsville. Analyzed 
 
 by O. H. P. and S. H. W. U. T. B. 102, p. 92. 
 
 214. Marion County. Clay (Eocene tertiary) from Thos. Far- 
 
 rell's bank, A. Richardson headright, near Jefferson. U. 
 T. B. 102, p. 297. 
 
 215. Marion County. Clay (Eocene tertiary) from J. Higgins' 
 
 yard, near Jefferson, U. T. B. 102, p. 298. 
 
 216. Marion Count|y. Pottery clay. Mining Industry, Vol II, p. 
 
 210 (1893). 
 
 217. McLennan County. Marl (Upper cretaceous) from Waco. 
 
 T. M. S. A. No. 1440. 
 
 218. McLennan County. Red and brown burning clay (Upper 
 
 cretaceous) from Waco. Analyzed by O. H. P. and S. H. 
 W. U. T. B. 365, p. 173. 
 
 219. McLennan County. Calcareous clay from WacQ. Analyzed 
 
 by O. H. P. and S. H. W. U. T. B. 102, p. 214. 
 
 220. McCulloch County. Clay from Canyon Division of Brown- 
 
 wood bed, 1 % miles N. E. of Milburn. T. G. S. A. R. No. 4 
 (for 1892), p. 440: Paper by N. F. Drake, "Report of 
 Colorado Coal Field of Texas." 
 
 221. McMullen County. White clay (Siliceous sinter. Eocene ter-. 
 
 tiary) from 12 miles north of Tilden. Analyzed 1916 by 
 J. E. S. B. A. 2988. 
 
 222. Medina County. Calcareous brick clay (Upper cretaceous) 
 
 from D'Hanis. Analyzed by O. H. P. and S. H. W. U. T. 
 B. 365, p. 180. 
 
32 University of Texas Bulletin 
 
 223. Milam County. Fire clay from Vogel's MJne, Rockdale, 
 
 clay under lignite. Analyzed by O. H. P. and S. H. W. 
 U. T„ B. 102, p. 161. 
 
 224. Milam County. Fire clay (Eocene tertiary). Top clay 
 
 from Olsen's Mine, Rockdale. Analyzed by O. H. P. U. 
 T. -B. 102, p. 158. 
 
 225. Milam County. Fire cla^ (Eocene tertiary) under lignite 
 
 in Olsen's Mine, Rockdale. Analyzed by O. H. P. U. T. 
 B. 102, p. 159. 
 
 226. Milam County. Fire clay from near Milano Junction. 
 
 Analyzed by O. H. P. U. T. B. 102, p. 89. 
 
 227. Milam County. Fire clay from Rockdale. U. T. B. 365, 
 
 p. 182. 
 
 228. Milam County. Fire clajy from Rockdale. Analjrzed by O. 
 
 H. P. U. T. B. 365, p. 182. 
 
 229. Nacogdoches County. Pottery clay froin Nacogdoches. 
 
 U. T. B. 365, p. 186. 
 
 230. Navarro County. Red and brown burning clay (Upper Cre- 
 
 taceous) from Corslcana. Analyzed by O. H. P. and S, 
 H. W. U. T. B. 365, p. 188. 
 
 231. Nueces County. Clay. Analprzed 1890 by Dr. Edgar Ever- 
 
 hart. T. G. S. A. R. II, p. 51. 
 
 232. Panola County. White sandy clay (Eocene tertiary) on 
 
 Carthage and Timpson Road, 2 miles south of Carthage. 
 Analyzed by O. H. P. and S. H. W. U. T. B. 102, p. 300. 
 
 233. Panola County. Gray sandy clay, above lignite shale on 
 
 Allen Baker farm, M. Payne headright, 4 miles east of 
 Carthage. Analyzed by O. H. P. and S. H. W. U. T. B. 
 102, p. 300. 
 
 234. Panola County. Plastic ferruginous clay, 1 mile east of Ta- 
 
 tum Station. Analyzed by O. H. P. and S. H. W. U. T. 
 B. 102, p. 300. 
 
 235. Panola Count|y. Red and gray mottled clay, under iron bed. 
 
 Six Mile Creek. Analyzed by O. H. P. and S. H. W. U. 
 T. B. 102, p. 300. 
 
 236. Panola County. Indurated sandy clay, Donnel Field, % 
 
 mile S. E. of Carthage. Analyzed by O. H. P. and S. H. 
 W. U. T. B. 102, p. 300. 
 
 237. Panola County. Lignitic clay shale, lower bed near Iron 
 
 Bayou, Lagrone headright. Analyzed by O. H. P. and S. 
 H. W. U. T. B. 102, p. 300. 
 
 238. Panola County. Stiff, tenacious clay, sandy soil, light 
 
 brown color, from lignitic series in plowed field, R. W. 
 Kenard farm, Daniel Martin headright. Analyzed by O. 
 H. P. and S. H. W. U. T. B. 102, p. 300. 
 
Chemical Analyses of Texas Bocks and Minerals 33 
 
 239. Parker County. Pottery clay from Rock Creek, about 15 
 
 miles west of Weatherford. U. T. B. 365, p. 197. 
 
 240. Polk County. Sand|y brick clay from Hortense. Analyzed 
 
 by O. H. P. and S. H. W. U. T. B. 365, p. 200. 
 241.~ Polk County. Easily fusible clay from near Carmona. U. 
 
 T. B. 365, p. 200. 
 242. Red River County. Sandy brick clay from Detroit (Upper 
 
 cretaceous formation). U. T. B. 365, p. 205. 
 .243. Robertson County. Clay from Calvert. Analyzed by O. H. 
 
 P. and S. H. W. U. T. B. 102, p. 269. 
 
 244. Robertson County. Fire clay from Bremond. U. T. B. 365, 
 
 p. 207. 
 
 245. Rusk County. Gray clay, lignitic series (Eocene tertiary), 
 
 used at Henderson pottery, % mile north of courthouse 
 at Henderson. U. T. B. 102, p. 302. 
 
 246. Rusk County. Indurated glauconitic clajy (Eocene tertiary) 
 
 from greensand marl series near Sulphur Springs, 18 miles 
 south of Henderson. U. T. B. 102, p. 302. 
 
 247. Rusk County. Micaceous sandy lignitic clay, 18 miles south 
 
 of Henderson. U. T. B. 102, p. 302. , 
 
 248. Rusk County. Mottled orange loam. Lower Orange Sand 
 
 Formation, on hillside, northern exposure at Millville. U. 
 T. B. 102, p. 302. 
 
 249. Rusk County. Dark gray, slightly magnesian, pocket bed 
 
 Lignitic Series on Larissa Road, 8 miles west of Hender- 
 son. U. T. B. 102, p. 302. 
 
 250-a. Rusk County. Pottery clay from near Henderson. U. T. 
 B. 365, p. 209. 
 
 250-b. San Patricio County. Clay. From land owned by R. A. 
 Arnold, % mile west of Portland. B. A. No. C286. 
 Analyzed by J. E. S. 1916. 
 
 251. Shackelford County. Clay (Permian), average of 6 analy- 
 
 ses, from Black Ranch, 10 to 12 miles north of Albany. 
 U. T. B. 365, p. 215. 
 
 252. Smith County. Pottery clay, near Gardeni Valleiy. Anal- 
 
 yzed by O. H. P. and S. H. W. U. T. B. 102, p. 304. 
 
 253. Smith County. Same as No. 252, except that sample came 
 
 from near Tyler. 
 
 254. Smith County. Pottery clay from Llebrich Potterjy Co., 
 
 near Tyler. U. T. B. 365, p. 217. 
 
 255. Tarrant County. Calcareous clay shale from Washita Di- 
 
 vision of the Comanchean formation, from property of the 
 O. K. Cattle Co., about 4 miles east of Tarrant County 
 courthouse. Analyzed 1915 b^y J. E. S. B. .A. 2748. 
 
 256. Tom Green County. From San Angelo. Analyzed by S. H. 
 
 W. U. T. B. 102, p. 268. 
 
34 University of Texas Bulletin 
 
 257. Travis County. Marl "(Taylor marl division of the Lower 
 
 cretaceous), on east bank of Big Walnut Creek, 2 miles 
 below Sprinkle and 6% miles northeast of Austin. IT. S. 
 G. S. B. 522, p. 342. 
 
 258. Travis Count|y. Marl (Taylor marl division of the Lower 
 
 cretaceous), from wagon road on hill, just west of Little 
 Walnut Creek, 4% miles northeast of Austin and 1 mile 
 north of Pecan Springs. U. S. G. S. B. 522, p. 342. 
 
 259. Travis County. Cla^y shale (Eagle Ford of Lower creta- 
 
 ceous), from south si,de of Big Walnut Creek 9% miles 
 northeast of Austin and 1% miles below Watters Station. 
 U. S. G. S. B. 522, p. 342. 
 
 260. Travis County. Limy shale (Eagle Ford of the Lower 
 
 cretaceous), from 8 feet of bed below middle of Eagle 
 Ford clay from bluff of small creek near J. ■& G. N. Ry., 
 1 mile south of Colorado River near Austin. U. S. G. S. 
 B. 522, p. 342. 
 
 261. Travis County. Limy shale (Eagle Ford of the Lower 
 
 cretaceous), upper 10 feet of Eagle Ford clay from bluff 
 of small creek near I. & G. N. Ry., 1 mile south of Colo- 
 rado River near Austin. U. S. G. S. B. 522, p. 342. 
 
 262. Travis County. Cla^ (Webberville formation) from Wil- 
 
 barger Creek, 3 miles below Manor. U. S. G. S. B. 522, 
 p. 342. 
 
 263. Travis County. Clay (Del Rio formation of the Lower 
 
 cretaceous), from bluff on Barton Creek, 1-3 mile above Iti 
 mouth, sampled above and below wagon road near bridge. 
 U. S. G. S. B. 522, p. 342. 
 
 264. Travis County. Clay (Webberville formation. Lower cre- 
 
 taceous) from Moore's Branch of Onion Creek, 9 miles 
 
 southeast of Austin. U. S. G. S. B. 522, p. 342. 
 
 265-275. Travis County. Clays (Del Rio formation of the Lower 
 
 cretaceous) for cement manufacture, from property of the 
 
 Austin Portland Cement Co., 3% miles northwest of the 
 
 !■ center of Austin. Depth of strata 10 to 20 feet. TJ. S. 
 
 G. S. B. 522, p. 341. 
 
 276. Tyler County. Sandy brick clay from Colmesneil. TJ. T. 
 
 B. 365, p. 232. 
 
 277. Van Zandt County. Clay (Eocene tertiary) from well 10 
 
 miles northeast of Canton. T. G. S. A. R. I, p. 94. 
 278 and 279. Van Zandt County. Clay marl (Eocene tertiar|y) 
 
 from Grand Saline Station on T. & P. Ry. T. G. S. A. R. 
 
 I, p. 94. 
 280. Washington County. Calcareous clay from Brenham. 
 
 Analyzed by O. H. P. and S. H. W. U. T. B. 102, p. 214. 
 
Chemical Analyses of Texas Bocks and Minerals 35 
 
 281. Washington County. Clay from Tatum Farm, near Bur- 
 
 ton. Analyzed b^y T. B. Tucker, U. S. G. S. B. 470, p. 
 318. 
 
 282. Washington County. Clay from Elliott's Farm, near Bur- 
 
 ton. Analyzed by W. W. Camp of Denver, Colo. IT. S. 
 G. S. B. 470, p. 323. 
 
 283. Webb County. Buff burning, semi-refractory clay from 
 
 Minera. U. T. B. 365, p. 241. 
 
 284. Webb County. Calcareous brick clay (Eocene Tertiary) 
 
 from Laredo. Analyzed by O. H. P. and S. H. W. U. T. B. 
 365, p. 242. 
 
 285. Webb County. Shale from under coal at Minera, near Laredo. 
 
 Analyzed by O.'H. P. and S. H. W. U. T. B. 102, p. 153: 
 
 286. Webb County. Shale beneath coal at Minera. Analyzed by 
 
 O. H. P. and S. H. W. U. T. B. 102, p. 153. 
 
 287. Webb County. Shale under lower or San Pedro seam at 
 
 Cannel, near Laredo. Analyzed by O. H. P. and S. H. W. 
 V.T. B. 102, p. 153. 
 
 288. Webb County. Weathered shale from the lower seam or 
 
 San Pedro seam at Cannel. Used for dry pressed bricks 
 at Laredo. Analyzed by O. H. P. and S. H. W. U. T. B. 
 102, p. 153. 
 
 289. Wharton County. Calcareous brick clay, from Wharton. 
 
 Analyzed by O. H. P. U. T. B. 102, p. 214. 
 
 290. Same as No. 289. 
 
 291. Same as No. 289. 
 
 292. Williamson County. Chalk-marl (Upper Cretaceous) from 
 
 San Gabriel River.' U. S. G. S. A. R. Ill, p. 737. (?) 
 
 293. Williamson County. Greensand marl (Upper Cretaceous). 
 
 From beneath I. & G. N. Ry. bridge over Brushy Creek. 
 Analyzed by G. H'. Wooten. T. G. S. A. R. Ill, p. 355. 
 
 294. Williamson County. Taylor marl (Upper Cretaceous) from 
 
 lower portion of Taylor marl bed Brushy Creek, % mile 
 S. E. of Taylor. Analyzed by J. A. Taff. U. S. G. S. A. R. 
 XXI, Part VII, p. 337. 
 
 295. Williamson County. Taylor marl (Upper Cretaceous) from 
 
 central portion of Taylor marl bed at Rice's Crossing, 
 Brushy Creek. Analyzed by J. A. Taff. U, S. G. S. A. R. 
 XXI, Part VII, p. 337. 
 
 296. Williamson County. Taylor marl (Upper Cretaceous) from 
 
 Taylor marl bed at Rice's Crossing on Brushy Creek. An- 
 alyzed by J. A. Taff, U. S. G. S. A. R. XXI, Part VII, p. 337. 
 
 297. Williamson County. Calcareous ■ clay from Calaveras. An- 
 
 alyzed by O. H. P. and S. H. W. V. T. B. 102, p. 214. 
 
 298. Williamson County. Calcareous clay from Taylor. Analyzed 
 
 by O. H. P. and S. H. W. U. T. B. 102 p, 214. 
 
36 University of Texas Bulletin 
 
 299. Wilson County. Fire clay (Eocene Tertiary) from near 
 
 Sutherland Springs. Analyzed 1903 by S. H. W. T. M. 
 S. A., No. 2053. 
 
 300. Wilson County. ■ Pottery clay (Eocene Tertiary) from Laver- 
 
 nia. U. T. B. 365, p. 249. 
 
 301. Wilson County. Buff burning, semi-refractory clay (Eocene 
 
 Tertiary) from Calaveras. Analyzed by O. H. P. and S. 
 H. W. IT. T. B. 365, p. 249. 
 
 302. Wilson County. Calcareous brick clay (Eocene Tertiary) 
 
 from Calaveras. Analyzed by O. H. P. and S. H. W. U. 
 T. B. 365, B. 249. 
 
 303. Wise County. Easily fusible clay. (Pennsylvanian) from 
 
 Bridgeport. Analyzed by O. H. P. and S. H. W. U. T. B. 
 102, p. 272. 
 
 304. Wise County. Red and brown burning clay. (Pennsylvan- 
 
 ian) from Bridgeport. Analyzed by O. H. P. and S. H. W. 
 U. T. B. 102, p. 188. 
 
 305. Wood County. Pottery clay (Eocene Tertiary). Five miles 
 
 east of Winnsboro, used by the Winnsboro pottery. Analy- 
 zed by S. H. W. T. M. S. A. No. 2508. 
 ^06. Wood County. Pottery clay. Average of two analyses of 
 samples from Cornersville. U. T. B, 365, p. 253. 
 
 307. Wood, County. Pottery clay. Average of 2 analyses of sam- 
 
 ples from Winnsboro. U. T. B. 365, p. 253. 
 
 308. Young County. Sandy brick clay (vitrifiable) 14 miles west 
 
 of town of Graham. U. T. B. 365, p. 255. 
 
 309. Young County. Paving brick clay. From land of H. K. 
 
 Graham, near Graham. Analyzed by O. H. P. and S. H. W. 
 U. T. B. 102, p. 245. 
 
 310. Young County. Paving brick clay from gig tank 14 miles 
 
 west of Graham. Analyzed by 0. H. P. and S. H. W. U. 
 T. B. 102, p. 247. 
 
 311 Shale (Upper Cretaceous) from bedof Trinity 
 
 River, near Texas Midland Ry. bridge about 50 mi,les below 
 Dallas. Sample received from W. J. Barden, U. S. Engineer. 
 Analyzed 1915 by J. E. S. B. A. 2697. 
 
 V. FULLER'S EARTH 
 
 Note on Composition and Method of Testing to Reveal 
 Quality. — Fuller's earth is a mixture of clay and sand of such 
 physical structure or porosity as to give it a large surface area. 
 Material of this composition, when brought in contact with 
 aqueous or oily liquids containing coloring matter and other par- 
 ticles in a fine state of suspension, known as colloidal solution, 
 
Chemical Analyses of T.exas Bocks, and Minerals 37 
 
 attract and hold such coloring particles, etc., to themselves, and 
 thus serve to clarify such liquids. The extent of the clarifying 
 action is only dependent upon the porosity or extent of surface 
 in the fuller's earth, and is not essentially dependent upon its 
 chemical composition. It is found that almost all clays exert 
 such clarifying action and act as fuller's earth; but the amount 
 of earth required to remove a certain amount of coloring mat- 
 ter varies greatly, and the term is applied only to such clay 
 joid sand mixtures of which comparatively small amounts suf- 
 fice to remove coloring matter from aqueous and oily solutions. 
 Hence the quality of a fuller's earth is measured by deter- 
 mining the amount required to decolorize any particular oil as 
 compared with the amount of a fuller's earth in common use 
 which will produce the same effect. A chemical analysis of a 
 fuller's earth indicates nothing concerning its quality and is 
 practically useless. For a thorough discussion of the technology 
 of fuller's earth, see Bulletin 71, U. S. Bureau of Mines, Ful-- 
 ler's Earth, by C. L. Parsons. 
 
 According to U. S. Geol. Survey's Report on "Fuller's Earth 
 in 1917", there were 72,870 short tons of fuller's earth mined 
 and marketed in the United States during 1917, at an average 
 price of $10.66 per ton. By far the larger part of this was 
 produced and marketed in the eastern States (Florida, Georgia, 
 and Massachusetts), with Texas next in rank. The average 
 'price paid for the earth in Texas was $12.17. 
 . During 1917, 16,994 short tons were imported from aibroad. 
 
 Anal. No. 
 312. Burleson County. Somerville fuller's earth from Fuller'* 
 
 Earth Co., Somerville, Texas. Analyzed by Dr. P. C. Thlela 
 
 of Coffieyville, Kan. B. A. 2113. 
 S13. Burleson County. Fuller's earth "Brantley Brand" from 
 
 SomerTille Development and Improvement Co., Somerville, 
 
 Texas. Analyzed by Dr. F. C. Thiele. B. A. 2146. 
 
 314. Fayette County. Fuller's Earth. Sample sent to University 
 
 of Texas Bureau laboratory by J. C. Melcher, O'Qulnn, 
 Texas. Marked "No. 1." Analyzed 1914 by Dr. F. C. 
 Thiele, chemist for the Cudahy Refining Co., Coffeyvllle, 
 Kans. B. A. 2108. Not suited for extensive technical use, 
 because of high weight per cubic f pot. 
 
 315. Same generally as No. 314. B. A. 2109. 
 
38 University of Texas Bulletin 
 
 316. Same as Nos. 314 and 315, except that use is practical only 
 
 ■when fuller's earth is well dried. B. A. 2110. 
 
 317. Fayette County. Fuller's earth sent in by H. S. Turnage, 
 
 Giddings, TeXas. Sample obtained from near Muldoon. 
 B. A. 2112. High ignition loss, acidity, and wt. per cu. ft. 
 make it impracticable for extensive use technically. 
 
 318. Shelby County. Fuller's earth. From C. L. Milledge, of 
 
 Timpson, Texas. Analyzed by Dr. F. C. Thiele. B. A. 2114. 
 
 319. Washington County. Fuller's earth from the Stanley tract 
 
 four miles north of Burton. Sample taken and analysis 
 made by E. P. ,Schoch. The bleaching itests showed this 
 earth to be equal to, if not better than the best English 
 fuller's earth. The deposit was developed by the Texas 
 Land and Improvement Company of Dallas, and regular 
 shipments were made for quite a while. 
 
 VI. LIMESTONE 
 
 Note on Occurrence and Composition. — Limestones occur 
 among the sediments of all ages. They are ' most com- 
 mon west of the Balcones Escarpment, which extends 
 from Dallas to San Antonio and from San Antonio to Del Rio. 
 In the Tertiary and Pleistocene deposits which cover the coastal 
 plain, limestones are rare. Such few limestones as occur in this 
 region in the Tertiary and Pleistocene are for the most part soft 
 and unsuitable for building material. Our purest limestones 
 are found in the Comanchean which covers the south half of the 
 Great Plains in this State. The Comanchean limestones are 
 rarely magnesian. A few per cent of magnesia is frequently to 
 be found in the Pennsylvanian limestones. In the samples given 
 below, a rough classification has been made of some of the lime- 
 stones, referring them to different geological divisions; but in 
 the case of a large number of .analyses, it has not been practica- 
 ble to make this classification. 
 
 Limestone is composed mainly of calcium carbonate. Its 
 purest form is the crystalline material known as calcite. Stat- 
 uary marble is a granular aggregate of calcite particles. With 
 the admixture of clay, limestone passes gradually into argil- 
 laceous limestone, calcareous mudstone and finally into inco- 
 herent marL Limestone containing admixtures of other im- 
 purities are described as siliceous, sandy, carbonaceous, bitumi- 
 nous, ferruginous and phosphatic limestones. The majority of 
 
Chemical Analyses of Tfixas Eocks and Minerals 39 
 
 limestones are bedded rocks of sedimentary origin and are com- 
 posed of the calcareous remains of marine organisms. As a 
 general rule, the compactness of a limestone is a measure of its 
 geological age and vice versa, the hardest limestones are found 
 in the oldest formations. 
 
 (a) Gam^ibrian 
 Anal. No. 
 
 746. Burnet County. West side of A. & N. W. Ry., a short dis- 
 
 tance south of Honey Creek. Sampled by G. A. P., 1914. 
 Museum No. 1979. Analyzed by J. E. S. B. A. 1833. [See 
 footnote.] 
 
 (6) Ordovician 
 
 747. Burnet County. Sampled about M mile west of the A. & N. 
 
 W. Ry., and about 5 miles N. E. of Fairbanks, on Honey 
 Creek above bridge on Reed Yett's place, by G. A. Park- 
 inson. Analyzed 1914 by J. E. S. Museum No. 1957. 
 B. A. 1811. [See footnote.] 
 
 748. Burnet County. Sampled by G. A. P., about % mile east 
 
 of A. & N. W. Ry., and about 5 miles east of Fairbanks 
 on Reed Yett's place on Honey Creek below bridge. 
 Museum No. 1959. Analyzed 1914 by J. E. S. B. A. 1813. 
 [See footnote.] 
 
 749. Burnet County. Sampled by G, A. P., on land of E. O. Wen- 
 
 gren, about % mile west of A. & N. W. Ry., and about 6 
 miles east of Fairland, about % mile up Hamilton Creek, 
 from its junction with Delaware Creek. Analyzed 1914 
 by J. B. S. B. A. 1815. [See footnote.] 
 • 750. Burnet County. Reed Yett's place, first creek north from 
 Sudduth section house on A. & N. W. Ry., and about % 
 mile down the creek. Sampled by G. A. P. Analyzed 1914 
 by J. E. S. -B. A. 1831. [See footnote.] 
 
 751. San Saba County. Museum sample No. 720, marked: "Litho- 
 
 graphic, Mrs. Houston's Cherokee Creek." Analyzed 1914 
 by J, E. S. B. A. 1917. 
 
 752. San Saba County. Museum sample No. 612, marked: 
 
 "Lithographic B. R. Russell's Ranch." Analyzed 1914 b|y 
 J. E. S. B. A. 1918. 
 
 753. San Saba County. Museum No. 722, marked: "Mrs. Hous- 
 
 ton's Cherokee Creek." Analyzed 1914 by J. E. S. B. 
 A. 1621. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 
40 University of Texas Bulletin 
 
 (c) Pennsylvanian 
 
 754. Burnet County. About 1 mile northeast of A. & N. W. Ry. 
 
 station at Marble Falls, and % mile east of high school 
 building. Sampled by G. A. P. Museum No. 1966. 
 Analyzed 1914 by J. B. S. B. A. 1820. [See footnote.] 
 
 755. Burnet County. From cut through Backbone Ridge, A. & 
 
 N. W. Ry., about 1 mile north of Marble Falls. Sampled 
 by G. A. P. Museum No. 1968. Analyzed 1914 by J. B. 
 S. B. A. 1822. [See footnote.] 
 
 756. Eastland County. From Tiffin Quarry. Sample received Jan. 
 
 1915, from Tiffin Crushed Stone Co., Ranger, Texas. An- 
 alyzed 1»15 by J. E. S. B. A. 2231. [See footnote.] 
 
 757. Eastland County. Ditto as No. 756. 
 
 758. Eastland County. From Rogers Quarry. Sample sent to 
 
 Lab. of Univ. of Tex. Bur. Be. Geol. by Engineering Dept. 
 T. & P. Ry. Co., Dallas. Analyzed 1915 by J. E. S. B. A. 
 2211. [See footnote.] 
 
 759. Jack County. Museum No. 747, marked: "Rlsley Bros., 
 
 Jacksboro." Analyzed 1914 by J. E. S. B. A. 1916. 
 
 760. Jack County. Limestone from Risley Bros., Jacksboro. U. 
 
 T. B. 365, p. 150. 
 
 761. Jack County. Limestone, sample from J. W. Fox, Stewarton. 
 
 V. T. B. 365, p. 150. 
 
 762. Jack County. Limestone, tested as road material by the 
 
 U. S. Office of Public Roads, Washington, D. C. U. T. B. 
 365, p. 151. 
 
 763. Jack County. Sample of blue-gray limestone received from 
 
 Risley Bros., Jacksboro. Analyzed 1913 by S. H. W. 
 B. A. 549. 
 
 764. Jack County. Sample of gray limestone received from Risley 
 
 Bros., Jacksboro. Analyzed 1913 by S. H. W. B. A. 550. 
 
 765. Jack County. Limestone from Jacksboro. Analyzed 1914 by 
 
 J. E. S. B. A. 1533. 
 
 766'. Palo Pinto County. Sample from Mineral Wells. Analyzed 
 by J. E. S. B. A. 1613. 
 
 767. Palo Pinto County. Prom mountain property of J. C. 
 Burch, Mineral Wells. Sample received from Fred Bur- 
 man. Commercial Club, Mineral Wells. Analyzed 1915 
 1 by J. E. S. B. A. 2484. [See footnote.] 
 
 7 6 8. "I Palo Pinto County. From Mineral Wells Crushed Stone Co., 
 
 769.1 used for ballast road making, bitulithic pavement, etc.- U. 
 
 770.J T. B. 365, p. 191. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of Texas Bocks and Minerals 
 
 41 
 
 771. 
 
 772. 
 
 773. 
 
 774. 
 775. 
 
 San Saba County. Limestone from bed 2 miles south of 
 Richland Springs, from land belonging to W. H. Gibbons. 
 Analyzed 1913 by S. H. W. B. A. 824. 
 
 San Saba County. Gray and buff limestone, 2 % miles south- 
 east of San Saba. Sample received from W. W. McDowell, 
 McKinney, Texas. Analyzed 1915 by J. E. S. B. A. 2669. 
 
 San Saba County. Gray and brown limestone. 2 1^ miles 
 S. E. of San Saba. Analyzed 1915 by J. E. S. B. A. 2670. 
 
 San Saba County. Gray limestone. Ditto as for No. 2 670. 
 
 Stephens County. From David Cole, Caddo, Texas, Analyzed 
 1913 by .T. E. S. B. A. 557. 
 
 (d) Permian 
 
 776. 
 777. 
 778. 
 
 779. 
 
 780. 
 
 781. 
 
 782. 
 
 783. 
 
 784. 
 
 785. 
 
 786. 
 
 787. 
 788. 
 
 789. 
 
 790. 
 
 Callahan County. From 2 miles west of Baird. Analyzed 
 
 1914 by J. E. S. B. A. 1608. 
 Callahan County. From 1 mile west of Baird. Analyzed 
 
 1914 by J. E. S. B. A. 1607. 
 Culberson County. Sample of limestone from El Capitan 
 
 Peak, Guadalupe Mts. Analyzed by W. T. Schaller. T. M. 
 
 S. B. 9, p. 41. 
 Jones County. Limestone from quarry of A. C. Fox, Lueders. 
 
 U. T. B. 365, p. 156. 
 Jones County. Sample from Lueders. Analyzed 1913 by 
 
 S. H. W. B. A.554. 
 Jones County., Sample from Lueders, Texas. Analyzed 1912 
 
 by J. E. S. B. A. 1483. 
 Jones County. From Lueders. Analyzed 1914 by J. E. S. 
 
 B. A. 1624. 
 Jones County. 
 
 B. A. 1551. 
 Jones County. 
 
 B. A. 1549. 
 Jones County. 
 
 B. A. 1538. 
 Jones County. 
 
 B. A. 1484. 
 Jones County. 
 
 From Lueders. Analyzed 1914 by J. E. S. 
 
 From Lueders. Analyzed 1914 by J. E. S. 
 
 From Lueders. Analyzed 1914 by J. E. S. 
 
 From Lueders. Analyzed 1914 by J. E. S. 
 
 T. M. S. A. 
 
 From Lueders. 
 Shackelford County. Sample taken 7 miles west of Albany. 
 
 Analyzed 1914 by J. B. S. B. A. 1469. 
 Wichita County. Beaverburk limestone, Wichita formation, 
 
 Ifrom about % mile west of Burk. U. T. B. 246, p. 34. 
 Wichita County. Beaverburk limestone, Wichita formation, 
 
 from survey 33, H. & T. C. R. R. U. T. B. 246, p. 34. 
 
42 University of Texas Bulletin 
 
 (e) Gomanchean Cretaceous 
 
 791. Bexar County. Museum No. 1322,' marked: "Lithographic 
 
 limestone, from near Leon Springs." Analyzed 1914 hy 
 J. E. S. B. A. 1904. 
 
 792. . Bexar County. Mus. No. 1321. Analyzed 1914 by J. B. S. 
 
 B. A. 1671. 
 
 793. Bexar County. Prom Balcones. Mus. No. 700. Analyzed 
 
 1914byJ. E. S. B. A. 1670. 
 
 794. Bexar County. Sampled east of Helotes. Analyzed 1914 by 
 
 J. E. S. B. A. 1623. 
 
 795. Bexar County. Sampled at Balcones. Analyzed 1914 by 
 
 J. E. S. B. A. 1592. 
 
 796. Bexar County. Mus. No. 753, marked: "Leon Lime Co., San 
 
 Antonio, stone from Leon Springs." Analyzed 1914 by 
 J. E. S. B. A. 1926. 
 
 797. Bexar County. 14 miles south of San Antonio on S. A. & 
 
 A. P. Ry. Analyzed 1914 by J. E. S. B. A. 1482. 
 
 798. Bosque County. Sampled 1% miles west of Iredell on Texas 
 
 Central Ry. Analyzed 1914 by J. E. S. B. A, 1526. 
 
 799. Brewster County. Buda limestone from 1 mile east of Bo- 
 
 quillas. U. T. B. 93, p. 28. 
 800.") Burnet County. Bituminous limestone from Post Mountain, 
 801.}. Burnet.- Analysis partly recalculated. U. S. G. S. A. R. 
 802.J 22, Parti, p. 322. 
 803. Burnet County. Sample from Reed Yett, 1% miles east of 
 
 Pairland. Lower part of the hill. Analyzed by J. B. S. 
 
 B. A. 1806. [See footnote.] 
 
 804. Burnet County. Sampled 5 miles south of Bertram. An- 
 
 alyzed 1914 by J. E. S. B. A. 1674. 
 
 805. Comal County. From Dittllnger Lime Co., New Braunfels, 
 
 marked: "Pulverized limestone." Analyzed 1915 by J. E. 
 S. B. A. 2479. 
 
 806. Comal County. Sample received from Dittlinger Lime Co., 
 
 New Braunfels, Museum No. 2086. Analyzed 1914 by J. 
 B. S. B. A. 1980. [See footnote.] 
 
 807. Comal County. Sample from Dittlinger Lime, New Braunfels. 
 
 Museum No. 2084. Analyzed 1914 by J. E. S. B. A. 1978. 
 [See footnote.] 
 
 808.1 
 809. 
 810. 
 811. 
 
 Comal County. Samples sent in by C. W. Ling, San Antonio, 
 and taken at or near New Braunfels. Analyzed 1915 by 
 J. E. S. B. A. 2324-2327 inc. [See footnote.] 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of Texas Bocks and Minerals 43 
 
 812. Comal County. Limestone screenings from New Braunfels. 
 
 Analyzed 1914 by J. B. S. B. A. 1657. 
 813. 1 Comal County. Sampled few miles south of New Braunfels 
 814. j on I. & G. N. Ry. U. T. B. 365, p. 98. 
 
 815. Comal County. From widow Rate's place, about 5 miles 
 
 north of New Braunfels, on 'the old government road and 
 about 100 yds. from crossing of wagon road and M. K. & 
 T. Ry. Sampled by G. A. P. Analyzed 1914 by J. B. S. 
 B. A. 2099. [See footnote.]- 
 
 816. Comal County. From Comal Rock Co., New Braunfels. An- 
 
 alyzed 1915 by J. E. S. B. A. 2286. [See footnote.] 
 
 817. Comal County. Sample from Dittlinger Lime Co., New 
 
 Braunfels. Mus. No. 2085. Analyzed 1914 by J. B. S. 
 B. A. 1979. [See Footnote.] 
 
 818. Coryell County. Sample from B. R. Boone, Oglesby. An- 
 
 alyzed 1915 by J. E. S. B. A. 2771. 
 819.'] 
 
 820. Coryell County. From quarry of D. R. Boone, Lone Star 
 821.1" Lime Works, Oglesby. Analyzed by J. E. S. TJ. T. B'. 
 822.J 365, p. 100. 
 
 823. Coryell County. Sample from Oglesby. Analyzed 1913 by 
 
 S. H. W. B. A. 555. 
 
 824. Denton County. Located about 3% miles southwest of 
 
 Denton and about 1 mile west of M., K. & T. Ry. Sam- 
 pled by G. A. P. Analyzed 1915 by J. B. S. B. A. 
 2469. [See Foot-note]. 
 
 825. Edwards County. Section 71, Block 3, G. H. & S. A. Ry., 
 
 6 miles northwest of Leaky. Analyzed 1913 by J. B. S. B. 
 
 A. 560. 
 
 826. Edwards County. Barkdale. Analyzed 1913 by S. H. W. 
 
 B. A. 562. 
 
 827. Bl Paso County. Limestone from Courchesne Quarry, El 
 
 Paso. V. S. G. S. B 340, p. 413. 
 
 828. Erath County. Sample from Dublin tested as road mate- 
 
 rial by U. S. Office of Public Roads at Washington, D. C. 
 under their number 7297. Museum No. 1926. Analyzed 
 by E. L. Porch. B. A. 1849. 
 
 829. Gillespie County. Mus. No. 716, marked "Head of Live 
 
 Oak Creek." Analyzed 1914 by J. E. S. B. A. 1908. 
 
 830. Gillespie County. Mus. No. 715, marked: "Pajo Alto 
 
 Creek." Analyzed 1914 by J. B. S. B. A. 1911. 
 
 Foot Note: Physixial tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
44 University of Texas Bulletiyi 
 
 831. Hamilton County. One mile east of Hico on the Tex. Cent. 
 
 Ry. Analyzed 1914 by J. E. S. B. A. 1525. 
 
 832. Hays County.^ About 20,000 ou. yds. exposed, about 4 
 
 miles southwest of San Marcos on the S. A.-Austin road, 
 % mile northwest of I. & G. N. Ry. Sampled by G. A. 
 P. Analyzed by J. B. S. B. A. 2070. [See Foot-note.] 
 
 833. Hays County. Just above I. & G. N. Ry. bridge on Onion 
 
 Creek, 15 miles from Austin and about % mile north of 
 Buda. Sampled by-G. A. P. Analyzed 1914 by J. E. S. 
 B. A. 1929. [See Foot-note.] 
 
 834. Llano County. From A. Parkhill's Ranch. Analyzed 1901 
 
 by O. H. P. T. 'M. S. A. No. 1328. 
 
 835. McLennan County. Sample of limestone from town of 
 
 Crawford, reputed to be best quality in the State. U. T. 
 B. 365, p. 174. 
 
 836. Montague County. Bluish limestone from Sampson Rid&e, 
 
 St, Jo. T. M. S. B. 3, p. 80. 
 
 837. Pecos County. From Anderson's Headquarters Ranch. T. 
 
 M. S. A. No. 12 32. Analyzed 1901 by O. H. P. 
 
 838. Pecos County. Bituminous limestone, occurring at "Oil 
 
 Seep,'' 15 miles northeast of Ft. Stockton., T. M. S. B. 
 2, p. 9. 
 
 839. Tarrant County. Sample received by Lab. of Bur. Bcon. 
 
 Geol. of Univ. of Texas from W. S. Meller, Ft. Worth. 
 
 Exact locality not stated. U. T. B. 365, p. 223. 
 840. 
 841. 
 842. 
 843. 
 844. 
 845. 
 846. 
 847. 
 848. 
 849. 
 850. 
 851. 
 852. 
 853. 
 854. 
 855. 
 856.. 
 857. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
 Travis County. Soft limestone, Austin chalk formation, from 
 Big Walnut Creek, 8 miles northeast of 'the center of the 
 City of Austin, and 1% miles northwest of Sprinkle. An- 
 alyzed by P. H. Bates and A. J. Phillips, in Labs, of the 
 U. S. G. S. at St. Louis, Mo., U. S. G. S. B. 522, p. 341-342. 
 
Chemical Analyses of Texas Bocks and Minerals 45 
 
 858. 
 859. 
 860. 
 
 Travis County. Soft limestone for cement manufacture 
 from property of the Austin Portland Cement Manufactur- 
 861.^ Ing Co., Austin; 3% mtles from Austin. Depths vary from 
 862. 1 12-30 ft. Analyzed by P. H. B. and A. J. P. in Labs, of the 
 
 863. J U. S. G. S. at St. Louis, Mo. U. S. G. S. B. 522, pp. 341-342. 
 
 864. Travis County. From Dry Creek near Austin. Analyzed 
 
 1914 by J. E. S. B. A. 1616. 
 
 865. Travis County. Limestone from % mile above Barton 
 
 Springs. Analyzed 1914 by J. E. S. B. A. 1834. [See 
 footnote.] 
 '866. Travis County. Sample from near Splcewood Springs, 7 
 miles west of north of Austin. Analyzed by J. E. S. B. 
 A. 1787. [See footnote.] 
 
 867. Travis County. About 3 miles west of Austin on 'the Bee 
 
 Cave Road. Sampled by G. A. P. Mus. No. 2043. An- 
 alyzed 1914 by J. E. S. B. A. 1899. [See footnote.] 
 
 868. Travis County. Sampled at Dry Creek Quarry, N. W. of 
 
 Austin, tr. T. B. 365, p. 229. 
 
 869. Travis County. About 3% milgs west of Austin on Bee Cave 
 
 road. Sampled by G. A. P. Mus. No. 2062. Analyzed 1914 
 by J. E. S. B. A. 1900. [See footnote.] 
 
 870. Travis County. Sampled at Splcewood Springs, 7 miles 
 
 northwest of Austin. Analyzed by J. B. S. B. A 1788. 
 [See footndte.] 
 
 871. Travis County. An old specimen from the University of 
 
 Texas Museum^ marked "Coen marble, from near Austin." 
 Analyzed 1914 by J. E. S. B. A. 1508. 
 
 872. Travis County. Old Johnson Quarry at Deep Eddy, on Col- 
 
 orado River near Austin. Analyzed 1914 by J. E. S. B. A. 
 1786. [See footnote.] 
 
 873. Travis County. Sample from Barton Creek, 1 mile above 
 
 Barton Springs. Analyzed 1914 by J. E. S. B. A. 1835. 
 [See footnote.] 
 
 874. Travis County. From Old Zilker Quarry, opposite Barton 
 
 Springs, near Austin. Sampled by G. A. P. Mus. No. 
 2019. Analyzed 1914 by J. E. S. B. A. 1874. [See foot- 
 note. ] 
 
 875. Travis County. About 1 mile from Oak Hill, near Freder- 
 
 icksburg Road, about 4 miles west of I. & G. N. Ry. Sam- 
 pled by G. A. P. Analyzed 1914 by J. B. S. B. A. 1838. 
 [See footnote.] 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
46 University of Texas Bulletin 
 
 876. Travis County, Old Michael Place about 3% miles S. W. 
 
 of Austin, near Fredericksburg road. Sampled by o. A. P. 
 Museum No. 2032. Analyzed 1914 by J. E. S. B. A. 1887. 
 [See footnote.] 
 
 877. Travis County. From Fredericksburg road, within limits of 
 
 Austin, abou't 200 yds. west of I. & G. N. Ry. Sampled by 
 G. A. P. Analyzed 1914 by J. B. S. B. A. 1840. [See 
 footnote.] 
 
 878. Travis County. From Old Taylor Quarry at lime kiln, near 
 
 end of I. & G. N. Ry. tracks, Austin Dam. Analyzed 1914, 
 by J. E. S. B. A. 1785. [See footnote.] 
 
 879. Travis County. Near Duval Station House, and about 200 
 
 yds. west of I. & G. N. Ry. Sampled by G. A. P. Museum 
 No. 2142. Analprzed 1915 by J. B. S. B. A. 2259. [See 
 footnote.] 
 
 880. Travis County. 6 miles wesit of Austin, from Marshall quarry 
 
 on Marshall goat ranch. Sampled by G. A. P. Mus. No. 
 2063. Analyzed 1914 by J. B. S. B. A. 1902. [See foot- 
 note. ] 
 
 881. Travis County. Austin White Lime Co., McNeill, from an 
 
 old pit on west side of road. Sampled by G. A. P. Museum 
 No. 2064. Analyzed 1914 by j. B. S. B. A. 1958. [See 
 footnote.] 
 
 882. Travis County. Old Zilker Quarry, opposite Barton Springs 
 
 near Austin. Sampled by G. A. P. Univ. Mus. No. 2020. 
 Analyzed 1914 by J. B. S. B. A. 1875. 
 
 883. Travis County. Sample from dry creek near Austin. An- 
 
 alyzed 1914 by J. B. S. B. A. 1617. 
 
 884. Travis County. Old Walsh Quarry, near Austin Dam on 
 
 I. & G. N. Ry. tracks. Analyzed by J. E. S. B. A. 1784. 
 [See footnote.] 
 
 885. Travis County. From Dry Creek (Walker) Quarry, near 
 
 Austin. Analyzed 1914 by J. E. S. B. A. 1618. 
 
 886. Travis County. Mus. No. 752. Sample from Austin White 
 
 Lime Co., McNeill. Analyzed 1914 by J. B. S. B. A. 1920. 
 
 887. Travis County. Limestone, Georgetown formation. Museum 
 
 No. 748. Marked "J. C. Ferguson, McNeill." Analyzed by 
 J. E. S. B. A. 1924. 
 
 888. Travis County. Near Camp Mabry, on south side of county 
 
 road about 1 mile west of I. & G. N. Ry. Sampled by 
 G. A. P. Analyzed 1914 by J. E. S. B. A. 1836. [See 
 footnote.] 
 
 Foot Note: Physical tests — hardness, toughness, etc. — ^have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of Texas Bocks and Minerals- 47 
 
 889. Travis County. On property of J. A. Patton, about 9 miles 
 
 S. W. of Austin, west of Fredericksburg road, near Oak 
 Hill, and about 5 miles west of I. & G. N. Ry. Analyzed 
 
 1914 by J. E. S. B. A. 1837. [See footnote.] 
 
 890. Travis County. On Will Blrkmer's place 1 mile west of I. 
 
 & G. N. Ry. and about 12 miles south of Austin. Sampled 
 by G. A. P. Museum No. 2044. Analyzed 1914 by J. B. S. 
 B. A. 1936. [See footnote.] 
 
 891. Travis County. First creek north of Duval Section House on 
 
 I. & G. N. Ry. at crossing of wagon road and railroad, about 
 12 miles N. W. of Austin. 
 
 892. Williamson County. Museum No. 2033, marked "Cedar Park, 
 
 Williamson County, R. B. George & Co." Analyzed 1914 
 by J. E. S. B. A. 1927. 
 
 893. Williamson County. Museum No. 751, marked "Round Rock 
 
 White Lime Co., Round Rock, Texas." Analyzed 1914 by 
 J. E. S. B. A. 1922. 
 
 894. Williamson County, Museum No. 751, marked "Cedar Park, 
 
 Williamson Co." Analyzed 1914 by J. E. S. B. A. 1925. 
 
 895. Williamson County. Museum No. 1633, marked "Two miles 
 
 south of Cedar Park." Analyzed 1914 by J. E. S. B. A. 
 1921. 
 
 896. Williamson County. From E. Gluck, Cedar Park. Analyzed 
 
 1915 by J. E. S. B. A. 2048. 
 
 897. Williamson County. Sample from Cedar Park. Analyzed 
 
 1913 by S. H. W. B. A. 551. 
 
 898. Williamson County. Sample from Round Rock. U. T. B. 
 
 365, p. 246. 
 
 899. Williamson County. Sample from near Cedar Park, sent in 
 
 by J. R. King. U. T. B. 365, p. 246. 
 
 900. Williamson County. 2 miles north of Cedar Park. Analyzed 
 
 1913 by S. H. W. B. A. 831. 
 
 901. Williamson County. Limestone from Leander. Analyzed 
 
 1913byS. H. W. B. A. 711. 
 
 902. Williamson County. Museum No. 726, marked "Leander, 
 
 Texas." Analyzed 1914 by J. B. S. B. A. 1919. 
 
 903. Williamson County. On Brushy Creek, 1% miles north of 
 
 Round Rock, on I. & G. N. Ry. Sample received by Bur. 
 Lab. from T. H. Love, Roadmaster, I. & G. N. Ry. Analyzed 
 
 1914 by J. B. S. B. A. 1984. [See footnote.] 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 In University of Texas Bulletin 62 on Road Material of Texas. 
 
48 University of Texas Bulletin 
 
 904. Williamson County. On land of B. A. Richards, Round Rock, 
 
 on I. & G. N. Ry. road to Georgetown. Sampled by G. A. P. 
 Analyzed 1914 by J. E. S. B. A. 1948, [See footnote.] ' 
 
 905. Williamson County. Along lake. Brushy Creek, about 200 
 
 yds. above I. & G. N. Ry. bridge. Sampled by G. A. P. 
 
 Museum No. 2050. Analyzed 1914 by J. E. S. B. A. 1944. 
 [See footnote.] 
 
 906. Williamson County. About % mile from Round Rock and 
 
 Georgetown spur, I. & G. N. Ry., from land of B. C. Rich- 
 ards. Sampled by G. A. P. Analyzed 1914 by J. B. S. 
 B. A. 1949. [See footnote.] 
 
 907. Williamson County. Forstman Place, about 1% miles east 
 
 of Round Rock on Lake Brushy Creek, 300 yds. southeast 
 of water tank on main line of I. & G. N. Ry. Sampled by G. 
 A. P. Analyzed 1914 by J. E. S. B. A. 1&53. [See foot- 
 note.] 
 
 908. Uvalde County. Sampled by T. W. Vaughan on Uvalde Quad- 
 
 rangle. Analyzed by W. F. Hillebrand. U. S. G. S. B. 
 591, p. 232. (For this analysis look under heading "mis- 
 cellaneous.") 
 
 (f) Upper Cretaceous 
 
 909. Anderson County. Sample taken at Salt City, 6 miles west 
 
 of Palestine. White chalky, and fossiliferous, with seams 
 of yellow calclte. U. T. B. 365, p. 56. 
 
 910. Bexar County. From Portland Cement Co., about 5 miles 
 
 north of San Antonio, used for making cement. Analyzed 
 byJ. E. S. B. A. 1903. 
 
 911. Bexar County. Soft or chalky limestone from near San An- 
 
 tonio. U. S. G. S. B. 522, p. 51. 
 912."| Bexar County. Limestone from Alamo Cement Co.'s quarry, 
 913.1 near San Antonio. Analyzed at Lab. of the Alamo Cement 
 
 J Co. U. S. G. S. B., 522, p. 343. 
 914.1 Bexar County. From quarry of Alamo Cement Co., San An- 
 915. j. tonio. Analyzed by R. H. B. and A. J. P. at U. S. G. S. 
 
 J Lab. at St. Louis, Mo. U. S. G. S. B. 522, p. 343. 
 916.] Brewster County. From the Colquitt-Tigner Mine, at Bo- 
 917. 1 quillas Flags. U. T. B. 93, p. 30. 
 
 918.1 Dallas County. Sample received from F. J. Shuett, Duncan- 
 919.}. ville. Analyzed 1915 by J. B. S. B. A. 2310 and 2311, 
 J respectively. [See footnote.] 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of Texas Bocks and Minerals 49 
 
 920.] Dallas County. Prom quarry of the Texas Portland Cement 
 921. 1 Co., Dallas. U. S. G. S. B. 522, p. 343. 
 
 922. Dallas County. Soft or chalky limestone from Dallas. U. S. 
 
 G. S. B. 522, p. 51. 
 
 923. El Paso County. Used hy the Southwestern Portland Cement 
 
 Co., El Paso, Texas. Analyzed by J. E. S. B. A. 1999. 
 
 924. Red River County. Sample received from Clarencfc Hocker, 
 
 ClarksvUle. Classed as argillaceous limestone. Marked: 
 "From along public road, Clarksville." Museum No. 2316. 
 Analyzed 1915 by J. E. S. B. A. 2518. [See footnote.] 
 
 925. Travis County. Partings from top and middle of 18 ft. ledge 
 
 near mouth of small creek emptying into south side of 
 , Colorado River, % mile below concrete bridge, Austin. 
 
 U. S. G. S. B. 522, p. 342. 
 
 926. Travis County. About 500 yds. above bridge, on Onion Creek, 
 
 on the Austin-Creedmoor road, up the creek. Sampled by 
 G. A. P. Museum No. 2005. Analyzed by E. L. Porch, 
 1914. B. A. 1860. [See footnote.] 
 
 927. Travis County. E. Martin's Quarry on Onion Creek, about 
 
 1 mile above bridge on the Austln-Creedmoor road. Sam- 
 pled by G. A. P. Museum No. 2006. Analyzed 1914 by 
 E. L. P. B. A. 1861. [See footnote.] 
 
 928. Travis County. East of and near Austin. Analyzed by S. H. 
 
 W. B. A. 910. 
 929.~| Travis County. From Big Walnut Creek, 8 miles northeast 
 
 930. of center of Austin, Texas, or % to 1% miles northwest of 
 
 931. f Sprinkle. Soft limestone for making cement. Austin chalk 
 
 934. formation U. S. G. S. B. 522, p. 342. 
 
 935. Travis County. 9 miles northeast of center of Austin, Texas. 
 
 U. S. G. S. B. 522, p. 342. 
 
 936. Travis County. Lower 18 ft. of ledge, near mouth of small 
 
 creek emptying into south side of Colorado River, % mile 
 below concrete bridge. U. S. G. S. B. 522, p. 342. 
 
 937. Travis County. Top 10 or 12 feet of ledge, same locality 
 
 as in No. 936. U. S. G. S. B. 522, p. 342. 
 
 938. Williamson County. One mile below Jonah, on the San Gab- 
 
 riel River. T. G. S. A. R. Ill, p. 354. 
 
 939. Williamson County. 3 miles southeast of Hutto, an Brushy 
 
 Creek. T. G. S. A. R. Ill, p. 352. 
 
 940. Williamson County. On Brushy Creek, about 3 miles below 
 
 Round Rock. T. G. S. A. R. Ill, p. 351. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 m9.de on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
^0 Uwiversity of Texas Bulletin 
 
 (g) Tertiary 
 
 941. Fayette County. Museum No. 2250, marked: "Alabaster." 
 
 From near O'Quinn. Analyzed 1914 by J. E. S. B. A. 
 
 2116. [See footnote.] ' 
 
 942."| Fayette County. Three to four miles west of La Grange, on 
 
 943. ^ Buckner's Creek, sent in by J. C. Melcher, O'Quinn. Analyzed 
 
 J by J. E. S. U. T. B. 365, p. 123. 
 
 Ch) Pleistocene 
 
 V 
 
 ■944. Crosby County. Soft white chalky bed of Blanco Pliocene 
 Age. One mile southwest of Mt. Blanco postofflce. An- . 
 alyzed by J. E. S. B. A. 2253. 
 
 945. Deaf Smith County. Sample from Bryant and Huffman, 
 
 Hereford, Texas. Marked: "Hadden Estate." Museum No. 
 2298. Analyzedi 1915 by J. E. S. B. A. 2483. [See 
 footnote.] 
 
 946. Lubbock Coumty. Cap rock lime from State Experimental 
 
 Farm, 2 miles east of Lubbock. Analyzed 1915 by J. B. S. 
 B. A. 2228. 
 
 947. Lubbock County. Cap rock lime trow railroad gravel pit at 
 
 north edge of town of Lubbock. Ana,lyzed 1915 by J." E. S. 
 B. A. 2229. 
 
 {i) Unclassified 
 
 / 
 
 948. Anderson County. Six miles west of Pa lestine. Analyzed by 
 
 J. E. S. 1914. B. A. 1609. 
 
 949. Brewster County. From Cedar Springs, east of Nine Point 
 
 Mountain. Museum No. 702. Analyzed 1914 by J. E. S. 
 B. A. 1680. 
 
 950. Burnet County. About % mile nortli of Sudduth section 
 
 house on the A. & N. W. Ry. west oi' the railroad, and up 
 ; the creek about 450 yds. Sampled by G. A. P. Museum 
 
 No. 1978. Analyzed 1914 by J. E. S. B. A. 1832. [See 
 footnote/] 
 
 951. Burnet County. Backbone Creek, in Lacey's pasture, about 
 
 % mile east of A. & N. W. Ry., where creek cuts through 
 ridge, and about 1 % miles north of the railroad station at 
 Marble Falls. Sampled by G. A. F. Museum No. 1967. 
 Analyzed 1914 by J. E. S. B. A^ 1821. [See footnote.] 
 
 Foot Note: Physical tests — hardness, toughness, etc.-^— have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of Texas Bocks and Minerals 51 
 
 952. Burnet County. Prom cut on A. & N, W. Ry., 1 mile south 
 
 of Delaware water tank. Sampled by G. A. P. Museum 
 No. 1978. Analyzed 1914 by J. E. S. B. A. 1826. [See 
 footnote.] 
 
 953. Burnet County. R. H. Hoover's place, about 400 yds. west 
 
 of cut on A. & N. W. Ry., and 1 mile south of Delaware 
 watertank. Sampled by G. A. P. Museum No. 1973. An- 
 alyzed 1914 by E. L. P. B. A. 182?. [See footnote.^ 
 
 954. Burnet County. From Ferguson Place, near Pairland. An- 
 
 alyzed by J. E. S. B. A. 1793. [See footnote.] 
 
 955. Burnet County. From Wood's Branch, above Wood's Sand- 
 
 stone Quarry, Burnet. Analyzed !)y J. B. S. B. A. 1791. 
 [See footnote.] 
 
 956. Burnet County. Prom Ferguson County, near Fairland. 
 
 Analyzed by J. E. S. B. A. 1794. [See footnote.] 
 
 957. Burnet County^. 1% miles S. E. of Fairland, and about a 
 
 mile east of A. & N. W. Ry. A. H. Edwards. Bottom 
 strata. Analyzed \)y J. B. S. B. A. 1801. 
 
 958. Burnet County. From property of Reed Yett. About V4, 
 
 mile north of the A. & N. W. Ry., and about 1% miles east 
 of Fairland. Heavy exposure. Analyzed by J. E. S. 
 B. A. 1808. [See footnote.] 
 
 959. Burnet Co.unty. R. H. Hoover's place on the Burnet-Marble 
 
 Falls road. On a hill just north of Hoover's ranch house, 
 about 1 mile west of the A. & N. W. Ry. and about 3% 
 miles southwest of Burnet. Sampled by G. A. P. Museum 
 No. 1971. Analyzed 1914 by J. E. S. B. A. 1825. [See 
 footnote.] 
 
 960. Burnet County. R. H. Hoover's place, about 1 mile up 
 
 Honey Creek, from crossing on A. & N. W. Ry. and about 
 % mile from the railroad. Sampled by G. A. P. Analyzed 
 1914 by E. L. P. B. A. 1830. [See footnote.] 
 
 961. Burnet County. R. H. Hoover's place, about % mile east 
 
 of A. & N. W. Ry., and about 6 miles east of Pairland, 
 about % mile down Hamilton Creek from pumping station. 
 Sampled by G A. P. Museum No. 1963. Analyzed 1914 by 
 J. B. S. B. A. 1817. [See footnote.] 
 
 962. Burnet County. Deposit from white cliff. Analyzed 1901 by 
 
 O. H. P. T. M. S. A. No. 1313. 
 
 963. Burnet County. Right-hand fork of Wood's Branch above 
 
 Wood's Quarry. Analyzed 1914 by J. E. S. B. A. 1792. 
 [See footnote.] 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
52 University of Texas Bulletin 
 
 964.^ Burnet County. Hoover's Point. Analyzed 1914 by J. E. S. 
 965.^ B. A. 1495 and 1496 respectively. 
 
 966. Burnet County. 1% miles S. E. of Fairland. Center stratum. 
 
 Analyzed by J. B. S. B. A. 1802. [See footnote.] 
 
 967. Burnet County. IVz miles S. E. Fairbanks. Top stratum. 
 
 Analyzed by J. E. S. B. A. 1803, [See footnote.] 
 
 968. Burnet County. Reed Yett. % mile east ol Fairland. Top 
 
 of hill. Analyzed 1914 by J. E. S. B. A. 1809. [See 
 footnote.] 
 
 969. Burnet County. Reed Yett. % mile east of Fairland. Cen- 
 
 ter of hill. Analyzed 1914 by J. E. S. B. A. 1807. [See 
 footnote.] 
 
 970. Burnet County. Argillaceous limestone from R. H. Hoover's 
 
 place, about % mile east of the A. & N. W. Ry., and about 
 6 miles east of Fairland, about 150 yds. above pumping 
 station on Hamilton Creek. Sampled by G. A. P. Museum 
 No. 1962. Analyzed 1914 by J. E. S. B. A. 1816. [See 
 footnote.] 
 
 971. Burnet County. Hoover's Valley. Lithographic limestone. 
 
 Museum No. 703. Analyzed 1914 by J. E. S. B. A. 1905. 
 
 972. Caldwell County. Siliceous limestone from the West Fork. 
 
 Analyzed 1914 by J. E. S. B. A. 1610. 
 
 973. Coleman County. Gray limestone from Santa Anna. An- 
 
 alyzed 1914 by J. E. S. B. A. 1481. 
 
 974. Coleman County. Light red limestone from Santa Anna. 
 
 Analyzed 1914 by J. E. S. B. A. 1480. 
 
 975. Coleman County. Partial analysis. T. M. S. A^. No. 3432. 
 
 976. Coleman County. Sample from Museum No. 754, marked: 
 
 'Santa Anna, Coleman County." Analyzed 1914 by J. E. 
 S. B. A. 1923. 
 
 977. Denton County. From property of Jack Pass. Tested for 
 
 J. S. Niebert, Mayor of Denton, by J. E. Stullken, Chemist 
 for the University Bur. Econ. Geol. Deposit located about 
 
 5 miles north of Denton and about 3 miles west of M. K. 
 
 6 T. Ry. Sampled by G. A. P. Analyzed 1914. B. A. 
 2452. [See footnote.] 
 
 978. El Paso County. Museum No. 1325, marked: "Blue lime- 
 
 stone. Base of Quitman Mts. east side below Old Republic 
 Mill." Analyzed 1914 by J. E. S. B. A. 1625. 
 
 979. El Paso County. Limestone used by the Southwestern Port- 
 
 land Cement Co., of El Paso. TJ. T. B. 365, p. 116. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of Texas Bocks and Minerals 53 
 
 980.] Erath County. Received from W, K. Gordon, of Thurber. 
 981. [. Analyzed 1914 by J. B. S. B. A. 2143, 2144, and 2145 
 982.1 respectively. 
 
 983. Erath County. Limestone from Thurber. T. M. S. A. No. 
 
 1503. 
 
 984. Erath County. Sample from W. K. Gordon, Thurber. An- 
 
 alyzed 1914 by J. E. S. B. A. 2142. 
 
 985. Erath County. Sample received from W. K. Gordon, Thur- 
 
 ber. Analyzed 1914 by J. E. S. B. A. 2141. 
 
 986. Gillespie County. Museum No. 709, marked "North Texas 
 
 Creek, Gillespie County." Analyzed 1914 by J. E. S. B. 
 A. 1683. 
 
 987. Gillespie County. Museum No. 717, marked: "Squaw 
 
 Creek, Gillespie County." Analyzed 1914 by J. E. S. B. 
 A. 1915. 
 
 988. Gillespie County. Museum No. 708, marked "Smith's Moun- 
 
 tain, Gillespie County." Analyzed 1914 by J. E. S. B. A. 
 1914. 
 
 989. Gillespie County. Museum No. 711, marked "Pedernales, 
 
 Gillespie County." Analyzed 1914 by J. E. S B. A. 1913. 
 
 990. Gillespie County. Museum No. 712, marked "Pedernales, 
 
 Gillespie County." Analyzed 1914 by J. E. S. B. A. 1912. 
 
 991. Gillespie County. Museum No. 710, marked "North Grass 
 
 Creek, Gillespie County." Anlayzed 1914 by J. E. S B. A. 
 1907. 
 
 992. Gillespie County. Sample from Willow City. Analyzed 1914 
 
 by J. E. S. B. A. 1553. 
 
 993. Hays County. About 3 miles west of Buda, on the Buda- 
 
 Kyle road, about % mile west of the I. & G. N. Ry. Ex- 
 posure light. Sampled by G. A. P. Analyzed 1914 by 
 J. E. S. B. A. 2013. [See footnote.] 
 
 994. Hays County. About 4 miles S. W. of Buda, on the Buda- 
 
 Kyle Mountain Road about 1 mile west of the I. & G N. Ry. 
 Exposure good. Sampled by G. A. P. Analyzed 1914 by 
 J. E. S. B. A. 2014. [See footnote.] 
 
 995. Hays County. About 5% miles S. W. of Buda, on the Buda- 
 
 Kyle Mountain Road, about 1 mile west of the I. & G. N. 
 Ry. Exposure heavy. Sampled by G. A. P. Analyzed 
 1914 by J. E. S. B. A. 2015. [See footnote.] 
 
 996. Hays County. About 3% miles S. W. of Kyle on the old 
 
 government road near gravel pit. Sampled by G. A. P. 
 Analyzed 1914 by J. E. S. B. A. 2028. [See footnote.] 
 
 Foot Note : . Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
54 University of Texas Bulletin 
 
 9 97. Hays County. About 3 miles S. W. of Kyle on the old gov- 
 ernment road, was used on this road. Sampled by G. A. P. 
 Analyzed 1914 by J. E. S. B. A. 2029. [See footnote.] 
 
 998. Hays County. About 1 mile north of Kyle on the Austin- 
 San Antonio road. Heavy exposure in John Arbour's field, 
 east of and near the 1. & G. N. Ry. Sampled by G. A. P. 
 Analyzed 1914 by J. E. S. B. A. 2030. [See footnote.] 
 
 99 9. Hays County. Eugene Woods. About 1% miles north of 
 Kyle on the S. A.-Austin road, about 100 yds. south of road 
 and about one mile east of I. & G. N. Ry. Sampled by G. 
 A. P. Analyzed. 19 14'by J. E. S. B. A. 2031. [See foot- 
 note.] 
 
 1000. Hays County. Plum Creek, about 200 yds. up the creek from 
 
 the bridge oh the San Antonio-Austin road. Deshay Bun- 
 ton place. Exposure fair. Sampled by G. A. Parkinson. 
 Analyzed 1914 by J. E. S. B. A. 2033. [See footnote.] 
 
 1001. Hays County. U. Williams. Exposure heavy. About 2% 
 
 miles south of San Marcos, on the San Antonio-Austin road, 
 50 yds. west of the I. & G. N. Ry. Sampled by G. A. P. 
 Analyzed 1914 by J. E. S. B. A. 2055. [See footnote.! 
 
 1002. Hays County. John Benneck. About 1% miles S. B. of San 
 
 Marcos, 200 yds. north of San Antonio-Austin Post road, 
 and about % mile N. W. of I. & G. N. Ry. Exposure heavy. 
 Sampled by G. A. P. Analyzed 1914 by J. E. S. B. A. 
 205 6. [See footnote.] 
 
 1003. Jefferson County. From cap rock of oil wells, Beaumont. 
 
 T. M. S. B. 1, p. 27. 
 
 1004. Kaufman County: Sample received in August, 1914, from 
 
 U. S. Oface of Public Roads, Washington, D. C, under their 
 No. 7015, marked "Near Chief, Kaufman County." An- 
 alyzed 1914 by J. B. S. B. A. 1847. 
 
 1005. Limestone County. Gray sample from Tehuacana. Analyzed 
 
 1914 by J. E. S. B. A. 1644. 
 
 1006. Limestone County. Soft yellow limestone, from Tehuacana. 
 
 Analyzed 1914 by J. B. S. B. A. 1646. 
 
 1007. Limestone County. Prom Tehuacna. Analyzed 1913 by S. 
 
 H. W. B. A. 832. 
 
 1008. Limestone Countj'. From Tehuacana. Sample received from 
 
 U. S. office of Public Roads, Washington, D. C, under their 
 No. 7224, from Tehuacana. Muesum No. 1925. Analyzed 
 1914 by J. E. S. B. A. 1848. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of Texas Bocks and Minerals 55 
 
 1009. McLennan County. Prom T. S. White, R. F. D. No. 8, Waco 
 
 Texas. Marked "From locality 9 miles north of Waco." 
 Analyzed 1915 by J. B. S. B. A. 2514. 
 
 1010. McLennan County. Blue limestone from cistern on Bosque 
 
 farm, 4 miles west of Waco. T. M. S. A. No. 1480. 
 
 1011. McLennan County. From Mill's crossing road, 4% miles 
 
 from Waco. T. M. S. A. 1479. 
 
 1012. Navarro County. Bluish limestone, sample from McCall- 
 
 Moore Engineering Co., Waco. Marked: "Bluish limestone, 
 about 10 miles S. E. of Corsicana, near Richland, on Mc- 
 Daniell farm." Analyzed 1914 by J. E. S. B. A. 1642. 
 
 1013. Palo Pinto County. Sample received from W. K. Gordon, 
 
 Thurber, Texas. Marked "From Mingus, Texas." Analyzed 
 1915 by J. B. S. B. A. 251-5. 
 
 1014. Presidio County. From Shaffer District. Museum No. 1327. 
 
 Analyzed 1914 by J. B.' S. B. A. 1688. 
 
 1015. Smith County. Prom Brooks Saline, in S. W. part of county. 
 
 Analyzed 1812 by S. H. W. B. A. 198. 
 
 1016. Smith County. Southeast side of Brooks Saline, in south- 
 western part of county. Analyzed 1912 by S. H. W. B. A. 
 
 199. 
 
 1017. Travis County. Bear Creek, a short distance above junction 
 
 with Onion Creek, % mile east of I. & G. N. Ry., and about 
 1 mile east of Manchaca. Sampled by G. A. P. Analyzed 
 1914 by J. E. S. B. A. 1841. [See footnote.] 
 
 1018. Travis County. About 5 miles west of Austin, and about % 
 
 mile west of the I.* & G. N. Ry., on the Dripping Springs 
 road. Sampled by G. A. P. Analyzed 1914 by J. E. S. 
 B. A. 1839. [See footnote.] 
 
 1019. Travis County. Heavy exposure in cut of I. & G. N. Ry., 
 
 about 3 % miles S. W. of Austin. Sampled by G. A. P. and 
 J. P. Nash. Analyzed 1915 by J. E. S. B. A. 2457. [See 
 footnote.] 
 
 1020. Travis County. On Austin-Manohaca road, about % mile 
 
 west of I. G. N. Ry., about 1 % miles north of Manachaca, 
 just above Slaughter Creek. Sampled by G. A. P. An- 
 alyzed 1914 by J. E. S. B. A. 1844. [See footnote.] 
 
 1021. Travis County. On Slaughter Creek, 1 mile north of Man- 
 
 chaca and about % mile west of I. & G. N. Ry. Sampled 
 by G. A. P. Anal. 1914 b^y J. B. S. B. A. 1843. [See 
 footnote. ] 
 
 Foot Note: Physical tests — hardness, toughness, etc.^-have been 
 made on this sample and are found- under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
. 56 Vniversity of Texas Bulletin 
 
 1022. Travis County. About 6 miles from Austin on upper Man- 
 chaca road, near old Oak Hill railway switch. Sampled by 
 G. A. P. Museum No. 2041. Analyzed 1914 by J. E. S. 
 B. A. 1933. [See footnote.]. 
 
 1029. Travis County. About % miles west of Manchaca, on Bear 
 Creek. Sampled by G. A. P. Museum No. 2043. Analyzed 
 1914 by J. B. S. B. A. 1935. [See footnote.] 
 
 1024. Travis County. Will Birkner's place, on tbe upper Austin- 
 
 Buda road, about 12 miles from Austin, and 1 mile west 
 of tbe I. & G. N. Ry. Museum No. 2046. Analyzed 1914 
 by J. E. S. B. A. 1937. [See footnote.] 
 
 1025. Travis County. About 1 mile north of Watters Park on the 
 
 A. So N. W. Ry., Georgetown road. Sampled by G. A. P. 
 Museum No. 2046. Analyzed by J. E. S. B. A. 1940. 
 [See footnote.] 
 102 6. Travis County. 1% miles north of Watters Park and about 
 100 yds. west of the A. & N. W. Ry. Sampled by G. A. P. 
 Museum No. 2047. , Analyzed 1914 by J. E. S. B. A. 1941. 
 [See footnote.] 
 
 1027. Travis County. Hamilton place, 8 miles N. W. of Austin, on 
 
 Burnet road. About 500 yds. west of I. & G. N. Ry. An- 
 alyzed by E. L. Porch. B. A. 1959. [See footnote.] 
 
 1028. Travis County. Hamilton place, 8 miles N. W. of Austin, on 
 
 Burnet road. About 1,000 yds. west of I. & G. N. Ry. 
 Heavy exposure. Analyzed 1914 by E. L. Porch, Jr. B. 
 
 A. 1961. [See footnote.] 
 
 1029. Travis County. B. P. Elliott. .About 8% miles N. W. from 
 
 Austin, about, 300 yds. west of the I. & G. N. Ry. Heavy 
 exposure. Sampled by G. A. P. Analyzed 1914 by J. E. S. 
 
 B. A. 1962. [See footnote.] 
 
 1030. Travis County. Frank Cheatham. About 9 miles N. W._ 
 
 from Austin and about 300 yds. west of the I. & G. N. Ry. 
 Heavy exposure. Sampled by G. A. P. Analyzed 1914 by 
 J. E. S. B. A. 1963. [See footnote.] 
 
 1031. Travis County. Bird Ranch. About 10 miles N. W. from 
 
 Austin, and about 200 yds. west of the I. & G. N. Ry. 
 Heavy exposure. Sampled by G. A. P. Analyzed 1914 by 
 J. E. S. B. A. 1964. [See footnote.] 
 
 1032. Travis County. About % mile south of Duval section house 
 
 on the I. & G. N. Ry., and about 12 miles N. W. of Austin. 
 Heavy exposure on both sides of track. Sampled by G. A. 
 P. Analyzed 1914 by J. E. S. B. A. 1965. [See footnote.] 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of T.exas Bocks and Minerals 57 
 
 1033. Travis County. From % to %, mile south of Duval section 
 
 house I. & G. N. Ry,, and about 12 miles N. W. from Austin. 
 5 ft. cut. Sampled by G. A. P. Analyzed 1914 by J. E. S. 
 B. A. 1966. [See footnote.] 
 
 1034. Travis County. On Walnut Creek, N. B. of Duval section- 
 
 house, I. & G. N. Ry. and about 12 miles N. W. of Austin. 
 Heavy exposure about 150 yds. west of railroad. Sa,mpled 
 by G. A. P. Analyzed 1914 by J. B. S. B. A. 1968. [See 
 footnote.] 
 
 1035. Travis County. J. D. Cahill. About % mile south of Mc- 
 
 Neill station. I & G. N. Ry. Heavpr exposure. Sampled 
 by G. A. P. Analyzed 1914 by J. B. S. B. A. 1969. [See 
 footnote.] 
 
 1036. Travis County. Payton Place. About 7% miles N. W. of 
 
 Austin, and about 500 yds. west of the I. & G. N. Ry. 
 Heavy exposure. Sampled by G. A. P. Analyzed 1914 by 
 J. E. S. B. A. 1970. [See footnote.] 
 
 1037. Travis County. Wilson place. About 7 miles N. W. of Aus- 
 
 tin, and 200 yds. west of the I. & G. N. Ry. Heavy ex- 
 posure. Sampled by G. A. P. Analyzed 1914 by J. E. S. 
 B. A. 1971. [See footnote.] 
 
 1038. Travis County. About 5% miles N. W. of Austin, on the 
 
 Spicewood Springs road. Sampled by G. A. P. and analyzed 
 1914 by J. E. S. B. A. 1972. [See footnote.] 
 
 1039. Travis County. Jfrom ravine west of I. & G. N. Ry. and 
 
 north of street car line to dam, near Austin. Good ex- 
 posure. Sampled by G. A. P. Analyzed 1914 by J. E. S. 
 B. A. 1973. [See footnote.] 
 
 1040. Travis County. Pease Park on east side of road, Austin. 
 
 Light exposure. Sampled by G. A. P. Analyzed 1914 by 
 J. E. S. B. A. 1975. [See footnote.] 
 
 1041. Travis County. Continuation of Pease Park road to the 
 
 north, on west side of Shoal Creek. Heavy exposure. Sam- 
 pled by G. A. P. Analyzed 1914 by J. ». S. B. A. 1976. 
 [See footnote.] 
 
 1042. Travis County. Continuation to the north of exposure on 
 
 west side of Shoal Creek, near Pease Park road, Austin. 
 Sampled by G. A. P. Analyzed 1914 by J. E. S. B. A. 1977. 
 [See footnote.] 
 
 1043. Travis County. Prom W. E. McNeese place, about 4 miles 
 
 south of Round Rock, on the Georgetown-Round Rock road, 
 about 1 mile east of A. & N. W. Ry. Sampled by G. A. P. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
58 University of Texas Bulletin 
 
 Museum No. 2049. Analyzed 1814 by J. E. S. B. A. 1943. 
 [See footnote.] 
 
 1044. Travis County. About 8 miles south of Austin on the Man- 
 
 chaca road. Sampled by G. A. P. Museum No. 2042. An- 
 alyzed 1914 by J. E. S. B. A. 1934. [See footnote.] 
 
 1045. Williamson County. From G. A. Burkman's place', about % 
 
 mile south and east of I. & G. N: Ry., and % mile south- 
 east of Round Rook. Sampled by G. A. P. Analyzed 1914 
 by J. E. S. B. A. 1946. [See footnote.] 
 
 1046. Williamson County. From 1 to 1% miles south of Round 
 
 Rock, on main line I. & G. N. Ry. and McNeill wagon road. 
 Heavy surface exposure. Sampled by G. A. P. Analyzed 
 1914 by J. E. S. B. A. 1950. [See footnote.] 
 
 1047. Williamson County. On George John's ranch, about 3 miles 
 
 S. W. of Round Rock near main line I. & G. N. Ry. Heavy 
 exposure in pasture. Sampled by G. A. P. Analyzed 1914 
 byJ. E. S. B. A. 1951. [See footnote.] 
 
 1048. Williamson County. On right of way of I. & G. N. Ry., 
 
 quarry 1 mile north of McNeill, but in Williamson County. 
 Light exposure. Sampled by G. A. P. Analyzed 1914 by 
 J. E. S. B. A. 1952. [See footnote.] 
 
 1049. Williamson County. Forstman place, about 1% miles east 
 
 of Round Rock, on Lake Brushy Creek, and about 300 yds. 
 S. E. of watertank on I. & G. N. Ry. main line. Lower 
 stratum. Heavy exposure. Sam:^led by G. A. P. Analyzed 
 1914 by E. L. Porch. B. A. 1954. [See footnote] 
 
 1050. Williamson County. Otto Granzert — W. J. Fouse pit. About 
 
 2 miles east of Round Rock on I. & G. N. Ry., main line. 
 Heavy exposure. Sampled by G. A. P. Analyzed 1914 by 
 E. L. Porch, Jr. B. A. 1955. [See footnote.] 
 
 1051. Williamsoh County. Merrill property. About 1% miles east 
 
 of Round Rock, about 300 yds. west of I. & G. N. Ry. main 
 line. Near Pouse's pit. Heavy exposure. Sampled by G. 
 A. P. 'Analyzed 1914 by E. L. Porch, Jr. B. A. 1957. 
 [See footnote.] 
 
 1052. Wise County. Sample received from Gouswitz, Ft. Worth and 
 
 Denver City Ry., marked "From Alvord, Wise County." 
 Analyzed 1915 by J. E. S. B. A. 2170. [See footnote.] 
 
 1053. Wise County. 3 % miles south of Chico. Analyzed 1914 by 
 
 J. E. S. B.- A. 1448. 
 
 1054. Wise County. Sample from Chico, Tekas. Analyzed 1914 by 
 
 J. E. S. B. A. 1532. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Chemical Analyses of T.exas Rocks and Minerals 59 
 
 105 5. Wise County. Sample from Bridgeport. Analyzed 19 12 by 
 S. H. W. B. A. 285. 
 
 1056. Wise County. Sample of limestone from Bridgeport. An- 
 
 alyzed 1912 by S. H. W. B. A. 284. 
 
 1057. " Wise County. Sample from Bridgeport. Analyzed 1912 by 
 
 S. H. W. B. A. 283. 
 
 1058. Wise County. Sample from Bridgeport. Analyzed 1912 by 
 
 S. H. W. B. A. 285. 
 
 1059. Wise County. Sample Chico Crushed Stone Co., Chlco. 
 
 Tested by the U. S. Office of Public Roads, Washington, D. 
 C, under their number 1927. Univ. Mus. No. 6684. An- 
 alyzed 1914 by B. L. Porch, Jr. B. A. 1850. 
 
 1060. Wise County. Sample from Chico Crushed Stone Co., Chioo. 
 
 U. T. B. 365, p. 252. 
 
 1061. Wise County. Exact locality of sample not stated. Tested 
 
 as road material by the U. S. Office of Public Roads, Wash- 
 ington, D. C, under their No. 7242. Univ. Mus. No. 1928. 
 Analyzed by E. L. P. B. A. 1851. 
 
 VII. DOLOMITE 
 
 Note on Cmposition, Peopeeties, and Occueeence. — Dolo- 
 mite is a double carbonate of calcium and magnesium, which 
 contains, in its typical form^ 54.34% of calcium carbonate and 
 45.66% of magnesium carbonate. It occurs not only as a min- 
 eral, but as a rock, and since the two carbonates are isomorphous. 
 the proportion of magnesium carbonate may be much less than 
 45.66%, so that many dolomites are merely magnesium lime- 
 stones. 
 
 If magnesian limestones are calcined below red heat, only 
 the magnesium carbonate is decomposed while the calcium car- 
 bonate remains unchanged. On slacking the product, the caustic 
 magnesia forms a hydrate, which acts as a binder to the calcium 
 carbonate, and the mass behaves like a hydraulic cement which 
 is particularly resistant to the action of water. 
 
 Magnesian limestones which contain some argillaceous matter 
 (clay) have been burned successfully to hydraulic cement. 
 
 Dolomite is used extensively to make Epsom salts, and to 
 make the basic lining for the Thomas and Gilchrist method of 
 making steel. 
 
 Dolomite and dolomitic limestones occur chiefly in the Cam- 
 brian, Ordovician and Permian rocks of this State. The Cam- 
 
60 University of T^exas Bulletin 
 
 brian and Ordovician contain both limestones and dolomites. 
 The dolomites occur mostly in the lower part of the Ellenburger 
 formation in the Central Mineral Eegion. This is a compact 
 and hard rock which is probably our best limestone for road 
 construction and for crushed rock in concrete. The Montoya 
 limestone of the Ordovician and the Fusselman limestone of the 
 Silurian are likewise dolomites, or at least are. more or less dolo- 
 mitie. In the Ord, the Glass and the Delaware Mountains and 
 on the plains east of the Llano Estaeado, we have great beds of 
 Permian dolomites. Some of these limestones measure several 
 hundred feet in thickness in the Glass Mountains. Dolomites 
 are rare in formations of other ages. A few layers in the 
 Georgetown limestone of the Comanchean contain from 5 to 15 
 or 16 per cent of magnesia. These occur in Williamson and 
 Travis Counties and in several counties farther to the west. 
 
 Anal. No. 
 
 1062. Burnet County. Mus. No. 1319. Marked "Five miles south 
 
 of Bertram." Analyzed 1914 by J. E. S. B. A. 1673. 
 
 1063. Burnet County. . Mus. No. 1324, marked "Spring Creek, Bur- 
 
 net County." Analyzed 1914 by J. E. S. B. A. 1622. 
 
 1064. Burnet County. Heavy exposure on land of Reed Yett, about 
 
 half a mile south of A. & N. W. Ry., and about 1 % miles 
 S. E. of Fairland. Sampled by G. A. P. Analyzed 1914 
 by J. E. S. B. A. 1805. [See footnote.] 
 
 1065. Burnet County. Reed Yett. About 200 yds. south of Fair- 
 
 land, east of Reed Yett's ranch house, very heavy expos- 
 ure. Sampled by G. A. P. Analyzed 1914 by 3. E. S. B. 
 A. 1810. [See footnote.] 
 
 1066. Burnet County. Reed Yett. About % mile east of A. & N 
 
 W. Ry., and about 5 miles, N. E. of Fairland. On Honey 
 Creek, below bridge. Heavy exposure. Sampled by G. A. 
 P. Analyzed 1914 by J. E. S. B. A. 1812. [See footnote.] 
 
 1067. Burnet County. Reed Yett. About % mile east of A.' & N. 
 
 W. Ry., and about 5 miles east of Fairland. Below bridge 
 on Honey Creek. Heavy exposure. Sampled by G. A. P. 
 Analyzed 1914 by J. E. S. B. A. 1814. [See footnote.] 
 
 1068. Burnet County. R. H. Hoover. About a mile east of A. & 
 
 N. W. Ry., and about '6 miles east of Fairland, about % 
 mile down Hamilton Creek from pumping station, east side 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
Ghemicai Analyses of Texas Bocks and Minerals 61 
 
 of creek. Heavy exposure. Sampled by G. A. P. Analyzed 
 1914 by J. E. S. B. A. 1818. [See footnote.] 
 
 1069. Burnet County. R. H. Hoover. Immediately on track of 
 
 A. & N. W. Ry., west side of Delaware Creek, and about 
 6 miles east of Fairland. Heavy exposure. Sampled by 
 G. A. P. Analyzed by J. E. S. B. A. 1819. [See footnote.] 
 
 1070. Burnet County. Bryant Ranch. About % mile down Ham- 
 
 ilton Creek below Holland Spring, at the point where the 
 Holland Branch empties into Hamilton Creek. About % 
 mile east of A. & N. W. Ry., and about 3 miles south of 
 Burnet. Heavy exposure. Sampled by G. A. P. Analyzed 
 1914 by J. E. S. B. A. 1824. [See footnote.] 
 
 1071. Burnet County. Reed Yett. About % mile up Honey Creek 
 
 from A. & N. W. Ry. bridge. About Vi mile west of track, 
 and about 5 miles east of Fairland. Heavy exposure. Sam- 
 pled by G. A. P. Analyzed 1914 by J. E. S. B. A. 1828. 
 [See footnote.] 
 
 1072. Burnet County. Reed Yett. About % mile up Honey Creek 
 
 from crossing of the A. & N. W. Ry. and about % mile west 
 of the track. About 5 miles east of Fairland. Heavy ex- 
 posure. Sampled by G. A. P. Analyzed 1914 by J. E, S. 
 
 B. A. 1829. [See footnote.] 
 
 1073. Burnet County. Dave Holland's place. About a mile south 
 
 of the A. & N. W. Ry. and about 1 % miles S. E. of Fair- 
 land. Heavy exposure. U. T. B. 365, p. 84. 
 1074.1 El Paso County. Dolomite samples from A. Courchesne, El 
 1075.1. Paso, Texas. Analyzed by S. H. W. B. A. 663, 664 and 
 1076. J 665, respectively. 
 
 1077. Gillespie County. Magnesian limestone from Willow City. 
 
 U. T. B. 365, p. 128. 
 
 1078. Gillespie County. From Bell Mt. Analyzed 1914 by J. E. S. 
 
 B. A. 1681. 
 10^9. Gillespie County. From Crab Apple Creek. Analyzed 1914 
 by J. E. S. B. A. 1682. 
 
 1080. Gillespie County. From Grape Creek. Analyzed 1914 by 
 
 J. E. S. B. A. 1689. 
 
 1081. Gillespie County. Prom Huson Mountain. Analyzed 1914 by 
 
 J. E. S. B. A. 1906. 
 
 1082. Gillespie County. From Nebo Mt. Analyzed 1914 by J. B. 
 
 S. B. A. 1910. 
 
 1083. San Saba County. Museum No. 721, marked "Cherokee 
 
 Creek, San Saba County." Analyzed 1914 by J. B. S. B. 
 A. 1620. 
 
 Foot Note: Physical tests — hardness, toughness, etc. — have been 
 made on this sample and are found under the same B. A. Number 
 in University of Texas Bulletin 62 on Road Material of Texas. 
 
62 University of Texas Bulletin 
 
 1084. Tom Green County. Mus. No. 698, marked "Ben Ficklin, 
 
 Tom Green County." Analyzed 1914 by J. E. S. B. A. 
 1658. 
 
 1085. Travis County. Exact location can be ascertained from or- 
 
 iginal source. Analyzed by S. H. W. T. M. S. A. No. 1247. 
 1086. 1 Travis County. Analyzed by O. H. Palm. Partial. T. M. 
 1087. 1 S. A. Nos. 3434 and 3435, respectively. 
 
 1088. Williamson County. Sample received from W. L. Vining, 
 
 Austin, marked "D. McRae, Cedar Park, Williamson Coun- 
 ty." Analyzed 1913 by S. H. W. B. A. 553. 
 
 1089. Williamson County. Sample received from J. R. King, 
 
 Austin, March, 1913, from near Cedar Park. Analyzed 
 1913 by S. H. W. B. A. 623. 
 
 1090. Williamson County. Sample received from J. R. King, Aus- 
 
 tin, marked "A mixture of ^e samples representing seven 
 feet of material about 2 ifllles south of Cedar Park." An- 
 alyzed 1913 by S. H. W. B. A. 830. 
 
 Vni. KAOMN 
 
 Introductory Note. — Kaolin is essentially a hydrated aliim- 
 inum silicate. In its purest form it contains 46.5% silica, 
 39.5% alumina, 14% water. 
 
 As kaolin, we have classified certain deposits of mostly white 
 clays, rich in alumina. They are in, some cases to he strictly 
 separated from higher grades of ordinary or potters' clay, as in 
 the ease of the kaolin from Real County. This deposit is Re- 
 lieved to be a result of chemical precipitation. In the case of 
 the other kaolins, the name is merely an indication of fine plasiic 
 qualities and tiuitability for use in the manufacture of potlery 
 ware. Se? Nrr.i on day, shale, and marl. 
 
 Anal. No. 
 
 1091. Culberson County. Sample from Dr. J. A. Udden, marked 
 
 "The Conder Cut Plateau No. 3, about 3 miles west of 
 Boracho." Analyzed 1913 by S. H. W. B. A. 960. 
 
 1092. Edwards County. Cleaned and ground kaolin from the mill 
 
 at Godbald's house, near Leaky. Analyzed 1913 by J. B. S. 
 B. A. 584. 
 
 1093. Edwards County. Analyzed 1890 by Dr. Everhardt of the Uni- 
 
 versity of Texas. T. G. S. A. R. II, p. LI. 
 
 1094. Edwards County. Ground but not cleaned kaolin from mill 
 
 at Godbald's house near Leaky. Analyzed 1913 by J. E. S. 
 B. A. 585. 
 
Chemical Analyses of Texas Bocks and Minerals 63 
 
 1095. Uvalde County. From Thornton's ranch 15 miles north of 
 
 TlTalde, from hole alongside creek In Arroyo. Sampled by 
 B. L. P., Jr. Analyzed 1914 by S. H. W. B. A. 1440. 
 
 1096. Uvalde County. Fifteen miles north of Sabinal on the Big 
 
 Blanco Creek. Sample received by Univ. Bur. Ec. Geol. 
 from Russell Myrick, San Antonio. Analyzed 1914 by J. 
 E. S. B. A. 1268. 
 
 IX. SALT 
 
 Note on Occurrence. — Few complete analyses of salt have 
 been made which show true composition of the salt as it occurs 
 in natural deposits. Our great salt deposits are in the Llano Es- 
 taeado and in the Panhandle. In the Permian sediments of this 
 part of the State all ratios of mixtures exist, from salt-bearing 
 sand to sand-bearing salt. Most analyses made bear on the re- 
 lation of potash salts to the common salt, but all of these have 
 been presented under the heading of Potash (Nos. 3099-3122.) 
 
 Anal. No. f 
 
 1096a. Culberson County. Prom a lake north of Van Horn. Sent 
 
 by J. A. Martin, Jr., Toyah. Analyzed 1918 by T. W. Ray. 
 
 No. C637. 
 
 1097. El Paso County. Common salt from El Capitan Peak. An- 
 
 alyzed by S. H. W. T. M. S. B. 9, p. 63. 
 
 1098. El Paso County. From Salt Draw. Analyzed 1904 by S. H. 
 
 W. T. M. S. A. No. 2739. 
 
 1099. Pecos County. North of Van Horn, 15 miles S. W. of El 
 
 Capitan, and west of Salt Basin. Analyzed by S. H. W. 
 T. M. S. B. 9, p. 62. 
 
 1100. Smith County. Salt from Tyler. T. M. S. A. No. 1431. 
 
 X. ANHYDRITE 
 
 Introductory Note. — Anhydrite is a crystallized calcium sul- 
 phate without water of crystallization, and differs from gypsum 
 only in the fact that the latter contains water according to the 
 formula, CaSO^, 2H2O. 
 
 Anhydrite is a crystallized calcium sulphate without water of 
 crytallizatjon, and differs from gypsum only in the fact that the 
 latter contains water according to the formula, CaSO^, 2H2O. 
 
 Anhydrite occurs as a primary deposit associated with the 
 salt beds in the Permian beds of the Llano Estacadb. It occurs 
 
64 University of Texas Bulletin 
 
 secondarily in the salt domes of the coast and in the salines of 
 Northeast Texas. The analyses presented represent a body of 
 anhydrite present in a dome-like structure near Brenham. An- 
 hydrite has not been found exposed. Our anhydrite beds have 
 evidently been changed by hydration tO' gypsum in the western 
 part of the State, to the depth of several hundred feet. 
 
 Anal. No. 
 
 1101. Washington County. Sample of anhydrite from well No. 4, 
 
 Brenham Oil Co., Brenham. Depth 1366 feet. Analyzed 
 
 1916 by J. E. S. B. A. 2937. 
 
 XI. KTOVAOUMTE 
 
 Note on Composition,. Use, and Occurrenoe. — This is a fine 
 grained, siliceous compact rock used for oil stones for sharp- 
 ening delicate instruments and edged tools. Arkansas has been 
 the main commercial source of this stone in the United States. 
 
 Some heavy flint beds occurring in the Paleozoic rocks of the, 
 Marathon region probably have the same origin as the novaeu- 
 lite in Arkansas. They are pure siliceous beds which yet con- 
 tain preserved entire tests of radiolarians, from which apparent- 
 ly the entire deposits have been formed in the seas in which they 
 were originally laid down. 
 
 Anal. No. 
 
 1102. 
 1103. 
 1104. 
 1105. 
 
 Brewster County. Four samples of novaculite from one 
 mile south of Haymond. Received from C. L. Baker. An- 
 alyzed, 1915 by J. E. S. B. A. 2751, 2752, 2753 and 2754, 
 respectively. 
 
 XI. PHOSPHATIC ROC?KS 
 
 Note on Occureencb. — ^No workable deposits of phosphatic 
 rocks have so far been found in this State. In the Ordovieian 
 limestones of the' Marathon region some layers containing small 
 fossil cyclora have been found to contain a considerable ingre- 
 dient of phosphate of lime. Some shelly marls, in the Tertiary- 
 have shown a few percent of phosphatic material. Phosphate' 
 occurs in small amount in the Wichita beds of the Permian, 
 where it evidently has been derived from the attrition of the 
 
Chemical Analyses of T:exas Bocks and Minerals 65 
 
 skeletal parts of fishes and amphibians. Some greensands also 
 carry a little phosphate in the Tertiary and in the Cretaceous 
 rocks. 
 Anal. No. 
 
 1106. Bexar County. Small phosphatlc pebbles, received from F. 
 
 R. Newton, San Antonio, marked "Picked up on surface at 
 deposit of phosphatlc greensand on Leon Creek, about 1% 
 mile south of bridge on Castroville road." Analized 1914 
 byj. E. S. B. A. 2006. 
 
 1107. Brewster County. Phosphate rock near Agua Fria. Analyzed 
 
 1902 by S. H. W. T. M. S. A. No. 1914. 
 1108."| Brewster County. Partial analyses for phosphorus pentoxlde. 
 1109.!- 16 miles from Marathon. T. M. S. A. No. 3222 and 3223, 
 
 respectively. 
 Bexar County. Seven miles west of San Antonio on Leon 
 
 Creek. Sampled by W. B. Phillips. Analyzed 1902 by O. 
 
 H. Palm of the University of Texas Mineral Survey. T. M. 
 1110. S. A. No. 1559, 1560, 1561, 1562, 1563, 1564, 1565, 1566, 
 to L 1567, 1568, 1569, respectively. Partial analyses for phos- 
 1120. phorus pentoxlde and bone phosphate. Samples taken at 
 
 intervals of 1 foot to a depth of ten feet. No. 1569 consists 
 
 of limestone below white nodules and above dark green 
 
 rock. 
 
 Xm. ASPHAIiT ROCK 
 
 Note on Occurrence. — Rock impregnated with asphalt occurs 
 chiefly in tvro horizons in this State. Asphalt is found in sand- 
 stones and limestones of the Comanchean in Cooke and Burnet 
 Counties. In Uvalde County it occurs in the Anacacho lime- 
 stone, which in some localities is very porous, being essentially a 
 shell breccia in which the porosities have been filled with asphalt. 
 Asphalt has also been found impregnating Eocene Tertiary sand- 
 stones as in Anderson County. Sea-wax is a substance found on 
 the Gulf beach, evidently a residue from evaporated oil on the 
 waters of the Gulf, drifted by the winds to the shore. It is from 
 white to black in color and may be either chiefly asphalt or 
 chiefly a parafSn-like substance. 
 
 Anal. No. 
 
 1121. Anderson County. Asphalt rock from Chepal Well. Ana- 
 
 alyzed by O. H. Palm and S. H. W. T. M. S. B. 3, p. 87. 
 
 1122. Anderson County. From Hassell's Well. Analyzed by O. 
 
 H. P. and S. H. W. T. M. S. B. 3, p. 87. 
 
66 University of Texas Bulletin 
 
 1123. Anderson County. From Brule's Hole. Analyzed by O. H. P. 
 and S. H. W. T. M. S. B. 3, p. 87. 
 
 1124. Burnet County. From Port Mountain, 1% miles west of 
 
 Burnet. Sundried for several years. Analyzed by O. H. P. 
 T. M. S. A. No. 1061. 
 
 1125. Burnet County. From Post Mt. 1% miles west of Burnet. 
 
 Analyzed by O. H. P. T. M. S. A. No. 1066. 
 
 1126. Burnet County. Marked "Burnet County, No. 3" and sent in 
 
 to the Lab, of the Univ. of Tex. Min. Survey by J. D. Mc- 
 Dowell of Austin. Analyzed 1901 by O. H. P. T. M. S. A. 
 No. 1113. 
 
 1127. Cooke County. From land of Thos. Hoover, 6% miles east 
 
 of south of St. Jo. The Muenster Field. T. M. S. A. 3, 
 p. 82-83. 
 
 1128. Cooke County. Same locality as No. 1127, sample analyzed 
 
 before heating. ' 
 
 1129. Cooke County. Same locality, sample analyzed after heating. 
 
 1130. Copke County. Prom land of Widow Patton, near Thos. 
 
 Hoover, the asphalt bed exposed in bed of small stream. 
 (Before heating.) Analyzed 1901. T. M. S. B. 3, p. 83. 
 
 1131. Cooke County. Same locality as No. 1130, but analysis was 
 
 made after heating. 
 
 1132. Cooke County. Prom Roemer's 1% miles west of Muen- 
 
 ster. (Before heating.) ^ 
 
 1133. Cooke County. Same as No. 1132, but anlysis was made after 
 
 heating. 
 
 1134. Jasper County. From old tar well near Rockland. An- 
 
 alyzed by O. H. Palm 1904. J. W. S. B., Dec. 1904, p. 585. 
 
 1135. Jefferson County. Sample of sea-wax, obtained on coast of 
 
 County, from beach due north of oil pond. Analyzed by 
 Dr. A. L. Metz of Tulane Univ. T. il. S. B. 1, p. 23. 
 
 1136. Montague County. Asphaltic sandstone sample submitted to 
 
 Min. Surv. Lab. by A. L. Scott. Sampled at Owens' place, 
 2 miles north of St. Jo, 1 % miles south of Sampson Ridge. 
 T. M. S. B. 3, p. 82. 
 
 1137. Montague County. Prom R. F. Sampson's ranch, sample 
 
 sent in by A. L. Scott of St. Jo. Analyzed by O. H. P. 
 T. M. S. A. No. 1111. 
 
 1138. Montague County. From W. J. Ray's ranch. Sample sent in 
 
 by A. L. Scott of St. Jo. Analyzed 1901 by O. H. P. T. 
 M. S. A. No. 1112. 
 
 1139. Montague County. From the limestone boulder in the as- 
 
 phalt rock at the north point of Sampson's Ridge, 3% 
 miles N. B. of St. Jo. ' Called "Limestone asphalt." An- 
 alyzed 1901 by O. H. P. T. M. S. A. No. 1197. 
 114e. Montague County. From north point of Sampson Ridge, 5% 
 
Chemical Analyses of Texa^ Bocks and Minerals 67 
 
 miles east of north of St. Jo, first foot from the bottom. 
 T. M. S. B. 3, p. $1. 
 
 1141. Montague County. Same locality, second foot from the bot- 
 
 tom. See under No. 1140. 
 
 1142. Montague County, Same locality as No. 1140, taken at 
 
 depth of 2 ft. 8 in. 
 
 1143. Uvalde County. Sample from deposit near Cline, Texas, sent 
 
 to Lab. of U. T. Min. Surv. by Uvalde Asphalt Co., Car- 
 
 bonville. Marked "Powdered Asphalt rock." Analyzed 
 1902 by O. H. P. T. M. S. A. No. 1600. 
 
 1144. Uvalde County. W. P. May's ranch at Waxy Falls on 
 
 Nueces River, 12 miles west of south from Uvalde. "Car- 
 boniferous bituminous sandstone." U. T. B. 365, p. 235. 
 
 1145. Uvalde County. Sand asphalt. May's ranch, middle bed. An- 
 
 alyzed by O. H. P. 1901. T. M. S. A. File 5-A. 
 114S. Uvalde County. Mottled rock from Smyth-Nunn ranch, Car- 
 bon ville. Sent in by the Parker-Washington Co., San An- 
 tonio. Analyzed 1901 by O. H. P. ' T. M. S. A. File 5-A. 
 
 1147. Uvalde County. Sand asphalt. May's ranch, lower bed. An- 
 
 alyzed 1901 by O. H. P. T. M. S. A. File No. 5-A. 
 
 1148. Uvalde County. Uvalde County Asphalt Co. 's rock. Analyzed 
 
 1901 by O. H. P. T. M. S. A. File No. 5-A. 
 
 1149. Uvalde County. Sample of close-grained asphalt rock, re- 
 
 sembling No. 1145, from Smyth-Nunn ranch, Carbonville. 
 Sent in by Parker-Washington Co., of San Antonio. An- 
 alyzed 1901 by O. H. P. T. M. S. A. File 5-A. 
 
 1150. Uvalde County. Asphalt rock, bituminous limestone, near 
 
 Carbonville. 20 feet thick, overlaid by 2-4 feet of lime- 
 stone. Easily accessible by Southern Pacific Ry. J. W. 
 S. E. Dec, 1914, p. 585. 
 
 1151. Wise County. Bituminous rock from Decatur. Analyzed by 
 
 J. B. S. B. A. 2448. 
 
 B. IGNEOUS EOCKS 
 
 Inteductory Note. — Igneous rocks occur mostly in the Trans- 
 Peeos country in this State. These are of late Creta- 
 ceous and early Tertiary age. They are prevailingly 
 of the acidic type. Some ancient volcanic rocks are 
 exposed in the Central Mineral Eegion, where they occur as 
 intrusives in pre-Cambrian schists and gneisses. Igneous rocks 
 occur also in the Baleones Escarpment in a belt extending from 
 Dallas to San Antonio and from San Antonio to Del Rio. 
 
 The samples marked "sent by Baker" were collected by 
 
68 University of Texas Bulletin 
 
 Messrs. C. L. Baker arid W. F. Bowman in a re^on described 
 in University of Texas Bulletin 1753, and the sources of these 
 samples, have been designated here by giving their latitudes and 
 longitudes on the "Geological Map of a Part of the Front Range 
 in Trans-Peeos Texas", — -which is a part of Bulletin 1753. The 
 lithologieal characters of the samples were obtained from private 
 memoranda of Mr. Bowman. 
 
 A number of the analyses given below were obtained from 
 U. S. G. S. Bulletin 591, and since the minerological examina- 
 tion of these sampled was particularly extensive, the descrip- 
 tions of these are reproduced here in full. 
 
 Anal. No. 
 
 1161. Brewster County. Basaltic lava. Found at Lat. 29° 39' N., 
 
 Long. 102° 57' W. Sent by Baber. Analyzed 1916 byi L. 
 A. M. and W. A. F. B. A. No. C332. 
 
 1162. Brewster County. Basaltic lava. Found at Lat. 29° 45' N., 
 
 Long. 102° 55' W. Sent by Baker. Analyzed 1916 by L. A. 
 M. and W. A. F. B. A. No. C334. 
 
 1163. Brewster County. Basaltic lava. Found at Lat. 29° 46' N., 
 
 Long. 102° 55' W. Sent by Baker- Analyzed 1916 by 
 J. E. S. B. A. No. C338. 
 
 1164. Brewster County. Basaltic lava. Foot of hill at Lat. 
 
 29° 48' N., Long! 102° 58' W. Sent by Baker. Analyzed 
 1917 by J. B. S. B. A. No. C357. 
 
 1165. Brewster County. Basaltic lava. Found at Lat. 29° 47' 
 
 N., Long. 102° 52' W. Sent by Baker. Analyzed 1916 
 by L. A. M. and W. A. F. B. A. No. 0323. 
 
 1166. Brewster County. Basaltic lava. Found at Lat. 29° 48' 
 
 N., Long. 102° 58' W. Sent by Baker. Analyzed 1917 
 
 J. E. S. B. A. No. C339. 
 1168. Brewster . County. Basaltic lava. Found at Lat. 29° 46' 
 
 N., Long. 102° 58' W. Sent by Baker, Analyzed 1917 
 
 by J. E. S. B. A. No. C354. 
 1171. Brewster County. Basaltic lava. Found at Lat. 29° 49' 
 
 N., Long 102° 56' West. Sent by Baker. Analyzed 1917 
 
 by J. E. S. B. A. No. C355. 
 1173. Brewster County. N. end of basalt-flow between northern 
 
 Sierra del Carmen and Canyon of Maravillas Creek. Sent 
 
 by Baker. Analyzed 1917 by\ J. B. S. B. A. No. C359. 
 1176. Brewster County. Basaltic lava flow. Found at Lat. 19° 
 
 46' N., Long. 102° 52' W. Sent by Baker. Analyzed by 
 
 J. E. S. 1916. B. A. No. C340. 
 1178. Brewster County. Chisos Tufts. From exposures in the 
 
Cheniicjil Analyses of T,exas Bocks and Minerals 69 
 
 hills south of Ward's Spring near the Chisos M6unt?iins. 
 Analyzed by O. H. P. U. T. B. p. 62. , 
 
 1180. Brewster County. Intrusive Syenite. Found at Lat. 29° 
 
 50' N., Long. 103° 2' W. Sent by Baker. Analyzed 1916. 
 
 1181. Brewster County. Intrusive Syenite. Found at Lat. 29° 
 
 50' N., Long. 103° W. Sent by Baker. Analyzed 1916 
 by L. A. M. and W. A. F. B. A. No. C336. 
 
 1182. Brewster County. Basaltic lava. Found at Lat. 29° 48' N., 
 
 Long. 102° 59' W Sent by Baker.- Analyzed by L. A. M. 
 and W. A. F. B. A. No. C339. 
 
 1183. Brewster County. Intrusive Syenite. Found at Lat. 29° 
 
 . 50' N., Long. 102° 49' W. Sent by Baker. Analyzed 
 1916 by J. E. S. B. A. No. 337. 
 
 1185. Brewster County. Basaltic Lava Flow. Lat. 29° 47' N., 
 
 Long. 102° 52' W. Sent by Baker. Analyzed 1916 by 
 L. A. M. and W. A. F. B. A. No. C34i. 
 
 1186. Brewster County. Intrusive from Elephant Mountain. Lat. 
 
 30° 1' N., Long. 103° 32' W. Sent by Baker. Analyzed 
 1916 by L. A. M. and W. A. F. B. A. No. C322. 
 
 1187. Brewster County. Intrusive Syenite 2% miles west of 
 
 Capt James Ranch, Alpine Sheet. Lat. 30° 18' N., Long. 
 103° 31' W. Sent by Baker. Analyzed 1916 by L. A. 
 M. and W. A. F. B. A. No. C325. 
 1'188. Brewster County. Intrusive Syenite. Found at Lat 29° 
 52' N., Long. 103° 13' W. Sent by Baker. Analyzed 
 
 1916 by J. E. S. B. A. No. C349. 
 
 1189. Brewster County. Sample undeftermined. From Broad 
 
 flat between Santiago Range and Henderson's Ranch. 
 Sent by Baker. Analyzed 1917 by J. E. S. B. A. No. 
 C351. 
 
 1190. Brewster County. Peconite. From Paisano Peak. Lat. 
 ' 30° 18' N., Long. 103° 46' W. Sent by Baker. Analyzed 
 
 1917 by J. B. S. 5. A. No. C353. 
 
 1191. Brewster County. Intrusive Syenite. Prom Santiago Peak. 
 
 Lat. 29° 51' N., Long. 103° 26' W. Sent by Baker; 
 Analyzed 1916 by J. E. S. B. A. No. C348. 
 
 1192. Brewster County. Sample undetermined. From Chalk 
 
 Valley, Alpine Sheet. Sent by Baker. Analyzed 1917 by 
 J. E. S. B. A. No. C358. 
 
 1193. Brewster County. Pulaskite, Santiago Mountain. Nordr 
 
 markose. Consists of alkali feldspars, with subordinate 
 aegirite, aegirite-auguite, riebeckite, magnetite, and rare 
 lovenite. Sp. gr., 2.581, 25.5°. 
 
 1194. Brewster County. Extrusive igneous! From "Just south 
 
 of S. P. rightof-way, % mile east of Strobel Switch, 
 Alpine Sheet". Sent by Baker. Analyzed 1916' by L. A. 
 
 1\T ar^A W A ■P Tl A Mn nSSK 
 
70 University of Texas Bulletin 
 
 1196. Brewster County. Sample undertermined* Between summit 
 of Santiago Range and Santiago Peak. Sent by Baker. 
 Analyzed by J. E. S. B. A. No. C356. 
 
 1198. Brewster County. Sample undetermined. From 3 miles 
 
 west of Capt James' Ranch, Alpine Sheet. Lat. 30° 18' 
 N., Long. 103° 31' W. Sent by Baker. Analyzed 1916 
 by J. E. S. B. A. No. C344. 
 
 1199. Brewster County. Sample undetermined. Prom 2% 
 
 .miles S. E. Qf Horse Mountain. Lat. 30° 2' N., Long. 103° 
 8' W. Sent by Baker. Analyzed by J. E. S. B. A. No. 
 C346. 
 
 1201. Brewster County. Syenite porphyry, Iron Mountain, near 
 
 Marathon. Nordmarkose. Contains many oligoclase- 
 albite phenocrysts in a groundmass of alkali feldspar, with 
 very little quartz. Titanite, apatite, and magnetite 'are 
 present in small amounts. Sp. gr., 2.577, 15.5°. 
 
 1202. Brewster County. Intrusive rock. From N. W. side of 
 
 Altruda Mts., Alpine Sheet. Sent by Baker. Analyzed 
 1917 by J. E. S. B. A. No. 'C350. 
 
 1203. Brewster County. Grorudite, about 2 miles of the summit 
 
 of Chisos Mountain. Grorudoseipantellerose. Contains 
 alkali feldspars and subordinate quartz, with riebeckite 
 and aegirite in irregular interstitial patches. Sp. gr., 
 2.648, 15.5°. 
 1210. Brewster County. Rhyolite. From Madera Canyon. Sent 
 by Baker. Analyzed 1916 by J. E. S. B. A. No. C342. 
 
 1218. Brewster County. Rhyolite, west :o^ Paisano Mountain, 
 
 Alpine quadrangle. IJIparose. Contains alkali feldspars, 
 quartz arfvedsonite, and aegirite. Sp. gr. 2.635, 15.5°. 
 
 1219. Brewster County. Rhyolite, north summit of Chisos Moun- 
 
 tain, tiparose. Consists chiefly of alkali feldspars and 
 quartz, with riebeckite and a little magnetite. Sp. gr, 
 2.611, 15.5°. 
 
 1221. Brewster County. Sample undetermined. Just north of 
 
 Dog Canyon and just east of junction of Dog Canyon with 
 Maravillas. Sent by Baker. Analyzed 1916 by/ J. E. S. 
 B. A. No. C347. 
 
 1222. Brewster County. Rhyolite, summit of Chisos Mountain, 
 
 Big Bend of the Rio Grande. Liparose n^r alaskose. 
 
 Pink porphyry. Rich in alkali feldspars and quartz, with 
 
 very little riebeckite and harkevikite (?). Sp. gr., 2.602, 
 
 15.5°. 
 12 26. Brewster County. Lava. From 3 miles north of Elephant 
 
 Mountain. Lat. 30° 1' N., Long. 103° 31' W. (Sent by 
 
 Baker. Analyzed by J. E. S. B. A. No. C343. 
 1216. Burnet County. Coarse red granite. 'From old Hoover 
 
 Quarry, east side of Colorado River. Used in Tarrant 
 
Chemical Analyses of Texas Bocks and Minerals 71 
 
 County Courtliouse. Sampled by W. B. Phillips and G. 
 
 A. P. Aug., 1914. Analyzed by J. E. S. B. A. 1800. 
 
 1227. Burnet County. Schist. From 6 miles S. W. of Burnet. 
 
 Analyzed 1904 by O. H. P. U. of T. M. S. No. 2833. 
 
 1228. Burnet County. Schist. From 6 miles N. W. of Burnet 
 
 Analyzed 1904 by O. H. P. U. of T. M. S. No. 2882. 
 1197. El Paso County. Andesite Porphyry from south end of 
 main outcrop of rock in the city of Bl Paso. Analyzed by 
 
 B. C. Sullivan. U. S. G. S. Folio 166 p. 7. 
 
 1200. El Paso County. Syenite porphyry, Hueco Tanks, Phlegrose 
 
 near nordm^rkose. Collected and described by G. B. 
 Richardson. Contains orthoclase, albite, oligoclaae, biotite, 
 augite, quartz, ilmenite, magnetite, and apatite. Analysis 
 by G. Steiger, record No. 2162. P. R. C. 1667. 
 
 1201. El Paso County. Syenite Porphyry. From Hueco Tanks. 
 
 Collected by G. B. Richardson. V. S. G. S. B. 591, p. 60. 
 
 1214. Bl Paso County. Granite. From one of the ten prospects 
 12 miles north of El Paso. Analyzed by B. C. Sullivan. 
 U. S. G. S. folio No. 166, p. 7. 
 
 12 23. El Paso County. Phyolite Porphyry. From central part 
 of the summit of Franklin Mountains. El Paso Quad- 
 rangle. Analyzed by B. C. Sullivan. U. S. G. S. Folio 
 166, p. 6. 
 
 1211. Fayette County. Volcanic dust from near Lena. U. of T. 
 Bulletin 102, p. 277. Analyzed by O. H. P. and S. H. W. 
 
 1172. Jeff Davis County. Fine grained intrusive (?). From three 
 small knobs surrounded by Valley Alluvium, 3 itiiles S. B. 
 of entrance of Musquez Canyon and 1 mile south of 
 Brewster, Jeff Davis County. Sent by Baker. Analyzed 
 1916 by L. A. M. and W. A. F. B. A. No. C324. 
 ,1175. Jeff Davxis County. Lava, earliest of flows at N. W. Syn- 
 cline of volcano near N. W. margin of Ft. Davis. Sent by 
 Baker. Analyzed by J. E. S. 1917, B. A. No. C345. 
 
 1184. Jeff Davis County. Syenite. From Sawtooth Mountain 
 Lat. 30° 42' N., Long. 104° 14' W. From paper on Rocks 
 from the Apache Mountains, by Dr. A. Osann — unpublished 
 — in care of Univ. of Texas. Bur. Bco. Geol. 
 
 1195. Jeff Davis County. Sample undetermined. From volcanic 
 neck just west of Ft. Davis, Alpine road, west of Musques 
 Canyon. Sent by Baker. Analyzed 1917 by J. B. S. B. 
 
 A. No. C352. ' 
 
 1204. Jeff Davis County. Lava. Near furtherest eastward pro- 
 jection of mountains near Limpia Canyon, Fort Davis Sheet. 
 Sent by Baker. Analyzed 1916 by L. A. M. and W. A. F. 
 
 B. A. No. C327. 
 
 1206. Jeff Davis County. Extrusive. From west of BoranchO' 
 
72 University of Texas Bulletin 
 
 Peak. iSent by Baker. Analyzed 1916 by L. A. M. and 
 W. A. F. B. A. No. C328. 
 
 1207. Jeff Davis County. Sample undetermined. iFrom Hancock 
 
 Ranch, Musquez Canyon, S. E. corner of Fort Davis Sheet. 
 
 Sent by Baker. Analyzed 1916 by L. A. M. and W. A. F. 
 
 B. A. No. C333. ! ! 
 
 1209. Jeff Davis County. Liparite (Rhyolite). From Fort Davis. 
 
 Analyzed by J. E. Whitfield, in Laboratory of U. of T., 
 ; 1894. From Osann's paper on "Rocks from the Apache 
 
 r Mts." — unpublished — ^^in care of Univ. of Texas Bureau 
 
 Eco. Geol. 
 1224. Jeff Davis County. Simple undetermined. From 2 miles 
 
 east of Musquez Canyon, on Alpine-Ft. Davis road. Sent 
 
 by Baker. Analyzed 1916 by L. A. M. and W. A. F. T^. 
 
 A. No. C329. 
 1167. Kinney County. Plagioclase basalt, Pinto Mountain, 
 
 Brackett quadrangle. Iiimbiu-gose. Contains olivine, 
 
 augite, plagioclase (labradorite),''biotote, a very little alkali 
 
 feldspar (?), magnetite, and apatite. Sp. gr., 3.118, 
 
 20°. P. R. C. 1067. 
 
 1208. Llano County. Gray granite. Bradshaw's quarry. Sampled 
 
 by G. A. Parkinson. Analyzed 1904 by O. H. P. ,U. of T. 
 Min. S. No. 2828. 
 
 1212. Llano County. Gray granite. From Teich's Quarry 
 Analyzed by O. H. P. U. of T. M. S. No. 2 829. 
 
 1217. Llano County. Granite (Opal). From land of H. C. Howard, 
 Llano. Analyzed 1904 by S. H. W. U. of T. M. S. No. 
 2524. 
 
 1225. Llano County. Red granite. From Teich's Quarry. 
 Analyzed 1904 by O. H. P. U. of T. M. S. No. 2827. 
 
 1205. Presidio County. Quartz pantellerite, Vieja Mountains, San 
 Carlos. liiparose. Description furnished by E. C. E. 
 Lord. Contains anorthoolase, augite, and grains of quartz 
 In groundmass of aegirine-augite, a brown hornblende 
 which is probably barkevikite, orthoclase, and quartz. 
 Magnetite and apatite are present as accessory minerals. 
 Analysis by George Steiger, record No. 1581. 
 
 1215. Presidio County. Graphic granite. Analyzed by O. H. P. 
 U. of T. M. S. No. 2826. 
 
 1220. Presidio County. Rhyolite, near Shafter, Shafter quad- 
 rangle, liiparose neai- alakose. Phenocrysts of sanidine 
 and quartz. Groundmass of, alkali feldspars, quartz, 
 riebeckite, (?), and aegirite. Spherulltic bands traverse 
 the rock. Sp. gr., 2.617, 15.5<=. 
 
 1177. Trans Pecos. Essexite, Big Hill Canyon, Rio Gra.nd,e. 
 Essexose. Contains predominant orthoclase, soda-rich 
 .plagioclase, and nephelite, with considerable augite, olivine. 
 
Chemical Analyses of Tfixas Bocks and Minerals 73 
 
 and quartz. Groundmass of alkali feldspars, quartz, 
 Sp. gr., 2.686, 25.5°. 
 
 1152. Uvalde County. The portion of 1160 soluBle in 1:40 dilute 
 
 nitric acid. 
 
 1153. Uvalde County. The portion of 1156 soluble in 1:40 dilute 
 
 nitric acid. 
 
 1154. Uvalde County. The portion of 1179 soluble in 1:40 dilute 
 
 nitric acid. 
 
 1155. Uvalde County. Limburgite. From Trap rock deposit at 
 
 Knippa. From Texas Trap Rock Co., of Knippa. An- 
 alyzed 1914 by J. E. S. B. A. No. 1602. 
 
 1156. Uvalde County. Nepheline-melilite, basalt, from about 3 
 
 miles southwest of Uvalde. Casselose. Contains nephe- 
 line, melilite, olivine, augite, magnetite, and apatite. Sp. 
 gr., 3.150, 20.5°.. P. R. C. 1064. 
 1160. Uvalde County Nepheline basalt. Tom Nunn's Hill, Uvalde 
 quadrangle. Uvaldcse. Contains olivine, augite, nephe- 
 lite, magnetite, and apatite. Sp. gr., 3.148, 19°. P. R. 
 C. 1065. 
 
 1169. Uvalde County. Basanite. Mount Inge, Uvalde quadrangle. 
 
 Ijujavrose. Contains sanidine, nephelite, hornblende, 
 augite, aegirine-augite, olivine, magnetite, apatite, and a 
 trace of pyrite. Sp.' gr., 2.770 20°. P. R. C. 1069. 
 
 1170. Uvalde County. Rook of basaltic habit, allied to 1169, 1 
 
 mile northeast of Big Mountain, Uvalde quadrangle. 
 Kssexose. Contains alkali feldspar, augite, magnetite, and 
 variable amounts of olivine, nephelite, aegirite, and 
 zeolitic minerals. Sp. gr., 2.742, 23°. P. R. C. 1068. 
 1179. Uvalde County. Phonolite, hill between Black and Big 
 mountains, Uvalde quadrangle. Laurdalose. Contains 
 sanidine, nephelite, and aegirite, and very little brown 
 hornblende, augite, and magnetite. Sp. gr., 2.559, 19.5°. 
 P. R. C. 1070. 
 
 1229. Uvalde County. Nepheline basalt, Black Mountain, Uvalde 
 
 quadrangle. Uvaldose. Contains olivine, augite, neph- 
 elite, magnetite and apatite. Sp. gr., 3.200, 21.5°. P. R. 
 C. 1066. 
 
 1230. Uvalde County. The portion of 1229 soluble in 1:40 dilute 
 
 nitric acid. 
 
 1231. Uvalde County. Augite from 1229. Violet in color, very 
 
 pure. 
 
 C. METAMORPHIC ROCKS 
 
 Note on Occureence.^ — Very few cheinieal analyses have 
 been made of the metamorphic rocks of this state. There are 
 two groups of these ; metamorphics of sedimentary origin and 
 
74 University of Texas Bulletin 
 
 metamorphies of volcanic origin. The metamorphics of sedi- 
 mentary origin are represented by marble, schists and gneisses. 
 Some analyses of an igneous metamorphie rock occurring in the 
 Thrall field show that this rock, which is more like chlorite than 
 serpentine, has been originally highly basic. 
 
 I. MARBLE 
 
 Anal. No. 
 
 1234 Brewster County, piack marble from Jordan's Qiiarry, south 
 
 of Paisano Pass. Analyzed 1904 by O. H. P. T. M. S. A. 
 
 No. 2835. 
 
 1235. (a) Brewster County. White marble from Jordan's Quarry, 
 
 south of Paisano Pass. Analyzed 1904 by O. H. P. T. M. 
 S. A. No.^2834. 
 (b) Burnet 'County. Marble unclassified. From Plat 
 Rock Creek, which flows into the Colorado River two 
 miles below Marble Palls. Sent by Geo. A. Parkinson. 
 April 4, 1914. B. A. No. 1471. Analyzed by .1. E. S. 
 1237. (d) El Paso County. Marble, unclassified. Variegated 
 Pink, old specimen from museum. B. A. No. 1503. Ana- 
 lyzed by J. E. S. April 22, 1914. 
 
 (e) El Paso County. Marble, unclassified. Mumidian 
 Marble, old specimen from museum. B. A. No., 1505. 
 Analyzed by J. E. S. April 22, 1914. 
 
 (f) Gillespie County. Marble, unclassified. Prom Prank 
 Teich of Llano, from Cherry Springs Quarry, 35 miles 
 Ipouth of Llano. B. A. No. 1928. Analyzed November 14, 
 1914 by J. E. S. 
 
 (g) Llano County. Marble, unclassified. Prom Hamilton 
 Place; Analyzed by J. E. S. 1914. B. A. 1628. 
 
 (h) Llano County. Marble, unclassified. Prom Cal 
 
 Avery'g placej Llano County. Analyzed by J. E. S. 191-4. 
 
 B. A. 1630. 
 (i) Llano County. Marble, unclassified. Prom Hammond 
 
 Place, Sharp's Mountain, Llano County. Analyzed by J. 
 
 E. S. 1914. B. A, 1639. 
 
 1236. San Saba County. Variegated pink marble from ranch of 
 
 B. R. Russell, near San Saba. Museum No. 743. Analyzed 
 1913 by J. E. S. B. A. 1502. 
 
 1237. (a) San Saba County. Pink marble from R. B. Russell's 
 
 ranch from near San Saba. Analyzed 1904 by S. H. W. T. 
 M. S. A. No. 2873. 
 (b) San Saba County. Marble. Received from San Saba 
 July 3, 1913. Marked, 12 miles south of San Saba. B. 
 A. 825. Analyzed by S. H. W. 
 
Chemical Analyses of Texas Bocks and Minerals 75 
 
 (c) San Saba County. Marble unclassified. Received from 
 R. C. FuUbright, of Houston. Marljed "Prom San Saba." 
 B. A. No. 556. Analyzed by J. E. S. March 7, 1913. 
 
 II. SERPENTINE 
 
 1238. Gillespie County. Sample sent to Dr. W. B. Phillips, May, 
 1904. Analped by O. H. P. T. M. S. A. No. 2831. 
 
 LIGNITE 
 
 According to the most recent estimate of the U. S. Geol. Sur- 
 vey, Texas has more than twenty three billion tons of lignite. 
 This is distributed over an area of about sixty thousand square 
 miles in the outcrpp of the Eocene Tertiary. The location of 
 the lignite belt may be described as follows: it has a central 
 line extending from Marshall to Laredo, and the belt widens out 
 markedly towards the ends of this line. 
 
 Lignite occurs in beds of less than one to beds a dozen feet 
 thick. Two lignite bearing zones have been recognized, one in 
 the lowermost formation of the Texas Tertiary, and another in 
 the later Fayette, Jackson, and Yegua formations of the Tertiary. 
 These two zones roughly parallel each other, the older zone 
 being farttier away from the coast: the lignite found in Za- 
 valla, Medina, Bexar, Guadalupe, Caldwell, Bastrop, Milam, 
 Robertson, Henderson, Leon, Van Zandt, Smith, Wood, and 
 Bowie Counties belongs to this zone -while the lignite found in 
 Gonzales, Payette, Washington, Burleson, Grimes, Walker. 
 Houston, Trinity, Angelina, San Augustine, Shelby and other 
 counties belongs to the upper zone. 
 
 Mining has so far been done only in the older zone, but de- 
 velopments are under way in Grimes County and at other places 
 to mine the lignite of the upper zone. 
 
 The composition of lignite is exceedingly variable — not only 
 from one locality to another, but also in the same locality, and 
 even in the same layer. Thus, much of the lignite obtained in 
 Milam County about fifteen years ago contained from 40% to 
 47% of volatile combustible matter, while samples obtained re- 
 cently from the operating mines there do not run above 33% of 
 
76 University of Texas Bulletin 
 
 volatile combustible matter, but have a correspondingly greater 
 per cent of fixed carbon. 
 
 Lignite is characterized by a woody structure and a high 
 content of water. Most of the lignite mined now has from 25% 
 to 35% moisture. The per cent of ash is naturally exceedingly - 
 variable because most of it is derived from the mud in the 
 waters of the marshes in which the lignite was made. Very 
 little of the lignite mined has as low as 5% ash, most of it has 
 8 to 10%, and some as high as 16%. The other two proximate 
 components of lignite, — ^namely, the volatile combustible matter 
 and the fixed carbon — are present in most lignites mined in 
 Texas at present in a ratio varying from 5/7 to 7/5, so that 
 with the moisture and ash together amounting to 40%, the 
 volatile combustible matter will vary from 25 to 35% with th > 
 fixed carbon varying from 35 to 25%. In a few commercial 
 lignites the ratio of these components is outside of this range 
 The composition of a typical Texas lignite may be given as — 
 
 Moisture 32% 
 
 Vol. Oomb. Matter .30% 
 
 Fixed Carbon 30% 
 
 Ash 8% 
 
 The sulphur content of commercial lignite can easily be kept 
 within 1%. Greater amounts found in samples are generally 
 due to unnecessarily large admixtures of pyrite. 
 
 The average heating value of lignite is 7500 to 8000 B. t. u. 
 per lb. 
 
 Anal. No. 
 
 1239. Angelina County. Lignite sample, almost like pitchcoal, 
 
 from bed of Angelina River. U. T. B. 365, p. 57. 
 
 1240. Atascosa County. Lignite from the Kinny mine, adjoining 
 
 the Kirkwood mine, 18 miles S. W. of San Antonio. T. G. 
 S. A. R. 1892, p. 185. 
 
 1241. Atascosa County. Lignite from mines at Poteet, and sent 
 
 in by the Poteet Sand and Coal Co., Poteet. Sample ex- 
 posed to the air and somewhat dry. Analyzed 1913 by 
 S. H. W. B. A. 599. 
 
 1242. Atascosa County. From mines at Poteet. Fresh sample 
 
 sent in by Poteet Sand and Coal Co., Poteet; Analyzed 
 1913 by S. H. W. B. A. 600. 
 
Chemicwl Analyses of Texas Bocks and Minerals 77 
 
 1243. Atascosa County. From J. A. Burger, San Antonio, Texas. 
 
 Prom ranch near Potest, 30 to 40 feet under cover, thick- 
 ness of vein 4-5 feet. Analyzed 1913 by S. H. W. B. A. 
 936. 
 
 1244. Atascosa County. From a vein on Franltlin ranch, about 15 
 
 miles S. W, of Christine. Sample submitted to Univ. Bur. 
 Ec. Geol. for analysis Jan., 1914. Analyzed by S. H. W. 
 B. A. 1137. 
 1244a. Atascosa County. From lands between Jourdahton and Char- 
 lotte. Sample sent by Jourdan Campbell. Analyzed 1917 
 by J. E. S. No. C514. 
 
 1245. Bastrop County. Lignite from Glenn-Belto Mine, Bastrop. 
 
 T. M. S. A. No. 1537. 
 
 1246. Bastrop County. Prom Independence Mining Co., Phelan, 
 
 Bastrop Co. Analyzed 1910 by S. H. W. B. A. 21. 
 
 1247. Bastrop County. Outcrop near Clopton Switch, 8 miles south 
 
 of Elgin. Analyzed 1912 by S. H. W. B. A. 175. 
 
 1248. Bastrop Cbunty. Lignite from Independence Mining Co., 
 
 Phelan. Analyzed 1911 by S. H. W. B. A. 192. 
 1248a. Bastrop County. From Sayer Mine owned by P. L. Denison, 
 McDade. Sent by State Purchasing Agent, Jan., 1918. 
 Analyzed by J. E. S. No. C623. 
 
 1249. Bexar County. Lignite from near Cassia Station, on the 
 
 S. A. U. fe G. Ry. Outcrop on Medina River, 40-45 ft. 
 below surface. Seam 4 % ft. thick. Sent in by Dr. Bred- 
 lick, Pleasanton, Texas. Analyzed 1914 by J. E. S. B. A. 
 1477. 
 
 1250. Bexar County. Lignite from % mile north from outcrop of 
 
 sample No.. 1249; drill sample, 164 ft. below surface; seam 
 14 inches thick. Sent in. by Dr. Bredlick of Pleasanton. 
 Analyzed 1914 by J. E. S. B. A. 1478. 
 
 1251. Bowie County. Lignite sample received from R- W. Rodgers, 
 
 Texarkana. Analyzed 1911 by S. H. W. B. A. 38. 
 
 1252. Burnet County. The exact locality of these samples not 
 
 stated. Analyzed by Dr. E. Everhardt of the Univ. of Texas. 
 T. A. S. Ill, p. 25. 
 
 1253. Burnet County. Ditto as for No. 1252. 
 
 1253a. Brown County. Black lignite showing carbonized woody 
 fiber. Sample sent by D. P. Johnson, Brownwood, 1913. 
 Analyzed by J. B. S. B. A. 695. 
 
 1254. Caldwell County. Sample of glance coal from Burdett Wells 
 
 exposure. Sample sent to Lab. of T. G. S. by S. J. Mc- 
 Dowell. T. G. S. A. R. 1892, p. 184. 
 
 1255. Caldwell County. Brown coal, massive and laminated, taken 
 
 at Burdett Wells exposures. Sample sent to Lab. of T. G. S. 
 b|y S. J. McDowell. T. G. S. A. R. 1892, p. 184. 
 
78 University of Texas Bulletin , 
 
 1255a. Camp County. From boundary of Wood and Camp Counties, 
 one mile from Newsome. Depth of mine at foot of hill 
 33 ft. Vein is 5% ft. thick. Another vein 20 ft. deeper 
 is 4 or 5 ft. thick. Sample sent by Hatfield and Clinton, 
 who own 500 acres of this lignite. Analyzed 1918 by 
 J. E. S. !No. 0646. 
 
 1256. Cass County. Sample of lignite from Stone Coal Blulf, 
 
 northeastern part of county, 12 feet thick. U. T. B. 365, 
 p. 89. 
 
 1257. Cherokee County. Lignite, light to dark brown in color, 
 
 laminated, taken 6 miles south of Alto. Sampled by Dr. 
 R. A. Penrose, Jr. T. G. S. A. R. 1892, p. 196. 
 
 1258. Cherokee County. Sample of brown coal, passing into pitch 
 
 coal, laminated in structure, near Jacksonville. T. G. S. 
 
 A. R. 1892, p. 196. 
 
 125 9. Cherokee Country. Sample of brown coal, slightly lignitic. 
 Fracture even, luster dull, compact firm, with traces of 
 decomposed pyrites. Taken by Dr. Penrose at McBee's 
 Schoolhouse. T. G. S. A. R. 1892, p. 196. 
 
 12 60. Cherokee County. Sample from south of Alto. Analyzed 
 by Dr. Everhardt. T. G. S. A. R. 1892, p. 196. 
 
 1261. Fayette County. Sample from Melcher Coal and Clay Co., 
 
 O'Quinn. Analyzed by S. H. W. B. A. 23. 
 
 1262. Fa^yette County. Sample from 2 miles west of Muldoon. 
 
 Sent to Lab. of Univ. Bur. Ec. Geol. by J. T. Wright of 
 Temple. Anal. 1913 by S. H. W. B. A. 906. 
 
 1263. Fayette County. Lignite from Old Big Four Mines, Led- 
 
 better. Represents 8-ft. seam, first stratum, 55 ft. down. 
 Analyzed 1911 by S. H. W. B. A. 61. 
 
 1264. Fayette County. From Old Big Four Mine, Ledbetter. Rep- 
 
 resents 7-ft. seam, lower seam, 95 ft. down. Analyzed 
 1911 by S. H. W. B. A. 62. 
 
 1265. Faprette County. Old Big Four Mine, Ledbetter. 4 ft. of 
 ■ lignite 100 ft. from surface. Analyzed 1911 by S. H. W. 
 
 B. A. 157. 
 
 1266. Payette County. Prom Daniel Webster, Ledbetter. Taken 
 
 from car shipped to Consumers' Fuel and Ice Co., Austin. 
 Analyzed 1911 by S. H. W. B. A. 181. 
 
 1267. Payette County. Upper vein in mines of Lower Stratum 
 
 Mining Co., Ledbetter. Analyzed 1911 by S. H. W. B. A. 
 237. 
 
 1268. Fayette County. Sample of lignite from Lower Stratum 
 
 Lignite Mining Co, Sent in by T. T, Felder. Analyzed 
 1911 by S. H. W. B. A. 1141. 
 
 1269. Payette County. Sample from Lower Stratum Mining Co. 
 
Chemical Analyses of Texas Bocks and Minerals 7'9 
 
 Analyzed for moisture only. Analyzed 1911 by S. H. W. 
 B. A. 1226. 
 
 1270. Fayette Countjy. Lignite from T. T. Felder, Ledbetter. 
 
 Lower Stratum Mining Co. Analyzed 1914 by S. H. W. 
 
 B. A. 1444. 
 1270a. Fayette County. From H. H. Harrison's land, 3 miles north 
 
 of Flatonia on S. A. & A. P. Ry. Vein is 22 ft deep' and 
 
 8 ft. thick. Sample taken 10 inches from the top of vein. 
 
 Analyzed 1918 by J. E. S. No. C613. 
 1270b. Fayette County. Outcrop of vein described under 1270a. 
 
 Anal^yzed 1918 by J. E. S. No. C 614. 
 
 1271. Freestone County. Sample from Col. Wm. Gaines of Austin, 
 
 marked "J. Garmon, Teague, Texas, Shaft No. 2, from near 
 Donie, Texas." Analyzed 1*914 by J. E. S. B. A. 1498. 
 
 1272. Freestone County. Sample from Col. Wm. Gaines of Austin, 
 
 parked "J. J. Garmon, Teague, Texas. Hole No. 4, from 
 near Donie, Freestone County." 
 
 1273. Freestone County. Sample of lignite from near Donie, sent 
 
 in b^y J. M. Bray. Analyzed 1914 by J. E. S. B. A. 1566. 
 
 1274. Freestone County. Sample labelled "No. 1, from shaft on 
 
 lease of J. M. Bray, Donie." 3 ft. of lower seam, begin- 
 ning at 2 % ft. from bottom of seam and extending 5 % ft. 
 Sampled by E. L. P. Analyzed 1914 by J. E. S. B. A. 
 1675. 
 
 1275. Freestone County. From shaft onp lease of J. M. Bray, 
 
 Donie. Represents 2 % ft. of lower seam, beginning 5 ^ 
 ft. and extending to 8 ft. Sampled by E. L. P. Anal. 
 1914 b^y J. E. S. B. A. 1676. 
 
 1276. Freestone County. Lignite from shaft on lease of J. M. 
 Bray, Donie. Represents 3 % ft., beginning with 8 ft. 
 
 and extending to 11% feet. Sampled by E. L. P. Anal. 
 1914 by J. B. S. B. A. 1677. 
 
 1277. Freestone County. Sample taken by E. L. Porch on out- 
 
 crop in creek about 1 mile N. E. of Bray's shaft, -Donie. 
 Represents 3 ft. 2 in. from top down. Anal. 1914 by J. E. S. 
 B. A. 1678. 
 
 1278. Henderson County. Lignite from the Dallas Lignite Co.'s 
 
 mine at Fredlow, 1% miles east of Malakoft. Analyzed by 
 Ledoux & Co., of New York. U. T. B. 307, p. 99. 
 
 1279. Henderson County. Sample taken from same locality as 
 
 No. 1278 but anal, by Babcock and Wilcox Co., of New 
 York City. U. T. B. 307, p. 99. 
 
 1280. Henderson County. Sample from 6-ft. vein, 8 miles west 
 
 of Athens. Submitted by the McKay Lignite Mining Co., of 
 Dallas. Anal. 1914 by J. E. S. B. A. 1596. 
 
 1281. Henderson County. Sampled near outcropping 4 ft. thick. 
 
80 University of Texas Bulletin 
 
 V2 mile from test hole for No. 1280. Sent in by McKay 
 , Lignite Mining Co., of Dallas. Anal. 1914 by J. E. S. 
 B. A. 1597. 
 
 1282. Henderson County. Sample from 12-ft. vein on 2300-acre 
 
 tract north of Malakoff, and about 2 % miles from Stock- 
 ard. Sent in by W. Reid, Dallas, Texas. Anal. 1912 by 
 S. H. W. B. A. 216. 
 1282a. Henderson County. Sample sent from MalakofC b|y W. C. 
 Dodd. Anal. 1916 by J. E. S. No. C102. 
 
 1283. Hopkins County. Lignite from Como Coal Co., Como. T. M. 
 
 S. A. No. 1549. 
 1284.] Hopkins County. Samples from deposits 10-12 miles from 
 1284.1. Sulphur Springs from shaft of W. H. King. No. 1285 an- 
 
 1285. J analyzed by Dr. Bverhardt of the Univ. of Tex. T. G. S. A. 
 
 R. 1892, p. 161. 
 
 1286. Hopkins County. Sample sent in by Crystal Ice Co., Sul- 
 
 phur Springs. Anal. 1915 by J. E. S. B. A. 2384. 
 1287. 1 Hopkins County. Both samples from Como Coal Co., Como, 
 1288. f Texas. . Anal. 1911 by S. H. W. B. A. 41 and 75, respect- 
 ively. 
 
 1289. Hopkins County. From test hole on Fry Land, near Como. 
 
 Thickness 7 to 8 ft. with 1% ins. seam of dirt 1% feet 
 from the bottom. Sample submitted by McKay Lignite 
 Mining Co., Dallas. ' Anal.ibpr J. E. S. B. A. 1209. 
 
 1290. Houston County. Sample of lignite from Houston County 
 
 Coal Co., near Lovelady. T. M. S. A. No. 1545. 
 
 1291. Houston County. Sample from Mr. Crow of the Houston 
 
 Coal and Mfg. Co., Crockett, Texas. Anal. 1913 by S. H. W. 
 B. A. 662. 
 
 1292. Houston County. Sample taken from supply of lignite fur- 
 
 nished the University of Texas Power House by Houston 
 
 Coal and Mfg. Co., Crockett. Anal. 1914 by J. E. S. 
 
 B. A. 2129. 
 1293.. Houston County. Sample from Woofers Station, 11 miles 
 « south of Crockett. Room 17, north entry. U. T. B. 307, 
 
 p. 105. 
 
 1294. Houston County. Same mine as No. 1293, main entry, 600 
 
 feet from shaft, 6.66 ft. cut. U. T. B. 307, p. 105. 
 
 1295. Houston County. Same sample as No. 1293 screened 
 
 through % in. bar screen. 
 
 1296. Karnes County. Sample from depth of 1011-1013 ft. below 
 
 surface of well of Manhattan Oil Co., Karnes City. -Anal, 
 by S. H. W. B. A. 851. 
 
 1297. Lee County. From Hicks. U. T. B. 365, p. 164. 
 
 1298. Lee County. From Blue Ranch. U. T. B. 365, p. 164. 
 
Chemical Analyses of Texas Bocks and Minerals 81 
 
 1299. 
 
 1300. 
 
 1301.] 
 1302. L 
 1303. J 
 1304. 
 
 1305. 
 
 1306. 
 
 1307., 
 
 1308. 
 
 1309. 
 
 •1310. 
 
 Lee County. From Giddings. Anal. 1914 by S. H. W. B. A. 
 
 1445. 
 Leon County. From Bear Grass Coal Co., Jewett. H. B. 
 
 Crosby, Supt. Anal. 1912 by S. H. W. B. A. 234. 
 Leon County. From Bear Grass Coal Co., Jewett. Anal. 
 1912 by S. H. W. B. A. 235, 236, and 256, respectively. 
 
 Leon Count|y. Representing a shipment of 1 T. by the Bear 
 Grass Coal Co., Jewett, to B. J. Babcock, Mining Sub-Sta- 
 tion, Hebron, North Dakota. Anal. 1912 by S. H, W. 
 B. A. 307. 
 Leon County. From mines of Houston Coal and Mfg. Co., 
 Evansville, representing material sent to Hebron, N. D. 
 for briauetting. Anal, by S. H. W. B. A. 342. 
 Leon County. From mines of Bear Grass Coal Co., Jewett, 
 used for briquetting tests. Anal. 1912 by S. H. W. B. A. 
 373. 
 Leon County. From Bear Grass Coal Co., Jewett. Anal. 
 1913 by J. E. S. B. A. 551. 
 
 Leon County. Three samples from Bear Grass Coal Co. 
 mine at Newby. Samples taken at top of vein, middle, 
 and bottom, respectively. Anal. 1915 by J. E. S. B. A. 
 2337, 2338, 2339, respectively. 
 
 1311."] Leon County. Samples of dry lignite from Houston Coal 
 1312.!. and Mfg. Co. Evansville. Anal. 1913 by S. H. W. B. A. 
 927 and 928, respectively. 
 
 1313. Leon County. Sample of lignite from Newby, screened: 
 ' opening between bars 1", straight %" across top and %" 
 
 across bottom. Screenings about 20% of material thrown 
 on screen. Analyzed 1913 by S. H. W. B. A. 933. 
 
 1314. Leon County. From P. V. Crosby, superintendent Bear Grass 
 
 Coal Co., Jewett. Analyzed 1914 b|y J. E. S. B. A. 1888. 
 
 1315. Leon County. Evansville lignite furnished the University of 
 
 Texas power house. Analyzed 1914 by J. E. S. B. A. 1987. 
 
 1316. Leon County. From Bear Grass Coal Mine, Newby. Anal- 
 
 yzed 1914 by J. E. S. B. A. 2111. 
 1317.1 ^^°^ County. Three samples from Houston Coal and Mfg. 
 1318. Co., Evansville, furnished the U. of T. power house on 
 1319.( dates Dec, 1914.; Feb., 1915; and Mar., 1915, respectively. 
 
 Analyzed by J. E. S. B. A. 2203, 2299, 2363, respectively. 
 1319a. Leon County. Sample sent by Bear Grass Coal Co., Jewett. 
 
 Analyzed 1917 by J. E. S. No. C435. 
 1320. Limestone County. Sample from near Teague, sent in by 
 
 H. L. Kniffln. Anal,yzed 1914 by E. L. P., Jr. B. A. 1669. 
 
82 University of Texas Bulletin 
 
 1321. LiEQestone County. Sample from Head's Prairie in south- 
 
 eastern part of county. Analyzed by Prof. Maurie of 
 Chicago. T. G. S. A. R. 1892, p. 173. 
 
 1322. Medina County. Sample from Carr Mine, near Lytle, Texas. 
 
 U. T. B. 307, p. 87. 
 
 1323. Medina County. Sample from Bertetti Mine, Lytle, Texas. 
 
 U. T. B. 307, p. 87. 
 
 1324. Medina County. Sample from Carr Mine, Lytle, Mine No. 3, 
 
 350 feet N. E. entry No. 6, 51 %" cut. U. T. B. 307, p. 105. 
 
 1325. Medina County. Same mine as No. 1324, but 600 ft;. N. W. 
 
 room at middle of N. E. entry No. 5, 49%" cut. U. T. B. 
 307, p. 105. 
 
 1326. Medina County. Carr Mine, near Lytle. U. T. B. 365, p. 180. 
 
 1327. Medina County. Bertetti Mine, near Lytle. U. T. B. 365, 
 
 p. 180. 
 
 1328. Milam County. From Burnet Fuel Co., Milano. Depth 4 ft. 
 
 9 in. Received from Otto Stolle, Austin, Texas. Analyzed 
 by S. H. W. B. A. 46. 
 
 1329. Milam County. From jnine of American Brictuetting Co., 
 
 Big Lump, Texas. Sampled by E. L. P. Jr. in boiler room 
 of plant. Analyzed 1913 by S. H. W.- B. A. 883. 
 
 1330. Milam County. From Worley Mine, Rockdale. Analyzed 
 
 1901 by O. H. P. and S. H. W. T. M. S. A. No. 1538. 
 
 1331. Milam County. Prom Black Diamond Coal Co., Rockdale. 
 
 Analyzed 1901 by O. H. P. T. M. S. A. No. 1539. 
 
 1332. Milam County. From Lignite Eggette Coal Co., Rockdale. 
 
 Analyzed 1902 by O. H. P. T. M. S. A. No. 1540. 
 
 1333. Milam County. From J. J. Olsen & Sons, Rockdale. Anal- 
 
 yzed 1902 by O. H. P. T. M. S. A. 1541. 
 
 1334. Milam County. From Big Lump Coal Co., Rockdale. Anal- 
 
 yzed 1902 by O. H. P. and S. H. W. T. M. S. A. No. 1542. 
 
 1335. Milam County. From Aransas Pass Lignite Co., Rockdale. 
 
 Analyzed 1902 by O. H. P. and S. H. W. T. M. S. A. No. 
 1543. 
 
 1336. Milam County. Sample from deep vein at Rockdale, in mine 
 
 of the American Lignite Briquette Co. Analyzed 1913 by 
 S. H. W. B. A. 420. 
 
 1337. Milam County. Sample from Texas Coal Co., Rockdale. Air- 
 
 slaked. Analyzed 1913 bpr S. H. W. B. A. 661. 
 
 1338. Milan! County. Sample from Texas Coal Co., Rockdale, as 
 
 taken from bins before being air-slaked. Analyzed 1913 
 by S. H. W. B. A. 745. 
 
 1339. Milam .County. Sample from Texas Coal Co., Rockdale. 
 
 Thoroughly subjected to the action of sun and rain for 
 26 days. Analyzed 1913 by S. H. W. B. A. 746. 
 
Chemical Analyses of Texas Bocks and Minerals 83 
 
 1340. Milam County. Sample from Rowlett and Wells, Rockdale. 
 
 B. A. 25. 
 
 1341. Milam Count|y. Sample from Rockdale Lignite Co., Rock- 
 
 dale. B. A. 28. 
 
 1342. Milam County. Sample from Vogel Coal and Mfg. Co., Rock- 
 
 dale. B. A. 29. 
 
 1343. Milam County. Sample received from Texas Coal Co., Rock- 
 
 dale. B. A. 39. 
 
 1344. Milam County. Sample from Rockdale Coal Mine Co., Rock- 
 
 dale. B. A. 55. 
 
 1345. Milam County. Sample from Olsen Mine, Rockdale, 400 ft. 
 
 east of shaft, 77" cut. U. T. B. 307, p. 106. 
 
 1346. Milam County. Same locality as No. 1345, except that it was 
 
 taken 500 ft. east of shaft, 79" cut. U. T. B. 307, p. 106. 
 
 1347. Milam County. Same as No. 1345. Sample over %" screen. 
 1347a. Milam County. From undeveloped mine, 9 miles S. B. of 
 
 • Rockdale. Sent by W. A. Butler, Hillsboro. Analyzed 
 1918 hpr J. E. S. No. C714. 
 
 1348. Morris County. Brown coal, on the Jonathan N. Bohonan 
 
 headright, about 5 % miles south of Daingerfield. From 
 vein at S. H. Pruitt's house, 15" thick. T. G. S. A. R. 
 1892, p. 160. 
 
 1349. Palo Pinto County. Sample from near Gordon. T. A. S. Ill, 
 
 p. 25. 
 1349a. Panola County. From a farm of Dell R. Todd, near Gary. 
 Vein is 2 ft. deep and 3 ft. thick. Analyzed 1917 by J. E. S. 
 No. C520. 
 
 1350. Robertson County. From Central Texas Mining, Mfg. and 
 
 Land Co., Calvert Bluff. T. M. S. A. No. 1544. 
 
 1351. Robertson County. Calvert Mine at Calvert, Room 4 of north 
 
 entry 1, south, 250 feet south of opening, upper 81%" bed, 
 77" cut. U. T. B. 307, p. 106. 
 
 1352. Robertson County. Sample from Calvert Mine, at Calvert, 
 
 Room 8, off east entry north, 550 feet N. E. of opening, 
 83%" bed, 78%" cut. U. T. B. 307, p. 106. 
 
 1353. Robertson County. From near Bremond. Sample sent in by 
 
 D. B. Matthews. Analyzed 1913 by S. H. W. B. A. 823. 
 
 1354. Robertson County. On farm of Strumensky & Son, 2% 
 
 miles N. E. of Wootan, seam 6% ft. in well 70 ft. deep. 
 Analyzed 1913 by S. H. W. B. A. 953. 
 
 1355. Robertson County. 1% miles S. W. of farm of Strumensky 
 
 & Son, near Wootan. Thickness of seam 6 % ft. in well 
 73 ft. deep. Analyzed 1913 by S. H. W. B. A. 954. 
 
 1356. Robertson County. One-half mile N. N. W. of Strumensky 
 
 & Son's farm, from 6 ft. seam in well 53 ft. deep. Anal- 
 yzed 1913 by S. H. W. B. A. 955. 
 
84 University of Texas Bulletin 
 
 1357. Robertson County. One-fourth mile from Strumensky & 
 
 Son's farm, near Wootan. Thickness of seam 3 ^A ft. in 
 well 33^4 ft. deep. Analyzed 1913 by S. H. W. B. A. 956. 
 
 1358. Robertson County. New Mine. Sample taken from 700 ft. 
 
 from shaft north, depth of 60-70 ft. The Southwestern 
 Fuel Co., Calvert. Thickness of seam 6'% ft., first seam. 
 Analyzed 1913 b^y S. H. W. B. A. 957. 
 
 1359. Robertson County. Prom Southwestern Fuel Co., Calvert. 
 
 Received from C. M. Beard, Austin, Texas. Analyzed 1913 
 by S. H. W. B. A. 974. 
 1360-1374. Robertson pounty. Lignite from Southwestern Fuel 
 Co., Calvert. Sampled by W. B. Phillips from I. & G. N. 
 car No. 1534 at the XJ. of T. power house. This lignite was 
 screened through mesh screens of various sizes as given 
 below and used in tests on the Belvet Rocking Grates. 
 Analyzed 1914 by J. B. S. as follows: 
 
 1360. Screened through 1", 8%. B. A. 1750. 
 
 1361. Screened through 1" and on %", 32%. B. A. 1751. 
 
 1362. Screened through %" and on %", 20%. B. A. 1752. 
 
 1363. Screened through V^." and on Vs", 20%. B. A. 1753. 
 
 1364. Screened through %", 20%. B. A. 1754. 
 
 1365. Screened through 1^', 10%. B. A. 1755. 
 
 1366. Screened through 1" and on %", 34%. B. A. 1756. 
 
 1367. Screened through %" and on %", 20%,. B. A. 1757. 
 
 1368. Screened through %" and on %", 20%. B. A. 1758. 
 
 1369. Screened through %", 16%. B. A. 1759. 
 
 1370. Screened through 1", 12%,. B. A. 1760. 
 
 1371. Screened through 1" and on %", 26%. B. A. 1761. 
 1372; Screened through V2" and on %", 24%,. B. A. 1762. 
 
 1373. Screened through^" and on %", 18%. B. A. 1763. 
 
 1374. Screened through %", 20%. B. A. 1764. 
 
 1375. Rusk County. Sample from 5 miles S. E. of Henderson, 2% 
 
 miles from railroad. Two seams 38" thick. Analyzed 
 1915 b^y J. E. S. B. A. 2632. 
 
 1376. Rusk County. Sample from Graham's Lake, 12 miles west 
 
 of Henderson, 3-6 ft. thick. U. T. B. 365, p. 209. 
 
 1377. Rusk County. Sample from near Iron Mountain. Analyzed 
 
 by Dr. Riddell. T. G. S. A. R. 1892, p. 194. 
 
 1378. Shelby County. Sample from Timpson. T. M. S. A. No. 
 
 1546. 
 
 1379. Smith County, Sample of lignite from depth of 800-900 ft. 
 
 near Whitehouse. Analyzed 1912 by N. C. Hamner of 
 Dallas. Analysis obtained from T. M. Coupland of Troupe. 
 U. T. B. 307, p. 102. 
 
 1380. Smith Counl^. Sample from Alec and Albert Woldert, Tyler, 
 
Chemical Analyses of Texas Bocks and Minerals 85 
 
 obtained from outcropping near Spring. Analyzed 1910 by 
 S. H. W. B. A. 34. 
 
 1381. Smith County. Sample obtained on eastern edge of spring 
 
 branch at seam by Dr. Albert Woldert of Tyler. Analyzed 
 1911 by S. H. W. B. A. 35. 
 
 1382. Somervell County. Sample of lignite obtained at Hill Creek, 
 
 about % mile from north of Bosque County and about ^ 
 mile S. W. of Brazos River, near crossing of Hill Creek 
 by the lower Glen Rose and Morgan Road. Sent in b|y Miss 
 Lucy Tuggle, Kopperl. Black lustrous color and breaks 
 with conchoidal fracture. Analyzed 1915 by J. E. S. 
 B. A. 2367. 
 
 1383. Titus County. Prom Cookville Coal and Lumber Co., Mount 
 
 Pleasant. Analyzed 1910 by S. H. W. B. A. 18. 
 
 1384. Titus County. Sample of lignite from Libby Coal Co., Cook- 
 
 ville. Sent in, by the Texas Public Service Co. of Mount 
 Pleasant. Taken from 8 ft. seam, 50 ft. below surface; 
 represents entire seam. Analyzed by J. E. S. B. A. 1725. 
 
 1385. Upshur County. Sample from R. B. Nelson, Gilmer. Anal- 
 
 yzed by S. H. W. B. A. 54. 
 
 1386. Upshur County. Sample from R. E. Ezekiel, Kelsey, taken 
 
 from top of vein. Analyzed 1911 by S. H. W. B. A. 148. 
 
 1387. Upshur County. Sample from R. E. Ezekiel, Kelsey. taken 
 
 from bottom of vein. Analyzed 1911 by S. H. W. B. A. 
 149. 
 
 1388. Van Zandt County. Sample from Edgewood Coal and Fuel 
 
 Co., Wills Point. Analyzed by S. H. W. B. A. 36. 
 
 1389. Walker County. Sample from 10-15 miles north of Hunts- 
 
 ville and south of Trinity River. Analyzed 1909 by P. S. 
 T. Sample obtained from G. A. Wynne of Huntsville. U. 
 T. B. 307, p. 103. 
 
 1390. Washington County, Lignite from Mrs. Heber Stone, Bren- 
 
 ham. Analyzed 1914 by J. B. S. B. A. 2101. 
 
 1391. Wilson County. Sample from 3 ft. seam in, Cibolo Greet. 
 
 Sent in by Miss Angela Hendricks, Sutherland Springs. 
 
 Analyzed by J. E. S. B. A. 2574. 
 1392.1 Wood County. Two lignite samples from North Texas Coal 
 1393. f Co. of Alba. T. M.i S. A. Nos. 1547 and 1548, respectively. , 
 
 1394. Wood County. Sample of lignite from Consumers' Lignite 
 
 Co., H0|yt. Analyzed 1909 by Crossley Bros., Manchester, 
 England. U. T. B. 307, p. 104. 
 
 1395. Wood County. Sample from eastern part of the county. 
 
 Sent in by B. Snyder of Marshall. Analyzed by J. E. S. 
 B. A. 2272. 
 
 1396. Wood County. Lignite from Alba. Received from Consum- 
 
 ers' Lignite Co., Dallas. B. A. 17, 
 
86 Umversity of Texas Bulletin 
 
 1397. Wood County. Sample from Alba. Received from Lone Star 
 
 Lignite Co., Dallas. B. A. 22. 
 
 1398. Wood County. Sample from Alba. Received from Alba- 
 
 Malakoff Lignite Co., Dallas, labelled "Alba-Malakoff." 
 B. A. 59. 
 
 1399. Wood County. Lump lignite from Consumers' Lignite Co., 
 
 Alba. Analprzed by S. H. W. B. A. 913. 
 
 1400. Wood County. Nut lignite from Consumers' Lignite Co., 
 
 Alba. Analyzed by S. H. W. B. A. 914. 
 
 1401. Wood County. Dust lignite from Consumers' Lignite Co., 
 
 Alba. Analyzed by S. H. W. B. A. 915. 
 
 1402. Wood County. Dust lignite, dry. From Consumers' Lignite 
 
 Co., Alba. Analyzed by S. H. W. B. A. 916. 
 
 1403. Wood County. From Hoyt No. 1 Mine, south entry, 2,500 
 
 ft. from mouth, 8% ft. cut. U. T. B. 307, p. 107. 
 
 1404. Wood County. Same as No. 1403. Foot of air shart, 94" 
 
 cut. 
 
 1405. Same as No. 1403. Run of mine. 
 
 1406. Wood County. Same as No. 1403. Screened. 
 
 1407. Wood County. Same as No. 1403. 1,100 ft. S. E. of slope, 
 
 6% ft. cut. 
 
 1408. Wood County. Same as No. 1403. 400 ft. N. B. of slope, 
 
 8 1-6 ft. cut. 
 
 1409. Wood County. Same as No. 1403. Run of mine. 
 
 1410. Wood County. Screened lump lignite from Consumers' Lig- 
 
 nite Co., Hoyt. Sampled by W. B. Phillips at boiler plant 
 of Lone Star Ice Co. Passed over 1" screen. Analyzed 
 1914 by S. H. W. B. A. 1716. 
 
 1411. Wood Country. Lump lignite, screened through 1" and on 
 
 %", excluding large lumps, 21.4%. Sample from Con- 
 sumers' Lignite Co., Hoyt. Sampled by W. B. P. Anal- 
 yzed 1914 by S. H. W. B. A. 1717. 
 
 1412. Wood County. Screened lump from Consumers' Lignite Co., 
 
 Hoyt. Screened through % " ahd on % ", excluding all large 
 lumps, 11%. B. A. 1718. 
 
 1413. Wood County. Lump lignite from Consumers' Lignite Co., 
 
 Hoyt. Screened through %" and on %", excluding all' 
 large lumps, 20.90%. Sampled by W. B. Phillips. B. A. 
 1719. 
 
 1414. Wood County. Screened lump lignite from Consumers' Lig- 
 
 nite Co., HO|yt. Sampled by W. B. P. at the boiler plant 
 of the Lone Star Ice Co. of Austin. Screened through %", 
 excluding all large lumps, 11%. B. A. 1720. 
 1415-1419. Wood County. Prom Consumers' Lignite Co., Hoyt. 
 Sampled by W. B. P. at the TJ. of T. power house from top 
 of car No. 23510. Screened through various size screens 
 
Chemical Analyses of Texas Bocks and Minerals 87 
 
 to determine the variation of percentage of the constitu- 
 ents with size of particles. All analyses reported "as re- 
 received."' Analyzed 1914 by J. E. S. 
 
 1415. Screened and sample taken on 1" screen, 14%. B. A. 
 
 '1728. 
 
 1416. Screened through 'l" and on %", 20%. B. A. 1729. 
 
 1417. Screened through Vz" and on %", 24%. B. A. 1730. 
 
 1418. Screened through %" and on %", 21%. B. A. 1731. 
 
 1419. Screened through Vs", 21%. B. A. 1732. 
 1420-1430. Wood County. Screened nut lignite from Consum- 
 ers' Liguite Co., Hoyt. Sampled by J. E. S. Mid- 
 dle part of car No. 23510. Analyzed 1914 by J. 
 
 E. S. All analyses are B. A. 
 
 1420. Screened on 1", 22%. B. A. 1733. 
 
 1421. Screened through 1" and on %", 32%. B. A. 1734. 
 
 1422. Screened through %" and on %", 10%. B. A. 1735. 
 
 1423. Screened through %" and on %", 14%. B. A. 1736. 
 
 1424. Screened through Vs", 22%. B. A. 1737. 
 
 1425. All sizes of lumps. B. A. 1738. 
 
 1426. Screened on 1", 20%. B. A. 1739. 
 
 1427. Screened through 1" and on %", 38%. B. A. 1740. 
 
 1428. Screened through %" and on %", 20%. B. A. 1741. 
 
 1429. Screened through %" and on %", 16%. B. A. 1742. 
 
 1430. Screened through %", 6%. B. A. 1743. 
 
 1431-1435. Wood County. Screened nut lignite from Consum- 
 ers' Lignite Co., Hoyt. Sampled by J. E. S., bot- 
 tom part of car No. 23510. Analyzed 1914 by J. 
 E. S. All analyses are B. A. 
 
 1431. Screened on 1", 32%. B. A. 1744. 
 
 1432. Screened through 1" and on %", 40%. B. A. 1745. 
 
 1433. Screened through %'' and on %", 16%. B. A. 1746. 
 
 1434. Screened through %" and on %", 8%. B. A. 1747. 
 
 1435. Screened through %", 4%. B. A. 1748. 
 
 1436. Zavala County. Prom a drill hole of an artesian well 12 
 
 miles w«st of La Pryor, at a depth of 118 ft. 
 
 Received from W. J. Armstrong. Analyzed 1913 
 
 by S. H. W. B. A. 926. 
 1437-1458. Ultimate analyses of lignites from various counties in 
 the State. This table copied from Dumble: "Brown Coal 
 and Lignite of Texas," T. G. S. A. R. 1892, p. 213. Also 
 U. T. B. 307, p. 110. 
 1459-1463. Ash from Wood County Lignite. Sample of lignite 
 from Consumers' Lignite Co., Alba. Each marked "D. 
 McN. P." B. A. 617, 618, 619 and 620, respectively. 
 
88 University of Texas Bulletin 
 
 Keference is made below to lignite analyses whieh were not 
 copied because of doubtful determination of some of their con- 
 stituents; e. g. sulphur. 
 
 Anderson County. T. G. S. A. R., 1892, p. 197. (1 analysis)... 
 
 Bowie County, T. G. S. A, E., 1892, p. 159. (2 analyses). 
 
 Houston County, T. G. S. A. R., 1892, p. 202. (3 analyses) . 
 
 Houston County. T. G. S. A. R., 1892, p. 201. (1 analysis). 
 
 Leon County. T. G. S. A. R., 1892, p. 174. (1 analysis). 
 
 Medina County T. G. S. A. R., 1892, p. 187. (1 analysis). 
 
 Morris County. T. G. S. A. R., 1892, p. 161. (1 analysis). 
 
 Panola County. T. G S. A. R, 1892, p. 192. (1 analysis). 
 
 Rains County. T. G. S. A. R., 1892, p. 171. (2 analyses). 
 
 Wood County. T. G. S. .A. R., 1892, p. 171. (1 analysis). 
 
 Wood County T. G. S. A. R., 1892, p. 170. (2 analyses). 
 
 BITUMINOUS COAL 
 
 Note on Occueence. — Bituminous coal occurs in several beds 
 in the Pennsylvanian formations in the north and central part of 
 the state. The region of greatest peat accumulation in Pennsyl- 
 vanian rocks lies farther north. Oxu* coal seams in Texas in this 
 formation are located near the seaward border of the main basin 
 of Pennsylvanian coal formations. They are naturally thin and 
 less free from silt ingredients than the coals farther north and 
 east. The Cretaceous coals of west Texas are in this respect anal- 
 ogous to the Pennsylvanian coals. They occupy the north and 
 east border of the principal coal-bearing beds of the Cretaceous 
 age. 
 
 The workable area of bituminous coal in Texas is 8,200 square 
 miles, and includes the counties of Eastland, Erath, Maverick, 
 Palo Pinto, Webb, Wise, and Young. 
 
 I. PENNSYIiVAJVIAN 
 
 Anal. No. 
 
 .1463. Cherokee County. Sample from F. M. Synnot, Alto, Texas. 
 Anal. 1916 by J. E. S. B. A. C278.. 
 
 1464. Coleman County. Sample of coal from near Rookwood. 
 
 U. T. B. 365, p. 96. 
 
 1465. Coleman County. Sample from old Silver Moon Mine, N. S. 
 
 of Santa Anna. U. T. B. 365, p. 96. 
 
Chemical Analyses of Texas Bocksi and Minerals 89 
 
 1466. Coleman County. Sample from Bull Creek. (Cisco Divi- 
 sion.) Analyst not mentioned. T. G. S. A. R. IT, (1890), 
 p. 551. 
 
 1467-1472. Coleman County. From Star and Crescent Co., about 
 IV4, miles southwest of Rockwood. These six analyses 
 were made on different parts of a single block of coal 
 representing the total thickness of the stratum and an 
 average specimen. Anal, by L. E. Dickson. U. S. G. S. B. 
 164, p. 434. 
 
 1473. Eastland County. Sample of coal from the Smith-Lee Mine, 
 
 near Cisco. Analysis of ash of this coal also given in 
 orig. report. Anal. 1902 by O. H. P. and S. H. W. T. M. 
 S. A. No. 1534. 
 
 1474. Erath County. Sample of coal from Texas and Pacific Coal 
 
 Co., Thurber. Anal. 1910 by S. H. W. B. A. 10. 
 
 1475. Erath County. Sample of bituminous coal from Mine No. 
 
 7, Tex. & Pac. Coal Co., Thurber. Anal. 1902 by O. H. P. 
 and S. H. W. T. M. S. A. No. 1529. 
 
 1476. Erath County. Sample from Mine No. 8, Tex. and Pac. Coal 
 
 Co:, Thurber. Anal, by O. H. P. and S. H. W. 1902. 
 T. M. S. A. No. 1530. 
 
 1477. Erath County. Sample from Mine No. 9, Tex. and Pac. 
 
 Coal Co., Thurber. Anal. 1902 by O. H. P. and S. H. W. 
 T. M. S. A. No. 1531. 
 
 1478. ' Erath County. Sample from Mine No. 10, Tex. and Pac. 
 
 Coal Co., Thurber. Anal. 1902 by O. H. P. and S. H. W. 
 T. lyt. S. A. No. 1532. 
 
 1479. Jack County. From Stewart Creek Coal Co., Jermyn, Texas. 
 
 Sample submitted by W. P. Stewart. Anal, by S. H. W. 
 B. A. 37. 
 
 1480. Jack County. Sample from Lost Valley. Name of analyst 
 
 could not be ascertained. U. T. B. 307, p. 25. 
 
 1481. McCulloch County. Sampled from large quantity of coal at 
 ' Waldrip. T. G. S. A. R. I, (1889), p. 215. 
 
 1482. McCulloch County. Analysis made on one small piece of 
 
 coal from Waldrip. T. G. S. A. R. 1, (1889), p. 215. 
 
 1483. Montague County. Average composition of coal in a vein 
 
 of coal near Bowie. Anal. 1895. Name of analyst not 
 given. Eng. & Min. Jour. Vol. 60, No. 19, p. 443. 
 
 1484. Palo Pinto County.- Sample from Strawn Coal Mining Co., 
 
 Strawn. Analyzed by the Detroit Testing Laboratory, 
 Detroit, Mich. 1912. U. T. B. 307, pp. 28-29. 
 
 1485. Palo Pinto County. Sample of coal from Strawn Coal Min- 
 
 ing Co., near Strawn. Analysis of ash also given. Anal. 
 1902 by O. H. P. and S. H. W. T. M. S. A. No. 1533. 
 
90 Uwiversity of Texas Bulletin 
 
 1486. Palo Pinto County. Sample of coal from Strawn Coal Min- 
 
 ing Co., Strawn. Marked: "For analysis and investiga- 
 tion." Anal. 1910 b|y S. H. W. B. A. 9. 
 
 1487. Parker County. Bituminous coal from Texas Coal and Fuel 
 
 Co., Rock Creek. Mine No. 1. Anal. 1902 by O. H. P. 
 and S. H. W. T. M. S. A. No. 152 5. 
 
 1488. Parker County. Bituminous coal from Texas Coal and Fuel 
 
 Co., Rock Creek. Mine No. 2. Anal. 1902 by O. H. P. 
 and S. H. W. T. M. S. A. No. 1526. 
 
 1489. Parker County. Bituminous coal from J. S. Young Mine, at 
 
 Keeler. Anal. 1902 by O. H. P. and S. H. W. T. M. S. A. 
 No. 1528. 
 
 1490. Parker County. Sample from Santo Mining and Develop- 
 
 ment Co., Weatherford. Anal. 1910 by S. H. W. B. A. 7. 
 
 1491. Shackelford County. From a 5-ft. seam, taken at a depth 
 
 of 675 feet, in boring for oil on the Smaulm Ranch, about 
 6 miles north of Albany. Anal, by J. E. S. B. A. 2100. 
 
 1492. Stephens County. Upper bench of bituminous coal at Coal 
 
 Branch, west of Crystal Palls. Sampled by W. B. Phillips. 
 1906. U. T. B. 189, p. 35. 
 
 1493. Stephens County. Lower bench of bituminous coal at Coal 
 
 Branch, west of Crystal Falls. Sampled by W. B. Phillips. 
 U. T. B. 189, p. 36. 
 
 1494. Wise County. Bituminous coal from Wise County Coal Co., 
 
 Bridgeport. Anal. 1902 by O. H. P. and S. H. W. T. M. 
 S. A. 1522. 
 
 1495. Wise County. From Bridgeport Coal Co., Bridgeport. Anal. 
 
 1910 by S. H. W. B. A. 2. 
 
 1496. Wise County. From Wise County Coal Co., Bridgeport. 
 
 Marked: "For analysis and investigation." Anal. 1910 
 by S. H. W. B. A. 11. 
 
 1497. Young County. Lower vein of coal in mine of W. K. Gor- 
 
 don, Thurber. Anal. 1903 by S. H. W. T. M. S. A. No. 
 2200. 
 
 1498. Young County. From near Loving. Thickness of vein 
 
 about 5 feet. Sent in by H. L. Kniffin of Dallas. Anal. 
 1914 by J. E. S. B. A. 1343. 
 
 1499. Young County. From near Loving. Thickness 22 to 28 
 
 inches. Depth below surface 105 feet. Sent in by E. M. 
 Gleason, Dallas. Anal. 1915 by J. E. S. B. A. 2585. 
 
 1500. Young County. From Belknap Coal Co., Newcastle. Anal. 
 
 1910 by S. H. W. B. A. 1. 
 
 1501. Young County. Sample of coal from Belknap Coal Co., New- 
 
 castle. Anal. March, 1911, by- S. H. W. B. A. 53. 
 
Chemical Analyses of Texas Bocks and Minerals 91 
 
 II. UPPER 0BETACEOUS 
 
 1502. Brewster County. From west of Gano Springs in bed of 
 
 creek. Anal. 1902 by O. H. P. T. M. S. A. No. 1624. 
 
 1503. Brewster County. Coal from Kimble opening N. W. of Gano 
 
 Springs. Anal. 1902 by O. H. P. T. M. S. A. No. 1625. 
 
 1504. Brewster County. Coal from Christmas Mts. District. (Cub 
 
 Springs.) Anal. 1902 by O. H. P. T. M. S. A. No. 1623. 
 
 1505. Brewster County. Coal from bottom of Cottonwood Creek, 
 
 at Chisos Pen. 18 inches thick. Sampled by Dr. W. B. 
 Phillips, Dec. 1904. Anal. 1904 by O. H. P. T. M. S. A. 
 No. 3145. 
 
 1506. Brewster County. Coal from Kimble Pits, exposed on south 
 
 side of hill at a point 2 miles north of Chisos Pen. Also 
 north of Rough Run. 20 inches thick. Sample collected 
 by W. B. P. Anal. 1904 by O. H. P. T. M. S. A. No. 
 3146. 
 
 1507. Brewster County. From flats 2% miles east-southeast of 
 
 Study Butte about 1% miles S. E. of Maverick Mt. Also 
 on east bank of a creek near Maverick Mt. Thickness In 
 creek bank, 8 inches. Sampled by Dr. J. A. Udden. Anal. 
 1904 by O. H. P. T. M. S. A. No. 3147. 
 
 1508. Brewster County. Anthracite from 2 miles S. W. of Stroud's 
 
 Ranch. Taken from dump' by J. A. U. Anal. 1904 by 
 O. H. P. T. M. S. A. No. 3148. 
 
 1509. Brewster County. Anthracite with jet lustre from 2 miles 
 
 S. W. of Stroud's ranch, east of the Rosillos Mts. Sampled 
 by J. A. U. Anal. 1902 by O. H. P. T. M. S. A. No. 3149. 
 
 1510. Brewster County. Bone coal, 3 miles south of Study Butte. 
 
 Sampled by J. A. U. Anal. 1904 by O. H. P. T. M. S. A. 
 No. 3150. 
 
 1511. Brewster County. Lignitic structure coal-bearing horizon, 
 
 north of Talley's ranch. Sampled by J. A. U. Anal. 1904 
 by O. H. P. T. M. S. A. No. 3151. 
 
 1512. Brewster County. Coal and bone, one mile east of the 
 
 mouth of the Grand Canyon. From the low ridges of the 
 flats between Terlingua Abaja and the mouth of the 
 Terlingua Creek, about % mile to the south and a little 
 west of the village. Thickness, 18 inches. Sampled by 
 Dr. J. A. Udden. Anal. 1904 by O. H. P. T. M. S. A. No. 
 3152. Also U. T. B. 93, p. 97. 
 
 1513. Brown County. Lignitic coal from D. F. Johnson of Brown- 
 
 wood. U. T. B. 307, p. 98. 
 
 1514. Maverick County. Upper cretaceous cbal from near Eagle 
 
 Pass. U. T. B. 307, p. 26. 
 
92 University of Texas Bulletin 
 
 1515. Maverick County. Average of several coal analyses from the 
 
 Dolch Mine near Eagle Pass. Anal, by the U. S. Bureau 
 of Mines. U. T. B. 307, p. 26. 
 
 1516. Maverick County. Ditto as KTo. 1515, except that it was 
 
 analyzed Sept. 14, 1911. 
 
 1517. Maverick County. From the Maverick County Coal Co., 
 
 Eagle Pass. Anal. 1902 by O. H. P. and S. H. W. T. M. 
 S. A. No. 1520. 
 
 1518. Maverick County. Sample of coal furnished the Austin 
 
 White Lime Co., McNeill, Texas', by the Olmos Coal Co., 
 Eagle Pass. Washed nut coal. Anal. 1911 by S. H. W. 
 B. A. 42. 
 
 1519. Maverick County. Run-of-mine at works of the Austin 
 
 White Lime Co., at McNeill. Furnished by the Olmos 
 Coal Co., Eagle Pass. Anal, by S. H. W. 1911. B. A. 43. 
 
 1520. Maverick County. Sample of coal from Rio Bravo Coal Co., 
 
 Eagle Pass. Anal. 1902 by O. H. P. and S. H. W. T. M. 
 
 S. A. No. 1521. 
 1521."! Maverick County. Sample from Olmos Coal Co., Eagle Pass. 
 1522. J. Analyses furnished by C. S. Plant, Superintendent Fuel 
 1523.J Service, The Sunset-Central Lines. U. T. B. 307, p. 28. 
 
 1524. Maverick County. Lump coal from Olmos Coal Co., Eagle 
 
 Pass. Anal. 1911 by S. H. W. B. A. 651. 
 
 1525. Maverick County. Washed egg coal from Olmos Coal Co., 
 
 Eagle Pass. Without marks. Anal. 1913 by S. H. W. 
 B. A. 652. 
 
 1526. Maverick County. Nut coal from Olmos Coal Co., Eagle 
 
 Pass. Anal. 1913 by S. H. W. B. A. 653. 
 
 1527. Maverick County. Pea coal from the Olmos Coal Co., Eagle 
 
 Pass, Texas. Anal. 1913 by S. H. W. B. A. 654. 
 
 1528. Maverick- County. Coal from the International Coal Mines 
 
 Co., Eagle Pass. Anal. 1913 by S. H. W. B. A. 697. 
 
 1529. Maverick County. From International Coal Mines Co., 
 
 Eagle Pass. Sample "A." Screened nut. Received from 
 W. B. Smith, of Austin, Texas. Anal. 1912 by S. H. W. 
 B. A. 330. 
 
 1530. Maverick County. Screened egg coal from International Coal 
 
 Mines Co., Eagle Pass. Sample "B." Anal, by S. H. W. 
 B. A. 331. 
 
 1531. Maverick County. From Olmos Coal Co., Eagle Pass. Anal. 
 
 1912 by S. H. W. B. A. 332. 
 
 1532. Maverick Couhty. From International Coal Mines Co , 
 
 Eagle Pass. B. A. 4. 
 
 1533. Maverick County. "Special Sample" from International 
 
Chemical Analyses of 'Bexas Bocks and Minerals 93 
 
 Coal Mines Co., Eagle Pass. Anal. 1910 by S. H. W. 
 B. A. 5. 
 
 1534. Maverick County. From Olmos Coal Co. Marked: "For 
 
 analysis and investigation." Anal. 1910 by S. H. W. 
 B. A. 6. 
 
 1535. Maverick County. Washed egg coal from Olmos Coal Co., 
 
 Eagle Pass. B. A. 31. ' 
 
 1536. Maverick County. Washed nut coal from Olmos Coal Co., 
 • Eagle Pass. Anal. 1910 by S. H. W. B. A. 32 
 
 1537. Maverick County. Washed pea coal from Olmos Coal Co., 
 
 Eagle Pass. Anal. 1910 by S. H. W. B. A. 33. 
 
 1538. Maverick County. Washed pea coal from Olmos Coal Co., 
 
 Eagle Pass. Anal. 1910 by S. H. W. B. A. 50. 
 
 1539. Maverick County. Washed nut coal from Olmos Coal Co., 
 
 Eagle Pass. Anal. 1910 by S. H. W. B. A. 51. 
 
 1540. Maverick County. Washed egg coal from Olmos Coal Co., 
 
 Eagle Pass. Anal. 1910 by S. H. W. B. A. 52. 
 
 1541. Maverick County. Sample from Olmos Coal Co., Eagle Pass. 
 
 Anal. 1915 by J. E. S. B. A. 2255. 
 
 1542. ' Maverick County. Washed egg coal from the Olmos Coal 
 
 Co. Anal. 1915. by J. E. S. B. A. 2301. 
 
 1543. Maverick County. Washed nut coal from the Lamar Mine, 
 
 Olmos Coal Co. Anal. 1915 by J. E. S. B. A. 2302. 
 
 1544. Maverick County. Washed -pea coal from the Lamar Mine, 
 
 Olmos Coal Co. Anal. 1915 by J. E. S. B.'A. 2303. 
 
 1545. Maverick County. Washed coal, "Barleycorn," from the 
 
 Lamar Mine, Olmos Coal Co. Anal. 1910 by J. E. 3. 
 B. A. 2304. 
 
 1546. Maverick County. Coal furnished the University of Texas 
 
 powerhouse by the Olmos Coal Co., of Eagle Pass. 
 Washed egg. Car of coal donated to the University. 
 Sampled March 1-5, 1915. Coal was out in rain for sev- 
 eral days. Anal, by J. E. S. B. A. 2331. 
 Maverick County. Coal from the San Carlos field. Analyses, 
 made by Dr. Peter FIremain, were made on samples from 
 
 1547. various parts of the seam as follows, respectively: 
 
 1548. 1547 Upper part of seam. 
 
 1549.}. 1548 Above binder. 
 
 1550. 1549 .Below binder. 
 
 1551. 1550 Above clay, lower seam. 
 
 1551 Coal shaft. 
 
 U. T. B. 307, p. 30. 
 
94 University of T-eoms Bulletin 
 
 1 Presidio County. Coal from the San Carlos field. Reported 
 1552. I in "Mineral Resources of the U. S.", 1893, p. 385. Analyses 
 1553.1 sent to the U. S. G. Survey by Mr. R. E. Russell, Gen'l 
 
 I Mgr. of the San Carlos Coal Co., Pittsburg, Pa. U. T. B. 
 
 J 189, p. 34. 
 
 1554. Presidio County. From upper vein in old cut, 300 yds. S. E. 
 
 of the Old Ingle tunnel, San Carlos Coal Field. Sample 
 brought' in by Dr. J. A. Udden. This sample does not 
 coke. Anal. 1913 by S. H. W. B. A. 836. 
 
 1555. Presidio County. From upper vein in south bank of Arroyo, 
 
 near S. W. corner of Section 67, Block 3, of this county. 
 Sampled by J. A. U. July, 1913. Anal, by S. H. W. B. A. 
 837. 
 
 1556. Presidio County. From lower coal Section 47, Block 3, 
 
 D. & P. Ry. land. Sampled by J. A. U. Seam 18 inches 
 thick. Anal. 1913 by S. H. W. B. A. 846. 
 
 1557. Presidio County. Coal near Stinking Spring, north area of 
 
 outcrop of the San Carlos formation. Thickness of seam 
 20 inches. Sampled by J. A. U., July, 1913. Anal, by 
 S. H. W. B. A. 847. 
 
 in. CANNEL COAL 
 
 1558. Webb County. Cannel coal from the Laredo District. Anal. 
 
 by Dr. J. R. Bailey, of the Univ. of Tex. Analysis furnished 
 by O. Stolley of Austin. V. T. B. 307, p. 33. 
 
 1559. Webb County. Cannel coal from upper bench in mine of 
 
 Rio Grande Coal and Irrigation Co., near Laredo. Anal, 
 by Dr. Peter Fireman of the U. S. G. S. U. T". B. 307, 
 p. 34. 
 
 1560. Webb County. Cannel coal from lower bench of mine of the 
 
 Rio Grande Coal and Irrigation Co., Laredo. Anal, by Dr. 
 Peter Fireman. U. T. B. 307, p. 34. 
 
 1561. Webb County. Cannel coal from the Cannel Coal Co., of 
 
 Laredo. Anal, by the Technologic Branch of the U. S. 
 G. S. at Pittsburg, Pa., 1910. U. T. B. 307, p. 33. Rep- 
 resents lot of 1000 lbs. taken at the mine, not freed from 
 impurities. 
 
 1562. Webb County. Cannel Coal from Cannel Coal Co., Darwin. 
 
 Anal. 1902 by O. H. P. and S. H. W. T. M. S. A. 1519. 
 
 1563. Webb County. Cannel coal from Rio Grande Coal and Irri- 
 
 gation Co., Minera. Anal. 1902 by O. H. P. and S. H. W. 
 T. M. S. A. 1518. 
 
 1564. Webb County. Cannel coal from Rio Grande Coal Co., 
 
 Minera. Analyzed by Prof. D. P. Jones of Chicago. Analy- 
 
Chemical Analyses of Texas Bocks and Minerals 95 
 
 sis submitted to the Univ. of Tex. Min. Survey by Thos. 
 Brewster of the firm. Oct., 1901. T. M. Surv. File 6-A. 
 
 1565. Webb County. Cannel coal from the Santo Tomas Coal 
 
 Field. U. S. G. S. 164, p. 65. 
 
 1566. Webb County. Cannel coal from the San Jose Cannel Coal 
 
 Co., San Jose. Received from Dr. Bredlick. Anal. 1913 by 
 S. H. W. B. A. 925. 
 
 1567. Webb County. Cannel coal from lands of Mrs. Shaw, in the 
 
 northwestern part of the county, between San Lorenzo and 
 San Ambrosia Creeks. Thickness of seam 6 in. Sampled 
 by J. A. U. Anal, by S. H. W. B. A. 931. 
 
 1568. Webb County. Cannel coal from" lands of Mrs. Shaw in 
 
 N. W. part of county. Thickness of seam 4 inches. Sent 
 in to Univ. Bur. Ec. Geol. Lab. by J. A. U. Anal, by 
 S. H. W. B. A. 932. 
 
 1569. Webb County. From Cannel Coal Co., Laredo. Anal. 1910 
 
 by S. H., W. B. A. 3. 
 
 1570. Webb County. From Rio Grande Coal Co., Laredo. Marked: 
 
 "For Analysis and Investigation." Anal, by S. H. W. 
 B. A. 8. 
 
 1571. Webb County. Cannel coal from the Santo Tomas Coal Co., 
 
 Laredo. 25 lbs. of material crushed to %, to % inch. 
 Obtained from shaft No. 1, at Santo Tomas, near Laredo. 
 B. A. 258. 
 
 1572. Webb County. ~ Special Santo Tomas cannel coal from the 
 
 Santo Tomas Mine, near Laredo. Anal, by S. H. W. B. A. 
 336. 
 
 1573. Webb County. Cannel coal from a carload lot of Santo 
 
 Tomas mine near Laredo. Sampled Oct., 1911. Anal, by 
 S. H. W. B. A. 337. 
 
 Reference is made to a number of analyses which are not in- 
 cluded in this bulletin because of doubtful determination of 
 some of the constituents. 
 
 Erath County. T. G. S. A. R., II, (1890), p. 551. (3 analyses). 
 
 Montague Counljy. T. G. S. A. R., II, (1890), p. 551. (1 
 analysis) . 
 , Webb Oounty. U. S. G. S. B., 164, p. 65. 
 
 Wise County. T. G. S. A. R., II, (1890), p. 551. 
 
 Young County. T. G. S. A. R., II, (1890), p. 551. 
 
96 University of Texas Bulletin 
 
 IKON ORE 
 
 ..Note on Occueence. — Mo^t of, the iron ores of Texas occur 
 in the Tertiary in association with lignite. These ores were no 
 doubt originally carbonate of lime laid down as clay-iron-stone. 
 Naturally they contain a considerable quantity of the siliceous 
 sediments deposited in the same waters. Their iron content is 
 hence naturally low. They have been classified into bedded ore 
 and conglomerate ore. It is thought by some that the conglom- 
 erate ore represents secondary deposits derived from the banded 
 ore. The present condition of the ore is largely in the form of 
 limonite and hematite. In the Llano country there are mag- 
 netite deposits in the pre-Cambrian schists and gneisses. Some 
 of these occur as thin strata in the deposits and in lother cases 
 there has been concentration of this kind of material along lines 
 of fracture or shearing, resulting in vein-like bodies. Some of 
 this magnetite ore has been changed to hematite and limonite 
 by weathering. There occur also in this region lenticular masses 
 of hematite and limonite, evidently representing beds of glau- 
 conite in the Cambrian sediments. 
 
 Iron ore is obtained in a tptal area of 1,300 square miles, in 
 parts of the counties of Anderson, Cass, Cherokee, Gregg, Har- 
 rison, Henderson, Marion, Morris, Smith, Upshur, "Wood, Panola, 
 Shelby, and Rusk. 
 
 I. ,EOOENE TERTIARY 
 Anal. No. 
 
 1574. Anderson County. Average of several analyses of laminated 
 
 limonite from northwest of Palestine. U. T. B. 365, p. 55. 
 
 1575. Anderson County. Average of several analyses of laminated 
 
 iron ore north of locality of No. 1574. U. T. B. 365, p. 55. 
 
 1576. Anderson County. Laminated iron ore from the high divide 
 
 between Still's creek and Ionic creek. U. T. B. 365, p. 55. 
 
 1577. Anderson County. Laminated iron ore from Posterville. 
 
 Anal, by J. H. H. T. G. S. A. R. 2, p. 311. (1890). 
 
 1578. Anderson County. Laminated limonite from 8 miles south- 
 
 west of Palestine. Anal, by J. H. H. T. G. S. A. R. 2, 
 p. 311. (1890). 
 
 1579. Anderson County. Limonite from one-half mile north of 
 
 Nechesville. Anal, by L. E. Magnenat. T. G. S. A. R. 2, 
 p. 311. (1890). 
 
 1580. Anderson County. Iron ore from north of Palestine. Anal. 
 
 by L. E. M. T. G. S. A. R. 2, p. 311. 
 
 1581. Anderson County. Bitto as No. 1580. 
 
Chemical Analyses of T^exas Bocks and Minerals 97 
 
 15 82. Anderson County. Sample of iron ore from south of Pales- 
 tine. Anal, by L. E. M. T. G. S. A. R. 2, p. 311. 
 
 1583. Anderson County. -Siliceous and conglomerate iron ore 
 
 from south of Palestine. Anal, by L. E. M. T. G. S. A. R. 
 2, p. 312. 
 
 1584. Anderson County. Siliceous iron ore from 5 miles south of 
 
 Palestine. Anal, by J. H. H. T. G. S. A. R. 2, p. 312. 
 
 1585. Anderson County. Conglomerate iron ore from south of 
 
 Palestine. Anal, by L. E. M. T. G. S. A. R. 2, p. 312. 
 
 1586. Anderson County. Conglomerate iron ore from south of 
 
 Palestine. Anal, by L. E. M. T. G. S. A. R. 2, p. 312. 
 
 1587. Anderson County. Siliceous iron ore from south of Palestine. 
 
 Anal, by L. E. M. T. G. S. A. R. 2, p. 312. 
 
 1588. Cass County. Concretionary iron ore from, Vz mile S. E. of 
 
 Lanark Station, on the T. & P. Ry. Anal, by L. E. M. 
 T. G. S. A. R. 2, p. 83. 
 
 15 89. Cass County. Sample from N. E. corner of Horatio Cun- 
 ningham's headright. Anal, by J. H. H. T. G. S. A. R. 2, 
 p. 83. 
 
 15 90. Cass County. Sample from W. R. Gilley headright, near 
 Queen City. Anal, by J. H. H. T. G. S. A. R. 2, p. 83. 
 
 1591. Cass County. Sampl-e from west side of Rachel P. Moore 
 
 headright. Anal, by L. E. M. T. G. S. A. R. 2, p. 83. 
 
 1592. Cass County. From corner of J. Massie headright. Anal; 
 
 by L. E. M. T. G. S. A. R. 2, p. 83. 
 1593.) Cass County. From Lavina Mormen headright. Anal, byt 
 1594.f L. E. M. and J. H. H. respectively. T. G. S. A. R. 2, p. 83. 
 
 1595. Cass County. From R. Water's farm, P. M. Keeton head- 
 
 right. Anal, by J. H. H. T. G. S. A. R. 2, p. 83. 
 
 1596. Cass Count,y. From M. L. Hinton's farm, on the R. M. Hat- 
 
 field headright. Anal, by J. H. H. T. G. S. A. R. 2, p. 83. 
 
 1597. Cass County. Prom W. H. Hunt's farm, on the Queen City 
 
 and Douglasville road, on the M. S. Mullen headright. 
 Anal, by J. H. H. T. G. S. A. R. 2, p. 83. 
 
 1598. Cass County. From Mr. Moore's farm, J. J. Hudson head- 
 
 right, near Atlanta. Anal, by J. H. H. T. G.- S. A. R. 2, 
 p. 83. 
 15 99. Cass County. ,Prom Berry Crawford's mine, one mile north 
 of Atlanta. Anal, by J. H. H. T. G. S. A. R.2, p. 83. 
 
 1600. Cass County. On south side of A. Duncan headright. Anal. 
 
 by J. H. H. T. G. S. A. R. 2, p. 83. 
 
 1601. Cass County. From the S. Burnham survey, on Little Beach 
 
 Creek. Anal, by J. H. H. T. G. S. A. R. 2, p. 83. 
 
 1602. Cass County. From James Horton headright, near Spring- 
 
 dale, 14 miles north of Jefferson. Anal, by J. H. H. T. 
 G. S. A. R. 2, p. 83. 
 
 1603. Cass County. From Oneto, 4 miles south of Cusseta, on W. 
 
98 Vniversiiy of Texas Bulletin 
 
 F. Young's survey. Anal, by P. S. Tilson. T. G. S. A. R. 
 2, p. 83. 
 
 1604. Cass County. From the S. W. corner of the John Lick sur- 
 
 vey, 7 miles N. E. of Linden. Anal, by P. T. S. T. G. S. 
 A. R. 2, p. 83. 
 
 1605. Cass County. From 5 miles N. W. of Linden. Anal, by J. 
 
 H. H. T. G. S. A. R. 2, p. 83. 
 
 1606. Cass County. From S. Hill survey, 8 miles northeast of Lin- 
 
 den. Anal, by P. S. T. T. G. S. A. R. 2, p. 83. 
 
 1607. Cass County. From the Charles Plank survey, 5 miles S. E. 
 
 of Atlanta. Anal, by P. S. T. T. G. S. A. R. 2, p. 83. 
 
 1608. Cass County. From Cusseta Hill, No. 3. Anal, by P. S. T. 
 
 T. G. S. A. R. 2', p. 83. 
 
 1609. Cass County. From Lambert's Hill, on the Williams Lam- 
 
 bert survey, 9 miles north of west of Linden. Anal, by 
 P. S. T. T. G. S. A. R. 2, p. 83. 
 
 1610. Cass County. From Bowlder, foot of hill north of Black- 
 
 well, on the D. Bryant headright. Anal, by P. S. T. T. G. 
 S. A. R. 2, p. 83. 
 
 1611. Cass County. On Linden and Red Hill Road, 2 miles N. E. 
 
 of Linden. Anal, by P. S. T. T. G. S. A. R. 2, p. 8 3. 
 
 1612. Cass County. Froip 6 miles north of Linden, near the 
 
 Charles Tapp survey. Anal, by P. S. T. T. G. S. A. R. 2, 
 p. 79. 
 
 1613. Cass County. From James W. Old's survey, 5 miles north 
 
 of Linden. Anal, by P. S. T. T. G. S. A. R. 2, p. 79. 
 
 1614. Cass County. From halt a mile northwest of the Cusseta 
 
 Post office. Anal, by P. S. T. T. G. S. A. R. 2, p. 79. 
 
 1615. Cass County. From John Styles' headright, north of the 
 
 Cusseta Post office. Anal, by P. S. T. T. G. S. A. R. 2, 
 p. 79. 
 
 1616. Cass County. Sample from Cusseta Hill, on Crawford and 
 
 Sanche's headright. Anal, by P. S. T. T. T. G. S. A. R. 
 2, p. 79. 
 
 1617. Cass County. From Widow Roger's farm, on James 
 
 Clements headright, on the Knights Bluff road. Anal, by 
 L. B. M. T. G. S. A. R. 2, p. 79. 
 
 1618. Cass County. From near center of A. Emanuel survey, near 
 
 Queen City. Anal, bfr J. H. H. T. G. S. A. R. 2, p. 79. 
 
 1619. Cherokee County. Limonite. Anal, by the St. Louis Sam- 
 
 pling and Testing Works. Sampled by John Birkinline, 
 published in th.3 Mineral Resources of the United States. 
 1887, p. 51. T. Ml. S. B. 5, p. .47. (1902). 
 162 0. Cherokee County. Poor fossiliferous iron ore, from 4 miles 
 north of Jacksonville. Anal, h^r J. H. H. T. G. S. A. R. I, 
 p. 83. 
 
Chemical Analyses of Tiexas Bocks and Minerals 99 
 
 1621. Cherokee County. Brown massive iron ore from 5 miles 
 
 west of Jacksonville. Anal, by J.- H. H. T. G. S. A. R. , 
 I, p. 83. 
 
 1622. Cherokee County. Limonite. Exact locality not stated. 
 
 Anal, bpr L. E. M. T. G. S. A. R. I, p. 83. 
 1623. 
 1624. 
 
 1625.] Cherokee County. Limonite from near Alcalde furnace, 
 1626. J Rusk. T. M. S. B. 5, p. 47. 
 1627. 
 1628. 
 IS 2 9. Gonzales County. Sample of iron ore from C. F. Moore and 
 
 B. Gray, Harwood, Texas. Anal, by O. H. P. and S. H. W. 
 
 T. M. S. A. No. 1348. 
 
 1630. Gonzales County. Iron conglomerate from banks of Plum 
 
 creek, between Shiner and Lockhart. Submitted by H. H. 
 Temple of Yoakum, Texas. Anal, by J. E. S. B. A. 2 519. 
 
 1631. Gregg County. Iron ore from A. Ferguson headrlght. T. G. 
 
 S. A. R. 2, p. 169. 
 
 1632. Gregg County. Iron ore from L. Skillern headright. T. G. 
 
 S. A. R. 2, p. 169. 
 
 1633. Gregg County. W. Robinson headright. T. G. S. A. R. 2, 
 
 p. 169. 
 163 4. Gregg County. On Gladewater road, 2% miles west of 
 
 Longview. T. G. S. A. R. 2, p. 169. 
 1635. Harrison County. Nodular concretionary iron ore. U. T. B. 
 
 365, 6. 141. 
 163 6. Harrison County. Concretionary ore from top of hill, one 
 
 mile west of Hynson's Springs. Anal, by J. H. H. T. G. 
 
 S. A. R. 2, p. 138. (1890). 
 
 1637. Harrison County. Iron ore from top of hill at Hynson's 
 
 springs. Anal, by L. B. M. T. G. S. A. R. 2, p. 138. ' 
 
 1638. Harrison County. From Hardy Berry farm, J. Johnson's 
 
 headright, northeastern part of county. Anal, by J. H. H. 
 T. G. S. A. R. 2, p. 138. 
 
 1639. Harrison County. From east side of Dan Davis headright. 
 
 Anal, by J. H. H. T. G. S. A. R. 2, p. 138. 
 
 1640. Harrison County. From Hardy Berr^y's old field, J. John- 
 
 son's headright. Anal, by J. H. H. T. G. S. A. R. 2, p. 138. 
 
 1641. Harrison County. Laminated iron ore from Hynson's Moun- 
 
 tain. Anal, by L. E. M. T. G. S. A. R. 2, p. 135. 
 
 1642. Harrison County. From B. Tally headright. Anal, by L. B. 
 
 M. T. G. S. A. R. 2, p. 135. 
 
 1643. Harrison County. From C. Grillet headright. Anal, by L. 
 
 E. M. T. G. S. A. R. 2, p. 135. 
 
 1644. Harrison County. From 6 miles north of Marshall, near 
 
100 VvAver^ity of Texas Bulletin 
 
 the railroad crossing. Anal, by J. H. H. T. G. S. A. R. 2, 
 p. 135. 
 1645. Harrison County. From J. B. Hall, on C. Grillet headright. 
 
 Anal, by L. E. "M. T. G. S. A. R. 2, p. 135. 
 ,1646. Harrison County. From Walnut Creek, near standpipe of 
 Marshall Water Works. Anal, by L. E. M. T. G. S. A. R. 
 2, p. 135. 
 
 1647. Harrison County. From R. Hightower headright. Anal, by 
 
 L. E. M. T. G. S. A. R. 2, p. 135. 
 
 1648. Harrison Country. , From L. Watkins headright. Anal, by 
 
 J. H. H. T. G. S. A. R. 2, p. 135. 
 
 1649. Harrison County. From the J. Decker headright. AnaL by 
 
 J. H. H. in the laboratory of the State Geol. Survey. T. G. 
 S. A. R. 2, 'p. 135. 
 
 1650. Harrison County. Conglomerate iron ore from the Peter 
 
 Pinchum headright. Anal, by J. H. H. T. G. S. A. R. 2, 
 p. 140. 
 
 1651. Harrison County. From the Thomas Gray Headright, near 
 
 Wade Scott's house. Anal, by J. H. H. T. G. S. A. R. ,2, 
 p. 140. 
 
 1652. Harrison County. From near John Cole's homestead, on the 
 
 M. Lindsay headright. Anal, by L. E. M. A. G. S. A. R. 
 2, p. 140. ' , 
 
 1653. Harrison County. From the W. C. Allen headright. Anal. • 
 
 b|y L. E. M. T. G. S. A. R. 2, p. 140. 
 
 1654. Harrison County. From south side of M. Lindsay head- 
 
 right. Anal, by L. E. M. T. G. S. A. R. 2, p. 140. 
 
 1655. Harrison County. Ferruginous sandstone (iron ore) from 
 
 T. G. Twynan's farm. Clary Grillet headright. Anal, by 
 L. E. M.' T. G. S. A. R. 2, p. 142. 
 
 1656. Harrison County. From east side of hill at Hynson's Springs. 
 
 Anal, by L. E. M. T. G. S. A. R. 2, p. 142. 
 
 1657. Harrison Count|y. Prom northeast corner of the Richard 
 
 Hooper headright. Anal, by L. E. M. T. G. S. A. R. 2, 
 p. 142. 
 165?. Harrison County. From the north side of the Peter Pin- 
 shum headright. Anal, by J. H. H. T. G. S. A. R. 2, 
 p. 142. 
 
 1659. \Harrison County. From the W. C. Allen headright. Anal. 
 
 by L. E. M. T. G. S. A. R. 2, p. 142. 
 
 1660. Harrison County. From the northeast side of the Sheldon 
 
 headright. Anal, by J. H. H. T. G. S. A. R. 2, p. 142. 
 
 1661. Harrison County. From Blalock's Ridge, Thomas Gray head- 
 
 right. Anal, by J. H. H. T. G. S. A. R. 2, p. 142. 
 
 1662. Harrison County. Prom the W. C. Allen headright, fronj 
 
Chemical Analyses of Texas Bocks and Minerals 101 
 
 fracture in sand. Anal, by L. E. M. T. G. S. A. R. 2, 
 p. 142. 
 
 1663. Henderson County. Massive limonite from near Fincastle. 
 
 Anal, by J. H. H. T. G. S. A. R. I, p. 83. 
 
 1664. Henderson County. Laminated limonite. From near Fin- 
 
 castle. Anal, by J. H. H. T. G. S. A. R. 1, p. 83. 
 
 1665. Henderson County. Limonite from 1% miles southeast of 
 
 Brownsboro. Anal, by L. E. M. T. G. S. A. R. I, p. 83. 
 
 1666. Henderson County. Limonite from S. E. part of the county. 
 
 U. T. B. 365, p. 144. 
 
 1667. Handerson County. Limonite from central part of the 
 
 county around Brownsboro. U. T. B. 368, p. 144. 
 
 1668. Henderson County. A concretionary ore found 2 miles west 
 
 of Fincastle. Anal, by J. H. H. T. G. S. A. R. 2, p. 191 
 
 1669. Henderson County. From Pilot Hill, on Alfred Benge head- 
 
 right. Anal, by J. H. H. T. G. S. A. R. 2, p. 191. 
 
 1670. Henderson County. From Round Mountain, on the A. K. 
 
 Jones headright. Anal., by L. E. M. T. G. S. A. R. 2, 
 p. 191. 
 
 1671. Henderson County. From near Myrtle Mead Schoolhouse, 
 
 on the W. J. L. Scott headright. Anal, by L. E. M. T. G. 
 S. A. R. 2, p. 191. 
 
 1672. Henderson County. From the A. H. Caldwell headright. 
 
 Ana}, by L. E. M. T. G. S. A. R. 2, p. 191. 
 
 1673. Hopkins County. 4 miles east of Sulphur Springs. Anal. 
 
 by Dr. Riddell. Published in Shumard's Geology of West- 
 ern Texas, 1886, p. 143. 
 
 1674. Houston County. Sample from Major W. J. Bordon, U. S. 
 
 Engineer, marked "Found at Hurricane Shoals, Trinity, 
 243 miles below Dallas, and 90 miles above Riverside." 
 Anal. 1915 by J. E. S. B. A. 2699. 
 
 1675. Houston County. Prom 12 miles N. E. of Crockett. T. G. S. A. 
 
 R. 2, p. 32. Anal, by J. H. H. 
 
 1676. Houston County. From near Davis' Creek. T. G. S. A. R. 
 
 2, p. 32. 
 
 1677. Houston Count|y. From 12 miles N. E. of Crockett. T. G. 
 
 S. A. R. 2, p. 32. 
 
 1678. Houston County. From 8 miles northwest of Crockett. 
 
 T. G. S. A. R. 2, p. 32. 
 
 1679. Marion County. From Lasater Hill. Anal, by J. H. H. T. 
 
 G. S. A. R. 2, p. 83. 
 
 1680. Marion County. Iron geode from Berry Hill. Anal, by J. 
 
 H. H. T. G. S. A. R. 2, p. 83. 
 
 1681. Marion County. Prom Drury Richardson Survey, 8 miles 
 
 north of Jefferson. Anal, by L. E. M. T. G. S. A. R. I, 
 p. 83. 
 
102 
 
 1682. 
 
 1683. 
 
 1684. 
 
 1685. 
 
 1686. 
 
 1687. 
 
 1688. 
 
 1689. 
 1690. 
 
 1691. 
 1692. 
 
 1693. 
 1694. 
 
 1695. 
 
 1696. 
 1697. 
 1698. 
 
 1699. 
 
 1700. 
 
 University of Texas Bulletin 
 
 i 
 
 Marion County. Iron conglomerate from Leverett's Hill. 
 Anal, by J. H. H. T. G. S. A. R. 2, p. 83. 
 
 Marion County. From Berry Hill. Anal, by J. H. H. T. 
 G. S. A. R. 2, p. 83. 
 
 Marion County. From J. A. McKlnney survey, 6 miles north 
 of Jefferson. Anal. b|y L. E. M. T. G. S. A. R. I, p. 83. 
 
 Marion County. From the J. W. Duncan surveyj 9 miles 
 north of Jefferson. Anal, by L. B. M. T. G. S. A. R. I, 
 p. 83. 
 
 Marion County. Ochreous limonite, from McKinney and 
 "Williams headright. Anal, by J. H. H. and L. E. M. T. G.' 
 S. A. R. II, pp. 101-113. 
 
 Marion County. Concretionary ore, from Nash's old fur- 
 nace. Anal, by J. H. H. and L. E. M. T. G. S. A. R. II, 
 pp. 101-113. 
 
 Marion County. Concretionary iron ore, from northwest 
 corner. Anal, by J. H. H. and L. E. M. T. G. S. A. R. II, 
 pp. 101-113. 
 
 Marion County. From N. Lilly headright. T. G. S. A. R. 
 2, pp. 101-113. 
 
 Marion County. Brown ochre from Isaac Johnson's head- 
 right, 3 miles south of Lasater, station. T. G. S. A. R. 
 2, pp. 101-113. 
 
 Marion County. From S. J.^ Buress headright. T. G. S. A. 
 R. 2, pp. 101-113. 
 
 Marion County. Ochreous limonite from Samuel Jeffries' 
 headright, 2 miles northwest of Lasater station. T. G. S- 
 A. R. 2 pp. 101-113. 
 
 Marion County. Ochreous limonites, 2 miles southwest of 
 Lasater Station. T. G. S. A. R. 2, pp. 101-113. 
 
 Marion County. Concretionary iron pre from a field, near 
 T. Parrell's house, on the A. Richardson headright. T. G. 
 S. A. R. II, pp. 101-113., 
 
 Marion County. Iron ore from East Texas Brown Ore De- 
 velopment Co., 75-acre Gilbert tract, Longview. Brown 
 ore mining. Sampled by W. B. Phillips. Anal. 1913 by 
 S. H. W. B. A. 855. 
 
 Marion County. Iron ore from 75-acre hill, Gilbert Hill 
 tract. East Texas Brown Ore Development Co. Sampled 
 by W. B. P. from A. T. & S. F. Ry. car 89624. Aug. 1913, 
 Anal. 1913 by S. H. W. B. A. 859, 864, and 873 
 respectively. 
 
 Marion County. Iron ore from same locality as No. 1698. 
 Sample taken from workings near new toolhouse. B. A. 
 876. 
 
 Marion County. Sample of iron ore from same locality as. 
 
Chemical Analyses of Texas Bocks and Minerals 103 
 
 No. 169 8. Received through Mr. Wesley Merritt, Long- 
 view, Texas. Anal. 1913 by S. H. W. B. A. 881. 
 1701."| Marion County.. These samples from the Gilbert Hill tract, 
 1702.1 near Longview. Marked "No. 7, 13, and 16," respectively. 
 
 1703. I Anal. 1913 by S. H. W. B. A. 886, 892, and 895, respec- 
 J tively. 
 
 1704. Marion County. Analysis of sample No. 1695, washed and 
 
 dried. The yield of material was 37.5% from the dirt. 
 Anal, b^ S. H. W. B. A. 900. 
 
 1705. Smith County. Mammilary liraonite, from 6 miles S. B. of 
 
 Tyler. Anal, by L. E. M. T. G. S. A. R. I, p. 83. 
 
 1706. Smith County. Laminated brown iron ore from 8 miles S. 
 
 E. of Tyler. Anal, by J. H. H. T. G. S. A. R. I, p. 83. 
 
 1707. Smith County. Limonite from 7 miles west of Troupe. 
 
 Anal, b^y L. E. M. T. G. S. A. R. I, p. 83. 
 
 1708. Upshur County. Laminated limonite. Prom Butler survey, 
 
 N. E. corner of the county. Anal, by L. E. M. T. G. S. 
 A. R. I, p. 83. 
 
 1709. Upshur County. Concretionary limonite. From 3 miles 
 
 south by east of Coffeeville. Anal, by J. H. H. T. G. S. 
 A. R. I, p. 83. 
 
 1710. Upshur County. Concretionary limonite. From northeast 
 
 part of the county. Anal, by L. E. M. T. G. S. A. R. I, 
 p. 83. 
 
 1711. Upshur Counly. Limonite from the Butler survey, in the 
 
 N. B. corner of the county. Anal, by J. H. H. T. G. S. A. 
 R. I, p. 83. 
 
 1712. Van Zandt County. Clay Ironstone from a well 8 miles 
 
 south of Grand Saline. Anal, by J. H. H. T. G. S. A. R. 
 I, p. 83. 
 
 1713. Wood County. Limonite from 2 miles S. W. Pine Mills. 
 
 Anal, by J. H. H. T. G. S. A. R. I, p. 83. 
 
 1714. Wood County. Limonite from 3% miles north of Mineola. 
 
 Greer headright. Anal, by J. H. H. T. G. S. A. R. I, p. 83. 
 
 1715. Wood County. Concretionary Limonite from the Gonzales 
 
 headright, 3 miles N. W. of Pine Mills. Anal, by J. H. H. 
 T. G. S. A. R. I, p. 83. 
 
 1716. Wood County. Limonite from 3 miles west and north of 
 
 Pine Mills. Anal, by L. E. M. ,T. G. S. A. R. I, p. 83. 
 
 1717. Wood County. Limonite from % mile east of Lake Pork, 2 
 
 miles north of railroad. Anal, by L. E. M. T. G. S. A. R. 
 I, p. 83. 
 
 II. IKON ORES OTHER THAN TERTIARY 
 
 ^718. Blanco County. Soft hydrated iron ore from McMillan's 
 Diggings near Westbrook. Anal. b,y L. E. M. T. G. S. A. 
 R. II, p. 635. 
 
104 University of Texas Bulletin 
 
 1719. Blanco County. Hematite from Iron Rock Creek. Anal. 
 
 by J. H. H. T. G. S. A. R. II, p. 634. 
 
 1720. Brewster County. Iron ore from the Chisos Mts. Anal. 
 
 1904 by S. H. W. T. M. S. A. 2613. 
 
 1721. Brown County. Sample from John Y. Rankin, Brownwood, 
 , Texas. Anal. 1903 by W. D. Blackburn. T. M. S. A. 2168. 
 
 1722. j Bui;net County. Soft hydrated iron ore from Marble Falls. 
 
 Anal, by J. H. H. T. G. S. A. R. 11, p. 635. 
 
 1723. Burnet County. Soft hydrated ore from south of Beaver 
 
 Creek. Anal.' by J. H. H. T. G. S. A. R. II, p. 635. 
 
 1724. Burnet County. Soft hydrated ore from west of Lion Moun- 
 
 tain. Anal, by L. B. M. T. G. S. A. R. II, p. 635. 
 17S5.| Burnet County. Two samples of iron ore from Dr. Edgar 
 1726. j Everhardt of the Univ. of Tex. T. A. S. Ill, p. 110. 
 
 1727. Coleman County. Iron ore from Santa Anna Gas Co., 4 
 
 miles east of Santa Anna. Anal, by J. E. S. B: A. 2459. 
 
 1728. El Paso County. Iron ore from old survey, Carrizo Mts. 
 
 Anal. 1904 by S. H. W. T. M. S. A. 2775. 
 
 1729. Gillispie County. Sample analyzed by Dr. E. Eyerhardt of 
 
 ■ the Univ. of Tex. in 1899. T. A. S. Ill, p. 110. 
 
 1730. Llano County. Soft hydrated iron ore from Iron Mountain. 
 
 Anal, by L. E. M. T. G. S. A. R. II, p. 635. 
 
 1731. Llano , County. Soft hydrated iron ore from Cold Creek. 
 
 Anal, by J. H. H. T. G. S. A. R. II, p. 635. 
 
 1732. Llano County. Soft hydrated iron ore from Riley Mts. 
 
 Anal, by L. E. M. T. G. S. A. R. II, p. 635. 
 
 1733. Llano County. Soft hydrated iron ore from Little Llano 
 
 Creek. Anal, by J. H. H. T. G. S. A. R. II, p. 635. 
 
 1734. Llano County. Soft hydrated iron ore from Babyhead Gap. 
 
 Anal, by J. H. H. T. G. S. A. R. II, p. 635. 
 
 1735. Llano County. Soft drydrated iron ore from Garner Cross- 
 
 ing on Llano River. Anal, by J-. H. H. T. G. S. A. R. 
 II, p. 635.. 
 
 1736. Llano County. North of point of Packsaddle Mountain. 
 
 Anal.^ by L. E. M. T. G. S. A. R. II, p. 635. 
 
 1737. Llano County. Soft hydrated iron ore from near Davidson's, 
 
 Pennington Creek. Anal, by L. E. M. T. G. S. A. R. II, 
 p. 635. 
 
 1738. Llano County. Soft hydrated iron ore from SuttoiS's, Pen- 
 
 nington Creek. Anal, by L. E. M. T. G. S. A. R. II, p. 635. 
 
 1739. Llano County. Sandy iron ore from north of east of Cas- 
 
 tell. Anal, by J. H. H. T. G. S. A. R. II, p. 634. 
 
Chemical Analyses of Texas Bocks and Minerals 105 
 
 Llano County. From Olive Mine, on the Little Llano River, 
 about 6 miles E.-N. E. of Llano, one mile south of the 
 
 1740. - Lone Grove Postoffice, and one mile north of the Llano 
 
 1741. River and the H. & T. C. Ry. Anal, by S. H. W. Sampled 
 
 1742. by Robert Linton of Atwater, Linton &, Atwater Mining 
 Engrs. for the Johnston-Elliott Co. of Dallas. U. S. G. S. 
 Polio 183, p., 13, and U. S. G. B. 450, p. 28. 
 
 1743. Llano County. Hematite from Babyhead Mt. Anal, by 
 
 J. H. H. T. G. S. A. R. II, p. 634. 
 
 1744. Llano County. Hematite from Lost Hollow. Anal, by J. 
 
 H. H. T. G. S. A. R. II, p. 634. 
 
 1745. Llano County. Iron ore from Baumann's. Anal, by J. H. H. 
 
 T. G. S. A. R II, p 635. 
 
 1746. ,Llano County. Sandy iron ore from the Brady road, east 
 
 of Smoothing Iron Mt. Anal, by J. H. H. T. G. S. A. R. 
 II, p. 634. 
 
 1747. Llano County. Sandy iron ore from Lone Grove. Anal, by 
 
 L. E. M. T..G. S. A. R. II, p. 634. 
 
 1748. Llano County. Hematite from near Castell. Anal, by L. E. 
 
 M. T. G. S A R. II, p 634. 
 
 1749. Llano County. Hematite from Iron Mt. Anal, by J. H. H. 
 
 T. G. S. A. R. II, p. 634. 
 
 1750. Llano County. Hematite from south of Packsaddle Mt. 
 
 Anal, by J. H. H. T. G. S. A. R. II, p. 634. 
 
 1751. Llano County. Hematite from near Packsaddle Mt. Anal. 
 
 by L. E. M. T. G. S. A. R. II, p. 634. 
 
 1752. Llano County. Hematite from Lower Lost Hollow. Anal. 
 
 by J. H. H. T. G. S. A. R. II p. 634. 
 
 1753. Llano County. Iron ore from near Magill Peak. Anal, by 
 
 L. E. M. T. G. S A R. fl, p. 635. 
 
 1754. Llano County. Iron ore from west of Christian Schneider's 
 
 house, near Castell. Anal, by J. H. H. T. G. S. A. R. 
 II, p. 635. 
 
 1755. Llano County. Iron Ore from Iron Mountain. Anal. 1904 b^ 
 
 S. H. W. T. M. S. A. 2609. 
 1756.] 
 
 1757. |. Llano County. Magnetite from Iron Mt. Anal. 1902 by 
 1758.J O. H. P. and S. H. W. T. M. S. B. 5, p. 51. 
 
 1759. Llano County. Iron ore from Chas. Roberts, Riley Mts. 
 
 Anal. 1904 by S. H. W. T. M. S. A. 2110. 
 
 1760. Llano County. Iroii ore from Section 13, Llano County. 
 
 Thickness 17 feet. Anal, by R. C. Wells of the U. S. G. S. 
 TJ. S. G. S. B. 450, p. 53. 
 
106 University of Texas' Bulletin 
 
 1761."] Llano County. Iron ore from near east end of line of out- 
 
 17 62. 1 crops on Elm Creek, north of Castell. Maximum thickness 
 
 1763.^ 2 feet. Anal, by R. C. Wells, of the U. S. G. S. U. S. ■ 
 
 j G. S. B. 450, p. 46. 
 
 1764. Llano County. Iron ore from Elm Creek, froni a poin: where 
 
 reef crosses the wagon track. Anal, by R. C. Wells of the 
 U. S. G. S. Maximum thickness, 2 feet. U. S. G. S. B. 
 450, p. 46. , 
 
 1765. Llano County. Iron ore from south of the Elm Creek, on hill 
 
 between creek and river, partly within the Schneider tract, 
 but extending across the eastern boundary line. Local 
 thickness 18 inches. Anal, by R. C. "Wells, analyst for the 
 'V. S. G. S. U. S. G. S. B. 450, p. 46. 
 
 1766. Llano County. General sample of surface iron ore from 
 
 Iron Mt. from private report of E. V. D'Invilliers, U. S. 
 G. S. B. 450, p. 39. 
 
 1767. Llano County. Sample of 126 pieces of ore at a depth of 
 
 50 feet in shaft. Report of E. V. D'Invilliers. Iron 
 Mountain. U. S. G. S. B. 450, p. 39. 
 
 1768. Llano County. Surface ore clippings, ]large boulders. 
 
 (Sampled by a representative of McGreath.) 'Report of 
 D'Invilliers. Iron Mt. U. S. G. S. B. 450, p. 39. 
 
 1769. Llano Count|y. Surface ore main exposure. Sampled by a 
 
 representative of McGreath. Report of D'Invilliers. U. S. 
 G. S. B. 450, p. 39. 
 
 1770. Llano County. Iron ore from Iron Mt. Prom shaft 8 feet 
 
 deep, south side of main exposure. McGreath. U. S. G. 
 S. B. 450, p. 39. 
 
 1771. Llano County. Iron Mountain. Prom shaft 12 feet deep, 
 
 north side of main exposure. Lower 8 feet of ore. E. V. 
 D. U. S. G. S; B. .450, p. 39. 
 
 1772. Llano County. Iron Mt. 150 yds. east of main exposure, 
 
 from cut 4 ft. deep. McGreath. U. S: G. S. B. 450, p. 39. 
 
 1773. Llano County. Iron Mt. Prom shaft at main exposure. 
 
 Ore from lower depth than 5 or 6 feet. Chiefly magnetic. 
 B. V. D. U. S. G. S. B. 450, p. 39. 
 
 1774. Llano County. Iron Mt. Tract. Sampled and analyzed 
 
 by Rattle and Nye. E. V. D. U. S. G. S. B. 450, p. 39. 
 
 1775. Llano County. Iron Mountain Mine, 50-ft. level, sample 
 
 taken by R. Linton for the Johnston-Elliott Co., of Dallas. 
 U. S. G. S. B. 450, p. 39. 
 
 1776. Llano County. Same as No. 1775. 
 
 1777. Llano County. Iron Mountain. Seven feet of new ore on 
 
 east wall of winze, 48-ft. level, sampled by Dr. W. B. 
 Phillips. Anal, by Rinaldo Williams, analyst chemist of 
 Birmingham, Ala. U. S. G. S. B. 450, p. 39. 
 
Chemical Analyses of Texas Bocks and Minerals 107 
 
 1778-1785. Llano County. These samples are type of Bessemer ore, 
 with moderate iron content. Represent 9 feet, 2 inches 
 of ore from third level mine, Olive Mine. Anal. 1893. Name 
 of anal^yst not given. Analyses furnished the U. S. G. S. 
 by Robert Linton of Dallas. U. S. G. S. B. 450, p. 29. 
 
 1786. Llano County. Magnetite from Babyhead Mt. Anal, by 
 J. H. H. T. G. S. A. R. II, p. 634. 
 
 1787-1791. Llano County. Magnetite from Iron Mountain. Anal, 
 by J. H. H. T. G. S. A. R. II, p. 634. 
 
 1792.1 Llano County. Magnetite from the Bader Tract. Survey 
 
 1793. j No. 33. Anal, by J. H. H. T. G. S. A. R. II, p. 634. 
 
 1794. Llano County. Magnetite from north of Llano River. Lode- 
 
 stone. Near Johnson Creek. Anal, by J. H. H. T. G. 
 S. A. R. II, p. 634. 
 
 1795. Mason County. Sandy iron ore from Caylor's Diggings. 
 
 Anal, by L. E. M. T. G. S. A. R. II, p. 634. 
 
 1796. Mason County. Hematite from 2 miles N. W. of Katemc^. 
 
 Anal, by L. E. M. T. G.'S. A. R. II, p. 634. 
 
 1797. Mason County. Soft hydrated iron ore from 7 miles west 
 
 of Mason. Anal, by J. H. H. T. G. S. A. R. II, p. 63 5. 
 
 1798. Mason County. Soft hydrated iron ore. From Survey 746. 
 
 Anal, by L. E. M. T. G. S. A. R. II, p. 634. 
 
 17 9 9. Mason County. Iron ore from James River. Anal, b^ L. E. 
 
 M. T. G. S. A R. II, p 635. 
 1800 Mason County. Hematite from Pontotoc. Anal, by J. H. H. 
 
 T. G. S. A. R. II, p. 634. 
 1801. Mason County. Iron ore from 5 miles east of Indianapolis. 
 
 Anal, by J. H. H. T. G. S. A. R. II, p. 635. 
 
 18 02. Mason County. Iron ore near Katemcy. Anal, by J. H. H. 
 
 T. G. S. A. R. II, p. 635. 
 
 1803. Mason County. Titanifefous iron ore found near Fleming. 
 
 Anal, b^ J. H. H. T. G. S. A. R. II, p. 635. 
 
 1804. Mason County. Hematite from H. A. Wroe of the Amer- 
 
 ican Natl. Bank, Austin. Anal, by J. E. S. B. A. 2009. 
 
 1805. Mason County. Iron ore from Todd Valley. Anal, by L. E. 
 
 M. T. G. S. A. R. II, p. 635. 
 
 1806. McCulloch County. Soft hydrated iron ore from Heard's 
 
 Diggings near Camp San Saba. Anal, by J. H. H. T. G. 
 S. A. R. II, p. 635. 
 
 1807. McCulloch County. Sandy iron ore from the San Saba River 
 
 near Voca. Anal, by L. E. M. T. G. S. A. R. II, p. 634. 
 
 1808. McCulloch County. Iron ore from 3 miles 'S. E. of Camp 
 
 S^n Saba. Anal, by L. E. M. T. G. S. A. R. II, p. 635. 
 
 1809. Presidio County. Magnetite from Shafter, east branch of 
 
 Cibolo Creek. Anal. 1903 by S. H. W. T. M. S. A. 2272. 
 
108 University of Texas Bulletin 
 
 1810. San Saba County. Iron ore from near Latham's. Anal. 
 
 by J. H. H. T. G. S. A. R. II, p. 635. 
 
 1811. San Saba County. Soft hydrated iron ore from Latham 
 
 Creek. Anal, by J. H. H. T. G. S. A. R. II, p. 635. 
 
 1812. San Saba Creek. Soft hydrated iron ore from Deep Creek, 
 
 Anal, by J. H. H, T. G. S. A. R. II, p. 635. 
 
 1813. San Saba Counter. Soft hydrated iron ore from Hinton 
 
 Creek. Anal, by J. H. H. T. G. S. A. R. II', p. 635. 
 
 ORES OTHER THAN IRON ORBS 
 
 Ores of gold, silver, copper, zinc, tin, and lead occur mostly ' 
 in the mountainous western part of Texas and in the ancient 
 rocks in the Central Mineral Region. The analyses presented 
 are to a large extent merely partial assays for some of these 
 metals. A separate group of these ores are the sulphides and 
 carbonates of copper oceuring in the Permian beds of the Cen- 
 tral northern part of the State. Copper was present in relative 
 abundance in the Permian seas, for there can be no doubt that 
 the copper in these beds is an original constituent in the rocks. 
 In the case of all other ores of the metals mentioned they have 
 evidently been introduced secondarily in veins and other ore 
 bodies. An exception should perhaps be made for the tin, which 
 no doubt was originally an ingredient in the El Paso granite. 
 
 As a whole, the ore analyses were classified as given in the origi- 
 nals, excepting in doubtful cases, where they were classified on the 
 basis of the most valuable constituents according to the current 
 market prices, given below: 
 
 Cu@$ 0.50 1b. 
 
 Zn @$0.20 lb. 
 
 W @ $ 2.00 lb. 
 
 Ag@$ 1.10 oz. 
 
 Mn@$2.00 1b. 
 
 U @f25.00 oz. 
 
 Pb@? 0.30 1b. 
 
 Hg@?0.20 oz. 
 
 Sn @ $ 1.90 lb, 
 
 Au@$37.50 oz. 
 
 Ti @$6.60 oz. 
 I. COPPER ORES 
 
 
 1814."! Burnet County. Copper ore from White Eagle Burnt Ore 
 1815.1 Co., near blacksmith shop, 5 miles w-est of Burnet. Anal. 
 1816.^ 1902 by S. H. W. T. M. S. A. No. 1572, 1573, and 15.75, 
 
 ' J respectively. 
 1817."| Burnet County. Sample of copper ore from Hooking Valley, 
 1818.^ 9 miles west of Burnet. Anal. 1913 by S. H. W- B. A. 
 J 569, and 570. 
 
Chemical Analyses of Texas Bocks, and Minerals 109 
 
 1819. Burnet County. Copper ore from Hooking Valley, submitted 
 
 \>j Paul Sheridan of Burnet. Anal. 1913 by S. H. W. 
 
 B. A. 714. 
 J 1820. Burnet County. Copper ore from Paul Sheridan of Burnet, 
 
 June 6, 1913. Sampled at Hooking Valley. Anal. 1913 
 
 by S. H. W. B. A. 713. 
 1821."] Burnet County. Samples from Hooking Valley, submitted 
 1822.1 by Paul Sheridan of Burnet. Anal, by S. H. W. for 
 1823.r copper only. T. M. S.. A. 715, 716, 717 and 718, re- 
 1824. spectlvely. 
 1825."! Burnet County. Sampled by Dr. Wm. B. Phillips Jan. 20, 
 
 1826. 1913, at "Main shaft dump. Lower shaft dump, and Main 
 
 1827. r shaft dump," respectively. Anal. 1913 by S. H. W. B. A. 
 
 475, 476, and 477, respectively. 
 
 1828. Burnet County. Copper ore labelled "Burnet Selected No. 
 
 5, White Eagle Copper Co." Anal. 1901 by S., H. W. T. M. 
 S. A. 284. 
 
 1829. Culberson County. Copper ore from Sec, 18, Blk. 54ya. 
 
 First 12 feet south side, 59-ft. level. Marked: "Prom 
 Pecos Mine," about 18 miles north of Van Horn. Anal, 
 by S. H. W. 1914. B. A. 1186. 
 ,1830. Culberson County. Second 12 ft. from shaft south of 
 50-ft. level. Sec. 18, Blk 54%, township No. 2. B. A. 
 1187. 
 
 1831. Culberson County. Copper ore from same location as 18 29. 
 
 Third 12 feet from south side of 50-ft. level. B. A. 1188. 
 
 1832. Culberson County. Copper ore from same location as 1829. 
 
 Fourth 12 feet from shaft 12 feet south side of 50-ft. 
 level. B. A. 1189. 
 
 1833. Culberson County. Copper ore from Pecos Mine, about IS 
 
 miles north of Van Horn. Sampled by S. H. W. Anal. 
 1914 by S. H. W. "Sample No. 4," north 12 ft. of north 
 end of 50-ft. level. B. A. 1190. 
 
 1834. Culberson County. Copper ore from Pecos Mine. "Sample 
 
 No. 6." Second 12 ft, from north end of 50-ft. level. 
 Anal. 1914 by S. H. W. B. A. 1191. 
 
 1835. Culberson County. Copper ore from Pecos Mine. Third 12 
 
 ft. from north end of 50-ft. level. Anal. 1914 by S. H. W. 
 B. A. 1192. 
 
 1836. Culberson County. Copper ore from Pecos Mine, about 18 
 miles north of Van Horn. Fourth 12 ft. from north end 
 
 of 50-ft. level. Anal. 1914 by S. H. W. B. A. 1193. 
 
 1837. Culberson County. Copper ore from Pecos Mine. "Sample 
 
 No. 9." Fifth 12 ft. from north end of 50-ft. level. Anal. 
 1914 by S. H. W. B. A. 1194. 
 
110 University of TeoMs Bulletin 
 
 1838. Culberson County. Copper ore from Pecos Copper Mine. 
 
 From sixth 12 ft, from north end of 50-ft. level. Anal. 
 1914 by S. H. W. B. A. 1195. 
 
 1839. Culberson . County. Copper ore from Pecos Mine. From 
 
 seventh 12 ft. from north end of 50-ft. level. Anal. 1914 
 by S. H. W. B. A. 1196. 
 18 40. Culberson County. Copper ore from Pecos Mine. Sample 
 No. 12. South end of south side of 100-ft. level, 12 feet. 
 Anal. 1914 by S. H. W. B. A. 1197. 
 
 1841. Culberson County.. Copper ore from Pecos Mine. Sample 
 
 No. 13 by S. H. W. Second 12 ft. of south end of south 
 side of lop-ft. level. Anal. 1914 by S. H. W. B. A. 1198. 
 
 1842. Culberson County. Copper ore from Pecos Mine Sample 
 
 No. 14, by S. H. W. Third 12 ft. of south end of south 
 side of 100-ft. level. Anal. 1914 by S. H. W. B. A. 1199. 
 
 1843. Culberson County. Copper ore from Pecos Mine. Sample 
 
 No. 15 by S. H. W. Fourth 12 ft. of south end of south 
 side of 100-ft. level. Anal. 1914 by S. H. W B. A. 1200. 
 
 1844. Culberson County. Copper ore from Pecos Mine. Sample 
 
 No. 16 by S. H. W. Fifth 12 ft from south end of south 
 side of 100-ft. level. Anal. 1914 by S. H. W. B. A. 1201. 
 
 1845. Culberson County. Copper ore from Pecos Mine. Sample 
 
 No. 1.7 by S. H. W. First 12 ft. of north end of 100-ft. 
 level. Anal. 1914 by S. H. W. B. A. 1202. 
 
 1846. Culberson County. Copper ore from Pecos Mine. Sample 
 
 No. 18 by S. H. W. Second 12 ft. north end of 100-ft. 
 level. Anal. 1914 by S. H. W. B. A. 1203. 
 
 1847. Culberson County. Copper ore from Pecos Mine. Sample 
 
 No. 19 by S. H. W. Third 12 ft. of north end of 100-ft. 
 level. Anal. 1914 by S. H. W. B. A. 1204. 
 
 1848. Culberson County. Copper ore from Pecos Mine. Sample 
 
 No. 20 by S. H. W. Fourth 12 ft. of north end of 100-ft. 
 level. Anal. 1914 by S. H. W. B. A. 1205. 
 
 1849. Culberson County. Copper ore from Pecos Mine. Sample 
 
 No. 21 by S. H. W. Fifth 12 ft. of north end of 100-ft. 
 level. Anal. 1914 by S. H. W. B. A. 1206. 
 
 1850. Culberson County. Copper ore from Pecos Mine. Sample 
 
 of one ton from lower level. "Grab sample." Anal. 1914 
 by S. H. W. B. A. 1208. 
 
 1852. Culberson County. Copper ore from T. R. Owen. Sampled 
 
 at Van Horn. Anal. 1901 by S. H. W. T. M. S. A. 1443. 
 
 1853. Culberson County. Copper ore from Pecos Mine, about 3 
 
 miles north of the Hazel Mine. Ore is mined in face of 
 35-ft. level. Anal. 1913 by S. H. W. B. A. 971. 
 
Chemical Analyses of Texas Bocks and Minerals 111 
 
 1854. Culberson County. Copper ore from Pecos Mine. Sample 
 
 mined in bottom of 110-ft. shaft. Anal. 1913 by S. H. W. 
 B. A. 972. 
 
 1855. Culberson County. Copper ore from Pecos Mine. Average 
 
 of ore mined in first ten feet of 35-ft. level. Anal. 191:3 
 by S. H. W. B. A.- 973. 
 
 1856. El Paso County. Copper ore from Crow's Nest Mine. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1777. 
 
 1857. El Paso County. Copper ore from the Hazel Mine, Sierra 
 
 Diablo Mts. Anal. 1902 by O. H. P. and S. H. W. T. M. 
 S. A. 1781. 
 
 1858. El Paso County. Copper ore from Sierra Blanca Mts. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1793. 
 
 1859. El Paso County. Copper ore from the Carrizo Mts. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1800. 
 
 1860. El Paso County. Copper ore from the Hazel Mine. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1804. 
 
 1861. El Paso County. Copper from the Sierra Blanca Mts. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1825. 
 
 1862. El Paso County. Copper ore from 15 miles north of Van 
 
 Horn. Anal. 1902 by O. H. P. and S. H. W. T. M. S. A 
 1836. 
 
 1863. El Paso County. Copper ore from the Sierra Blanca Mts. 
 
 Anal, by O. H. P. and S. H. W. T. M. S. A. 1845. 
 
 1864. El Paso County. Copper ore from Crow's Nest Mine, Carrizo 
 
 Mts. Anal. 1901 by S. H. W. T. M. S. A. 1121. 
 186 5. El Paso County. Copper from Hunter's Mine. Anal. 1901 
 by O. H. P. T. M. S. A. 1175. 
 
 1866. El Paso County. Copper ore from Black shaft. Sierra Diablo 
 
 Mts. Anal. 1901 by S. H. W. T. M. S. A. 1192. 
 
 1867. El Paso County. Copper ore from the David Harum Mine. 
 
 Anal. 1904 by S. H. W. T. M. S, A. 2718. 
 
 1868. Ford County. Copper ore from Crowell. Anal. 1903 by 
 
 S. H. W. T. M. S. A. 2080. 
 
 1869. Hardeman County. Sample of copper ore from this county, 
 
 exact locality not stated. Anal. 1902 by O. H. P. and 
 S. H. W. T. M. S. A. 1873. 
 
 1870. Llano County. Copper ore from Pecan Creek. Anal. 1902 
 
 by O. H. P. and S. H. W. T. M. S. A. 1798. 
 
 1871.] Llano County. Copper ore from the Babyhead Mts. Anal. 
 
 1872. J. 1902 by O. H. P. and S. H. W. T. M. S. A. 1817, and 
 J 1878, respectively. 
 
 1873. Llano County. Copper ore from Pecan Creek. Anal. 1902 
 
 by O. H. P. and S. H. W. T. M. S. A. 1806. 
 
112 University o.f Texas Bulletin 
 
 1874. Llano County. Copper ore from the Babyhead Mts. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1017. 
 
 1875. Mason County. Copper ore from" this county. Exact locality 
 
 not stated.. Anal. 1902 by O. H. P. and S. H. W. T. M. 
 S. A. 1876. 
 
 1876. Montague County. Copper ore from this county. Exact 
 
 locality not stated. Anal. 1902 by O. H. P. and S. H. W. 
 T. M. S. A. 1660. 
 
 1877. Presidio County. . Copper ore from Marfa. Sample sent to 
 
 Univ. Min. Surv. by J. A. Gillett, in 1901. Anal, by 
 S. H. W. T. M.S. A. 3228. 
 
 1878. Presidio County. Copper ore from this county, locality noc 
 
 definitely stated. Anal. 1903 by S. H. W. T. M. S. A. 
 
 2232. 
 1879."! Stonewall County. Copper ore from this county, but exact 
 1880. 1^ locality not stated.. Anal. Sept., 1901, by S. H. W. 
 1881. r T. M. S. A. 1222, 1244, 1245, and 1307, respectively. 
 1882.1 
 1883.. Stonewall County. Anal. Nov., 1902, by S. H. W. T. M. 
 
 S. A. 2012. 
 
 1884. Stonewall County. Copper' ore. AnaJ. Aug., 1902, by 
 
 O. H. P. and S. H. W. T. M. S. A. 1795. 
 
 1885. Taylor County. Copper ore. Sampled by W. B. P. AnaL 
 
 by O. H. P. and S. H. W. Aug., 1902. T. M. S. A. 1839. 
 
 11. SIIjVEB ore (See also under Cu., Pb, and Au ores.) 
 
 1886. Brewster County. Silver ore from the Chisos Mts. gent to- 
 
 Univ. Min. Surv.. by J., E. Van Riper of San Antonio. 
 Anal. 1901 by S. H. W. T. M. s!' A. 1501. 
 
 1887. Brewster County. ^Sample of silver ore from Section 10, 
 
 Block 238. Ai^al. 1901 by S. H. W. T. M. S. A. 3382. 
 
 1888. Burnet County. Silver ore from White Eagle Copper Co., 
 
 Burnet. Anal. 1901 by S. H. W. T. M. S. A. 283. 
 
 1889. El Paso County. iSilver ore from the Quitman Mts. Anal. 
 
 by Palm, Worrell, and Harper. T. M. S. A. 1705. 
 
 1890. El Paso County. Silver ore from the Quitman Mts. Anal. 
 
 by O. H. P. H. W. H., and S. H. W. T. M. S. A. 1761. 
 1891.] El Paso Country. Silver ore from Quitman Mts. Anal. 1902 by 
 1892.f Palm and Worrell. T. M. S. A. 1713 and 1716, respectively. 
 
 1893. El Paso Count|y. Silver ore from Carrizo Mts. Anal. 1902 
 
 by Palm and Worrell. T. M. S. A. 1728. 
 
 1894. El Paso County. Silver ore from Gray Mule Mine, Quit- 
 
 man Mts. Anal. 1902, by O. H. P. and S. H. W. T. M. 
 S. A. 1729. 
 
 1895. El Paso County. Silver ore from the Bonanza Mine, Quit- 
 
Chemical Analyses of Texas Bocks and Minerals 113 
 
 man Mts. Anal. 1902 by O. H. P. and S. H. W. T. M. 
 S. A. 1709. 
 
 1896. El Paso County. Silver ore from the Chinati Mts. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1730. 
 
 1897. El Paso County. Silver ore from tbe Carrizo Mts. Anal. 
 
 1902 b|y O. H. P. and S. H. W. T. M. S. A. 1742. 
 
 1898. El Paso County. Silver ore from the Hazel Mine. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1844. 
 
 1899. El Paso County. Silver ore from the Don Quixote Mine. 
 
 Anal. 1901 by S. H. W. T. M. S. A. No. 1119. 
 
 1900. El Paso Cpufity. Silver ore from Hazel Mine, 15 miles 
 
 north of Van Horn. Anal. 1902 by S. H. W. T. M. S. A. 
 1122. 
 
 1901. El Paso County. Silver ore from the Chinati Mts. Anal. 
 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1713. 
 
 1902. El Paso County. Silver ore from the Alice Roy Mine. Anal. 
 
 1901 by O. H. P. T. M. S. A. 1187. 
 
 1903. El Paso County. Silver ore from the Sancho Panza Mine. 
 
 Anal. 1902 by S. H. W. T. M. S. A. 1651. 
 
 1904. El Paso County. Silver ore from King Bee Mine. Anal. 
 
 1902 by S. H. W. T. M. S. A. 1652. 
 
 1905.] El Paso County. Silver ores from the Quitman Mts. T. M. 
 1906. J S. B. I, pp. 97-98. 
 
 1907. Jeff Davis County. Silver ore from this county, exact 
 
 locality not stated. Anal. 1903 by O. H. P. T. M. S. A. 
 1706. Pile 8-H. 
 
 1908. Llano County. Silver ore from Babp^head Mts. (?) Anal. 
 1902 by O. H. P. and S. H. W. T. M. S. A. 1743. 
 
 1909. Llano County. Silver ore from the old Babyhead Mts. 
 
 Anal, by S. H. W. Tex. Min. Surv. Pile 5-L. 
 
 1910. Presidio County. Silver ore from "Clbolo Mine." Anal. 
 
 by S. H. W. 1901. T. M. S. A. 1127. 
 1911.] Presidio County. Silver ore from Presidio Mine. Anal. 
 1912.}. 1901 by S. H. W. T. M. S. A. 1130, 1131, and 1132, 
 1913. J respectively. 
 
 1914. Presidio Country. Silver ore from Spanish Mine. Anal. 
 
 1901 by S. H. W. T. M. S. A. 1134. 
 
 1915. Presidio County. Sample of Sphalerite from Shatter Mine, 
 
 161B. Anal. 1901 by S. H. W. T. M. S. A. 1180. 
 
 1916. Presidio County. Sample of galenite, Shatter Mine, 130 B. 
 
 Anal. 1901 by S. H. W. T. M. S. A. 1185. 
 
 1917. Presidio County. ' Silver ore from Cibolo Mine. Anal. 1901 
 
 by S. H. W. T. M. S. A. 1654.' 
 
 1918. Presidio County. Silver ore from Presidio Mine. Anal. 
 
 1901 by S. H. W. T. M. S. A. 1655. 
 
114 University of Texas Bulletin 
 
 \ 
 1919. Presidio County. Silver ore from the Chinatl Mts. Anal. 
 
 1901 b,y S. H. W. T. M. S. A. 2772. 
 19 20. Presidio County. Silver ore from San Antonio canyon, west 
 
 of Shatter. Anal. 1903 by S.H. W. T. M. S. A. 2388. 
 
 1921. Presidio County. Silver ore from the Shafter Mine. Anal. 
 
 by S. H. W. T. M S A. 2723 
 
 III. LEAD ORE 
 
 1922. Brewster County. Sample of lead ore from near Alpine. Anal. 
 
 1904 by S. H. W. T. M. S. A. 2601. 
 
 1923. Burnet County. Sample of lead ore from Hooking Valley. 
 
 Sent in by Paul Sheridan of Burnet. Anal. 1913 b^ S. 
 H. W. B. A. 752. 
 19 24. Burnet County. Lead ore from Silver Mine Creek, in the 
 N. ,W. part of the County. Sampled by B. F. Hill. Anal. 
 1903 by S. H. W. T. M. S. A. 2175. 
 
 1925. Culberson County. Lead ore from Pecos Mine, 18 miles 
 
 north of Van Horn. Anal. 1914 by S. H. W. B. A. 1207. 
 
 1926. Culberson County. Lead ore from the Winner Tungsten 
 
 Mine, near Figure "2" Ranch. Brown ore from small 
 cave. Anal. 1913 by S. H. W. B. A. 969. 
 
 1927. Culberson County. Lead ore from Winner Tungsten Mine, 
 
 near face of drift. Ar.al. 1913 by S. H. W. B. A. 970. 
 
 1928. Culberson County. Sample of lead ore from Ed. Kiam of 
 
 Houston, from a tungsten mine in this county. Sampled 
 by S. H. W. on the Figure "2" Ranch. Anal. 1913 by 
 S. H. W. B. A. 1122. 
 19 29. El Paso County. Lead ore from north dump, Eagle Flat 
 Mountain. Block 69, Township 8, Sec. 2. Sampled by S. 
 H. W. Anal. 1913 by S. H. W. B. A. 944. 
 
 1930. El Paso County. Lead ore from south dump. Eagle F'lat 
 
 Mountain. Block 69, Township 8, Sec. 2. Sampled by 
 S. H. W. Anal. 1913 by S. H. W. B. A. 945. 
 
 1931. El Paso County. Lead ore from the Bonanza Mine, Quit- 
 
 man Mts. Anal. 1905 b|y O. H. P. T. M. S. A. 3251. 
 1932.] El Paso County. Lead ore from the Bonanza Mine, Qult- 
 
 1933. J man Mts. T. M. S. B. 5, p. 98. 
 
 1934. El Paso County. Lead ore from the Belle Mine, Quitman 
 
 Mts. T. M. S. B. 5, p. 98. 
 
 1935. El Paso County. Lead ore from Gray Mule, Quitman Mts. 
 
 T. M. S. B. 5, p. 98. 
 1936 ] Bl Paso County.- Lead ore from the Quitman Mts. T. M. 
 —1943^ S. B. 5, p. 98. 
 1944. Bl Paso County. Lead ore from Chief Mine, Quitman Mts. 
 
 T. M. S. B. 5, p. 98. 
 
Chemical Analyses of Texas Bocks and Minerals 115 
 
 1945. El Paso County. Lead ore from Mount Ord Range. T. M. 
 
 S. B. 5, p. 98. 
 
 1946. El Paso County. Lead ore from Don Quixote Mine. T. M. 
 
 S. B. 5, p. 98. 
 
 1947. El Paso County. Lead ore from the Parlin Mine. Sierra 
 
 Diablo Mts. T. M. S. B. 5, p. 98. 
 
 1948. El Paso Count|y. Lead ore from the Carrizo Mts. T. M. 
 
 S. B. 5, p. 98. 
 
 1949. Presidio County. Galena from the Chinati Mts. Anal. 1904 
 
 by S. H. W. T. M. S. A. 2772. 
 1950.] Presidio County. Lead ore from the Chinati Mts. T. G. 
 1951.J S. B. 5, p. 98. 
 
 IV. GOLD ORE. 
 
 1952. El Paso County. Gold ore from Hunter's Mine. Anal. 1902 
 
 by O. H. P. and S. H. W. T. M. S. A. 1797. 
 
 1953. El Paso County. Gold ore from Franklin Mts. Anal. 1902 
 
 by O, H. P. and S. H. W. T. M. S. A. 1678. 
 
 1954. El Paso County. Gold ore from the Sierra Blanca Mts. 
 
 Anal. 1902 by O. H. P. and S. H. W. T. M. S. A. 1679. 
 1955." 
 1956. 
 1957. 
 1958. 
 195 9. El Paso County. Gold ore from Sierra Blanca Mts. T. M. 
 
 S. B. 5, pp. 97-98. 
 
 1960. El Paso County. Gold ore from Franklin Mts. T. M. S. B. 
 
 5, pp. 97-98. 
 
 1961. El Paso County. Gold ore from Sierra St. Jago. Anal, by 
 
 O. H. P., S. H. W., and H. W. H. T. M. S. A. 1714. 
 
 1962. Llano County. Gold ore from Pecan Creek. Anal. 1902 by 
 
 O. H. P. T. M. S. A. 1708. 
 
 1963. San Saba County. Supposed gold ore from Cherokee. Anal. 
 
 by O. H. P. T. M. S. A. 1069. 
 
 V. ZINC ORE 
 
 1964. Burnet County. Zinc ore from Hooking Valley^ Sampled by 
 
 Paul Sheridan. Anal, by S. H. W. B. A. 7 92. 
 
 1965. Burnet County. ^ Zinc ore from Hooking Valley Mine. Sam- 
 
 pled by Paul Sheridan. Anal. 1913 by S. H. W. B. A. 799. 
 
 1966. Culberson County. Zinc ore from No. 1, Boracho Mine, 
 
 Sampled by J. A. U. Anal. 1913 by S. H. W. B. A.. 958. 
 
 1967. Culberson County. Zinc ore. No. 2, from country rock near 
 - open cut, Boracho Mine. Anal. 1913 by S. H. W. B. A. 959. 
 
 1969. Culberson County. Zinc ore from open cut No. 4, Boracho 
 
 Zinc Mine. Anal, by S. H. W. B. A. 964. 
 
 1970. Culberson County. Zinc ore from Slope 2, Boracho Mine. 
 
 El Paso County. Gold ore from the Quitman Mts. T. M. 
 S. B. 5, pp. 97-98. 
 
116 Vnivei-sity of Texas Bulletin 
 
 Composite sample across vein. Anal, by S. H. W. B. A. 
 965. 
 
 1971. Culberson County. Selected sample of zinc ore from open cut 
 
 No. 3 Boracho Mine. AnaJ. by S. H. W. 1913. B. A, 966. 
 
 1972. Culberson County. Zinc ore from composite of face in entry 
 
 No. 1, Boracho Mine. Anal. 1913 by S. H. W. B. A. 967. 
 1 El Paso County. Zinc ore from bottom, of 60-ft. winze, on 90- 
 
 1973.1 ft. level, Bonanza Mine, Quitman Mts. Anal, bjy O. H. P. 
 
 1974.J T. M. S. A. 3246. 
 
 1968. Parker County. Zinc Ore. Radiating black crystals and 
 plates in limestone 52 feet underground. N. W. part of 
 Parker Co., 22 miles due north'of Weatherford, just across 
 Wise County line, about 600 yards from Skein's Peak, on 
 farm of D. P. Matheson. Anal, by J. E. S. B. A. C320. 
 
 yi. MERCURY ORE 
 
 The following list consists entirely of analyses of Terlingua. 
 Brewster County mercury ores. There are no mercury ore analyses 
 from any other section of the State, at least such were not available. 
 Anal. No. 
 
 1975.) Picked sample from hole made on Study Claim, Terlingua 
 1976. J District. Anal. 1902 by S. H. W. T. M. S. A. 2027. 
 1977. Select mercury ore from McKinney claim. Terlingua Dis- 
 trict. Anal.' 1902 by S. H. W. T. M. S. A. 2030. 
 197 8. Cinnabar from Study Mine. Sec. 216, Blk. G. 4. Anal. 
 1902 by S. H. W. T. M. S. A. 2031. 
 
 1979. Selected cinnabar from Terlingua. Anal. 1902 by S. H. W. 
 
 T. M. S. A. 2032. 
 
 1980. Limestone spotted with cinnabar. Sec. 248, Blk. G. 4. 
 
 Anal. 1902 by S. H. W. T. M. S, A. 2033. 
 Mercury ore from Terlingua. L. E. Tegner Mine. No. 1, No. 
 2, and No. 3, respectively. Anal. 1902 by E. P. Schoch. 
 T. M. S. A. 1941, 1942, and 1943, respectively. 
 
 1981.~1 
 
 1982. 
 
 1983. 
 
 1984. 
 
 1985. 
 
 1986. 
 
 1987. 
 
 1988. 
 
 1989. 
 
 1990. 
 
 1991: 
 
 1992. 
 
 1993. 
 
 1994. 
 
 1995. 
 
 1996. 
 
 Mercury ore from Terlingua. Anal, by S. H. W. 1902. T. 
 M. S. A. 1954, 1955, 1956, 1957. 1960, and 1062, re- 
 spectively. 
 
 Natural cinnabar from the Colquitt-Tigner Mining Co. Ter- 
 lingua. Anal. 1903 by S. H. W. T. M. S. A. Nos. 2102, 
 2103, 2104, 2131, 2145, 2146, and 2185, respectively; 
 
Chemical Analyses of Texas Eocks and Minerals 117 
 
 1997. Mercury ore from east part of large cut and deep shaft. Sec- 
 
 tion 38, Blk. G. 12. Colqultt-Tigner Mining Co. Terlingua. 
 Anal. 1904 by S. H. W. T. Ivi. S. A. 2635. 
 
 1998. Ore from west end of large cut. Section 38, Blk. G-12. Col- 
 
 quitt-Tigner Mining Co. Anal. 1904 by S. H. W. T. M. 
 g. A. 2636. 
 
 1999. Mercury ore from Sec. 38, Blk. G-12, about 300 ft. S. W. 
 
 from large cut. Colquitt-Tigner Mining Co., Terlingua,. 
 Anal. 1904 by S. H. W. T. M. S. A. ^637. 
 aOOO. Ore from Cut No. 3, Section 38, Blk. G12, Terlingua Mining 
 Co. Anal. 1904 by S. H. W. T. M. S. A. 2887. 
 
 2001. Ore from same location as No. 2000. T. M. S. A. 2908. 
 
 2002. Ore from Cut No. 2, Sec. 39, Blk. G12, Terlingua Mining 
 
 Co. Anal. 1904 by S. H. W. T. M. S. A. 2892. 
 
 2003. Ore from cut No. 2, just east of Marfa wagon road on hill. 
 
 Terlingua Mining Co. Anal. 1904 by S. H. W. T. M. S. A. 
 
 2629. 
 2004.1 Mercury ore from Sec. 38, Blk. G12, of the Terlingua Mining 
 2005.^ Co. Anal. 1904 by S. H. W. T. M. S. A. 2743 and 2764. 
 
 Vn. MANGAKESE ORES 
 
 ^006. Dickens County. Manganese ore from near Dickens. Anal. 
 1905 by O. H. P. T. M. S. A. 3424. 
 
 2007. Gillespie County. Anal, by J. H. H. T. G. S. A. R. II, p. 
 
 607. 
 
 2008. Gillespie County. Anal, by J. H. H. T. G. S. A. R. II, p. 607. 
 
 2009. Llano County. Manganese ore from Chaney's Diggings. Anal. 
 
 by L. B. M. T. G. S. A. R. II,' p. 607. 
 -010. Marion County. Sample of nianganese ore from near Hughes' 
 
 Springs. Submitted by R. C. Hardy of Sulphur Springs. 
 
 Anal, by J. E. S. B. A. 2405. ■ 
 JUll.] Mason County. Manganese ore from Spiller Mine, 15 miles 
 iJ012.l N. E. of town of Mason. Analyses made by R. A. P. Pen- 
 2013.] rose, Jr. U. S. G. S. B. 427, p. 125. 
 2014. Mason Country. Manganese ore from near Harper's Fall 
 
 Creek, 7 miles west of Castell, Anal, by L. E. M. T. G. 
 
 S. A. II, p. 607. 
 -,014a. Val. Verde County. The following 12 samples were collected 
 
 b^ John R. Roberts in 1918 and analyzed by J. E. S., B. A. 
 
 C701 to C713: 
 
 1. From ore in place in the Eagle Ford formation near 
 
 Feely. 
 
 2. Location same as Np; 1. 
 
 3. Taken from' pit on Survey 42, East Line of Red 
 
 River Railway Co., Block 52, 7 mi. north of 
 Shumla. 
 
118 University of Texas Bulletin 
 
 4. Taken from dump at pit where sample No. 3 was 
 
 taken. 
 
 5. Low grade ore in bottom bed exposed in west wall 
 
 of trench on Section 62, Bast Line of Red River 
 R. R. Co., Block 52. 
 
 6. High grade ore in upper bed in trench, same location 
 
 as sample No. 5. 
 
 7. Composite of samples Nos. 5 and 6. 
 
 8. Taken from ore in place in trench, 1% mi. west of 
 
 Shumla. 
 
 9. Ore in place in trench on Survey 63, Block 5 2, Bast 
 
 Line of Red River R. R. Co. 
 
 10. From dump at Glory-hole % mi. west of Shumla. 
 
 11. Taken from Scherer & Wall's shipping platform at 
 
 at Shumla. 
 
 12. Taken from dump at trench. Survey 63, Bast Line 
 
 of Red River R. R. Co., Block 52. 
 
 I VIU. TITANIUM ORE 
 
 2015. Mason County. Titanium ore from Wakefield Iron and 
 
 Land Co. Sample taken in northeastern part of the 
 county. Sent to Lab. of Univ. Bur. Ec. Geol, for analysis 
 Nov., 1915, by N. J. Badu, Llano, Texas. Anal, by J. E. S. 
 B. A. 2835. 
 
 IX. TUNGSTEN ORE 
 
 The following eight analyses of tungsten ore were made on sam- 
 ples from Section 20, Block 66, Township 5, Texas and Pacific Ry. 
 Culberson County. All analyses were made in 1911 by S. H. Wor- 
 rell in the laboratory of the Univ. Bureau of Be. Geology. 
 Anal. No. 
 
 2016. Sample of tungsten ore from a small porphyritio intrusion 
 
 about 6 Inches wide in the bottom of the opening. B. A., 
 116. 
 
 2017. Sample from same place as 2016, but badly weathered and 
 
 oxidized. B. A. 117. 
 
 2018. Vertical stringer along right side of opening, about 2 inches 
 
 thick. B. A. 118. 
 
 2019. General sample of the small pile of ore to the north of the 
 
 opening and presumably sorted out of the material from 
 the excavation. Sept., 1911, by S. H. W. 
 
 2020. A general sample of the vein on both sides of the tunnel, 
 
 supposed to represent, an average of Nos. 7 and 9 follow- 
 ing, but entirely separate and distinct from them. Taken. 
 as a check. B. A. 121. 
 
Chemical Analyses of Texas. Bocks and Minerals 119 
 
 2021. An average sample from north portion down to the change 
 
 In dip. B. A. 122. 
 
 2022. An average sample of the bottom portion of the tunnel he- 
 
 low where the change in dip occurs. 
 
 2023. An average sample taken on the south side. B. A. 124. 
 
 X. URANIUM ORE 
 
 2024,1 Burnet County. Samples of uranium ore taken near Bur- 
 2025.1 net. Sent in by Paul Sheridan of Burnet. Anal. Jan. 6, 
 J 1917, by J. B. S. B. A. C403 and C 404. 
 
 XI. SUIi'PHUR ORE 
 
 Introductory Note. — The siilphnr ores of wbi"h analyses av;^ 
 srivcn have been pollccted bv "R. L. Poveh in connection with his 
 study of their deposits, and the latter, as well as the samples, 
 have been published in University of Texas Bulletin No. 1722, 
 "The Eustler Springs Sulphur Deposits", to which the reader 
 is referred for further particulars coneernino- these samples. 
 
 Anal. No. 
 
 3075. Culberson County. Medium and high grade sulphur ore, 
 
 from the Rustler Spring Sulphur Field. Picked sample of 
 draw brown, thin irregularly banded, clay-Hko sulphur from 
 Johnson Prospect. Analyzed by J. E. S. B. A, C-394. 
 
 3076. Culberson County. Same as above, except picked sample of 
 
 brown, earthy material from the main exposure at the 
 Kyle Prospect. Anal. 1917 by J. E. S. B. A. C-390. 
 
 3077. Culberson County. Same as above, except picked sample of 
 
 yellow conglomerated inaterial from the main exposure 
 at the Kyle Prospect. Anal. 1917 by J. E. S., B. A., C-389. 
 
 3078. Culberson County. Same as above, except black gypsiferous 
 
 material from the dump at pit No. 5, on the Spann Pelch 
 holdings. Analyzed 1917 by J. E. S. B. A. C-386. 
 
 3079. Culberson County. Same as above, except dark gypsiferous 
 
 conglomerated material from the hard conglomerate layer 
 on the north side of locality 8 of the property of Michigan 
 Sulphur and Oil Co. Analyzed 1917 by J. E. S. B. A. 
 C-374. 
 
 3080. Culberson County. Same as above, except picked sample of 
 
 dark gypsiferous material from above the hard conglom- 
 erate layer mentioned under sample No. 5. Analyzed 1917 
 by J. E. S. B. A. C-381. 
 
 3081. Culberson County. Same as above, except mixed brown and 
 
 black conglomeratic material from the S. W. corner of 
 
120 University of Texas Bulletin 
 
 locality 8. Some of the black material contains metallic 
 sulphides. From the Michigan Sulphur and Oil Co. 
 Analyzed 1917 by J. E.' S. B. A. C-375 and C-376. 
 
 3082. Culberson County. Same as above, except altered con- 
 
 glomerate from the north side of locality 8, marked on 
 sketch map of Michigan Sulphur and Oil Co., property. 
 Analyzed 1917 by J. B. S. B. A. C-377. 
 
 3083. Culberson, Country. Same as above, except picked sample 
 
 of black gypsiferous material from locality 16, marked on 
 sketch map of Michigan Sjilphur and Oil Co. Contains 
 cream-colored or kaolin-like and greenish-yellow crystal- 
 lized sulphur. Analyzed 1917 by J. E. S. B. A. C-379 
 and C-380. 
 
 3084. Culberson County. Brown earthy matMial overlying the 
 
 material of serial number 3083. Analyzed by J. E. S. 
 
 B. A. C-382. 
 80 85. Culberson County. Picked sample of brown earthy and black 
 
 conglomerate material from locality marked 13 on sketch 
 
 map of Michigan Sulphur and Oil Co. property. Analyzed 
 
 1917 by J. E. S. B. A. C-378. 
 S086. Culberson County, Sulphur ore. Picked sample of gypsite 
 
 from the Georgetown Prospect. Analyzed 1917 by J. E. S. 
 
 B. A. C-393. 
 .3087. Culberson County. Sulphur ore. Picked sample of brown 
 
 earthy siliceous material from the main exposure at the 
 
 Cooksey Prospect. Analyzed 1917 by J. E. S. B. A. 
 
 C387. 
 
 3088. Culberson County. Sulphur ore. Black banded gypsiferous 
 
 material from the Cooksey Prospect. Analyzed 1917 by 
 J. E. S. B. A. C-388. 
 
 3089. Culberson County. Sulphur ore. Yellow incrustation now 
 
 being deposited at Stinking Seep. Anal. 1917 by J. E. S. 
 B. A. C-395. 
 
 3090. Culberson County. Sulphur ore. Picked sample of sulphur 
 
 from near Walker's Ranch, probably in the southwest 
 corner of Section 4, Block 109. Analyzed 1917 by J. B. 
 S. B, A. C-391 and C-392. 
 30 91. Culberson County. Suiphur ore. Sample of massive sulphur 
 from the easit side of the east hill. Grant Mines Property. 
 Analyzed 1917 by J. E. S^ B. A. C-396. 
 
 3092. Culberson County. Sulphur ore. Sample of gypsite from 
 
 the University lands. Analyzed 1917 by J. E. g. B. A. 
 C-383. 
 
 3093. Culberson County. Analysis of sulphur-bearing deposits 
 
 from the Rustler Springs Sulphur Field. Analyzed by J. 
 E. S. 1917. Drab-colored porous rock containing much 
 
Chemical Analyses of Texas. Bocks and Minerals 121 
 
 selenite. From the center of Section 34, Block 70. Sam- 
 ple taken by Dr. J. A. Udden. B. A. C-421. 
 
 3094. Culberson County. Same as above, except samjple was of 
 
 jpure white clay-like material, containing considerable 
 gypsum. From the S, E. corner of Section 13, Block 70. 
 Sampled by J. A. U. Analyzed 1917 by J. E. S. B. A. 
 C-422. 
 
 3095. Culberson County. Same as above, except sample was clay 
 
 from S. E. corner. Section 13, Block 70. Sample taken by 
 J. A. Martin, Jr., To^ah, Texas. Analyzed 1917 by J. E. S. 
 C-426. 
 
 3096. Culberson County. Same as above, except sample was silcious 
 
 gypsite. Typical rock from the Johnson Prospect. Analyzed 
 1917byJ. B. S. B. A. C-425. 
 
 3097. Culberson County. Same as above, except sample was dark 
 
 gypsiferous and conglomeratic material, from beneath the 
 ■hard conglomerate layer on the north side of locality 
 marked 8, on the sketch map of the Michigan Sulphur and 
 Oil Co. property. Analyzed 1917 by J. E. S.- B. A. C-423. 
 
 3098. Culberson County. Same as above, except sample was typical 
 
 brown earthy material from the main exposure at the 
 
 Cooksey Prospect. Analyzed 1917 by J. E. S. B. A. C-424. 
 3098a. Pecos County. Sulphur ore from DuPont No. 1, 14 miles 
 
 north of Ft. Stockton. Analyzed 1917 by J. E. S. B. A. 
 
 C-524. 
 3098b. Pecos County. Sulphur ore from Kinsella Well, 14 miles 
 
 north of Ft. Stockton. Analyzed 1917 by J. E. S. B. A. 
 
 C-524a. 
 
 POTASH SOURCES 
 
 3157. Brewster County. Samples of white crystals as picked up 
 
 at their source. From Aqua Frio Mountain, 65 miles 
 southwest of Marathon. Samples secured by Dr. G. W. 
 Worthington and Mr. J. T. Robison, State Land Commic- 
 sioner. Analyzed Nov. 15, 19r3, by J. E. S. B. A. No. 
 CSl? (1). 
 
 3158. Brewster County. iSample of bluish-grey rock mixed with 
 
 •crushed, water soluble crystals. Same source as 3157 
 and collected by same parties. B. A. No. C819 (2). 
 
 3159. Brewster County. Sample of white rock with dark spots 
 
 and streaks. Same source as 3157. B. A. No. C819 (3). 
 
 3099. Potter County. Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Rock Salt." 
 Depth below surface 875-925 feet. Study made by Dr. 
 J. A. Udden. Analyzed 1915 by J. E. S. B. A. 2193. 
 
 3100. Potter County. Boden boring. Potash In the Texas 
 
122 University of Texas Bulletin 
 
 Permian. Nature and condition of sample, "Rock Salt." 
 Depth 875-925 feet. Analyzed 1915 by J. B. S. B. A. 2257. 
 
 3101. Potter- County. Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Crystals of, 
 
 rock salt in anhydrite." Depth 875-925 feet. Analyzed 
 by J. B. S. 1915. B. A. 2258. 
 
 3102. Potter County. Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Rock Salt 
 Containing Some Red Fragments." Depth 875-925 feet. 
 Analyzed by J. E. S. 1915. B. A. 2280. 
 
 3103. Potter County. ''Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Rock Salt." 
 
 Depth 875-925 feet. Analyzed by J. E. S. 1915. B. A. 
 2274. 
 
 3104. Potter County. Boden boring. Potash in the Texas 
 
 Permian' Nature and condition of sample, "Rock Salt." 
 Depth 1290-1460 feet. Analyzed by J. B. S. 1915. B. 
 
 A. 2282. 
 
 3105. Potter" County. Boden Boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Rock Salt." 
 Depth 1290-1460 feet. Analyzed by J. B'. S. 1915. B. A. 
 2283. 
 
 3106. Potter County. Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Rock Salt 
 
 from upper part of dump." Analyzed by J. B. S. 1915. 
 
 B. A. 2335. 
 
 3107. Potter County Boden boripg. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Rock Salt 
 
 from upper part of dump." Analyzed by J. E. S. 1915. 
 B. A. 2273. 
 
 3108. Potter County. Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Rock Salt 
 from upper part of dump." Analyzed by J. E. S. 1915. 
 B. A. 2334. 
 
 3109. Potter County. Boden boring. Potash in the Texas 
 
 Permian. Same as above. B. A. 2275. 
 I 
 
 3110. Potter County. Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Rook Salt 
 
 from middle part of dump." Analyzed by J. E. S. 1915. 
 B. A. 2276. 
 
 3111. Potter County. Boden boring. Pptash in the Texas 
 
 Permian. Nature and condition of sample, "Rock Salt 
 from lower part of dump." Analyzed by by J. E. S. 1915. 
 B. A. 2284. 
 
 3112. Potter County. 3112-3113 same as above. B. A. 2278 and 
 
 2285. 
 
Chemical Analyses of Texas Rocks and Minerals 123. 
 
 3114. Potter County. Boden boring. Potash in tbe Texas 
 
 Permian. Nature and condition of sample, "Rock Salt 
 in a matrix of anhydrite." Analyzed by J. B. S. 1915. 
 B. A. 2279. 
 
 3115. Potter County. Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Some colorless 
 salt present." Depth 870-930 feet. Analyzed by J. E. S. 
 1915. B. A. 2281. 
 
 3116. Potter County. Boden boring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "All red salt." 
 Depth 875-925 feet. Analyzed by J. E. S. 1915. B. A. 
 2193. 
 
 3117. Potter County. Boden boring. Potash in the Texas. 
 
 Permian. Nature and condition of sample, "Taken from 
 dump, some colorless salt present." Analyzed by J. E. S. 
 1915. B. A. 2336. 
 
 3118. Randall County. Miller bbring. Potash in the Texas 
 
 Permian. Nature and condition of sample, "Cuttings of 
 rock salt, no color." Depth 1300 feet. Analyzed by J. 
 E. S. 1915. B. A. 2293. 
 
 3119. Randal County. Miller boring. Potash in the Texa^ 
 
 . Permian. Sample, "Cuttings of rock, some yellow." Depth 
 1300 feet. Analyzed by J. E. S. 1915. B. A. 2295. 
 
 3120. Randall County. Miller boring. Potash in the Texas. 
 
 Permian. Sample, "Cuttings taken on dump." Depth, 
 middle of dump. Analyzed by J. E. S. 1915. B. A. 2296. 
 
 3121. Randall County. Miller boring. Potash in the Texas 
 
 Permian. Sample, "Cuttings taken on dump, some reddish 
 fragments." Middle of dump. Analyzed by J. E. S. 1915, 
 B. A. 2297. 
 
 3122. Randall County. Miller boring. Potash in the Texas 
 
 Permian, Sample same as above. Analyzed by J. E. 3. 
 1915. B. A. 2294. 
 
 3123. Randall County. Miller boring. Potash in the Texas 
 
 Permian. "Cuttings taken from loWer part of dump." 
 Analyzed by J. E. S. 1915. B. A. 2287. 
 
 3124. Randall County. Miller boring. Potash in the Texas 
 
 Permian. "Cuttings' taken from lower part of dump." 
 Analyzed by J. E. S. 1915. B. A. 2292. 
 
 3125. Randall County. Miller boring. Potash in the Texas 
 
 Permian "Efflorescent salt on surface of dump.'" Analyzed 
 by J. E. S. 1915. B. A. 2289. 
 
 3126. Randall County. Miller boring. Potash in the Texas 
 
 Permian. "Cuttings taken on dump.' Analyzed by J, 
 E. S., 1915. B. A. 2298. 
 
 3127. Randall County. Miller boring. Potash in the Texas 
 
124 University of Texas Bulletin 
 
 Permian. "Cuttings taken on dump, much shale present." 
 Analyzed by J. E. S. 1915. B. A. 2291. 
 
 3128. Randall County. Miller horning. Potash in the Texas 
 
 Permian. "Cuttings taken from dump, some red salt 
 present." Analyzed by J. B. S. 1915. B. A. 2288. 
 
 3129. Randall County. Miller boring. Potash in the Texas 
 
 Permian. "Picked red salt fragments." Depth 1500-1700 
 feet. Analyzed by J. E. S. 1915. B. A. 2215. 
 
 3130. Randall County. Miller boring. Potash In the Texas 
 
 Permian. "Picked fragments containing some red salt." 
 Depth 1700-2100 feet. Analyzed by, J. E. S. 1915. B. 
 A. 2220. 
 
 3131. Randall County. Miller boring. Potash in the Texas 
 
 Permian. Same as above. B. A. 2216. 
 
 3132. Randall County. Miller boring. Potash in the Texas 
 
 Permian. "Colorless salt in anhydrite." Depth 1700 feet. 
 Analyzed by J. E. S. 1915. B. A. 2290. 
 2545a. Tom Green County. Potash — in water from well four miles 
 .north of San Angelo, on ranch of J. W. Harris. Depth 
 of well, 2448 ft. Plow 106 gallons per minute. Ana- 
 lyized Aug. 3, 1918, by J. B. S. B. A. C732. Analytical 
 results are given in Part 2 under No. 2545a which is 
 placed with the water analyses. 
 
 3160. Terry County. Potash in "Salt Lake". Analyses made 
 
 by Ft. Worth Laboratories, Pres. F. B. Porter, March 13, 
 1919. Entered in U. of T. Records under B. A., C974. 
 
 NITKIATE SOUBOE8 
 
 3157. 1 Brewster County. See same numbers under Potash Sources 
 
 3158. [. above. 
 3159. J 
 
 3161. Presidio County. Soda Niter. Prom T. R. Owen. Can- 
 
 lelarla. Contained in very hard dense trachyte, inclining 
 towards porphyrytrachyte. Inclusions of sanidin and 
 labradorite. Partial analysis' by E. B. P. B. A. No. 30. 
 
 3162. San Saba County. Samples of porous (washed out) lime- 
 
 stone rock with crystalline salt in interstices. Found 3 
 miles east of San Saba, on B. Oilman Survey No. 34 now 
 owned by E. A. Petty. Sample secured by C. M. Ellis. 
 Analyzed Feb. 6, 1919 by J. B. S. B. A. No. C858. 
 
Chemical Analyses of Texas Bocks and Minerals 125 
 
 NATUEAL GAS 
 
 OTE ON SouECES, COMPOSITION', Etc. — Natural gas has 
 L discovered in small quantities in nearly all parts and 
 lations of the state. Productive pools of commercial 
 ortance occur at Petrolia and Moran in the Peniisj'l- 
 ian rocks, and at Mexia, and Piedras Pintas in the upper 
 taeeous sediments. A peculiarity of the Pennsylvanian gas 
 ts large content of nitrogen. An interesting fact in this 
 lection is that many of the deeper shales of the Pennsyl- 
 ian rocks yield much ammonia on distillation, 
 urthermore, — the wells in the Petrolia field furnish helium, 
 greatest amount being 1%. The U. S. Government is cx^ 
 ting helium from these gases. The gas must contain more 
 1 0.5% of helium to make its extraction commercially profit- 
 
 1. No. 
 
 5. Clay County. Sample from Wichita Falls. Anal. 1912 by 
 
 S. H. W. B. A. 170. 
 7. Clay County. Sample of natural gas from Petrolia Field. 
 
 Anal, by W. M. Russell, gas inspector in Ft. Worth. U. T. 
 
 B. 307, p. 80. 
 i. Clay County. Natural gas fom the Patrolia field. Anal, by 
 
 the United Gas and Improvement Co. of Philadelphia, Pa. 
 
 Sept. 1909. U. T. B. 307, p. 80. 
 J. Clay County. Natural gas from Petrolia. Anal, by United 
 
 Gas and Improvement Co. of Philadelphia, Pa. Anal. 1910. 
 
 U. T. B. 307, p. 80. 
 3. Clay County. Natural gas from Petrolia Field, sampled 
 
 from pipe line in Dallas. Anal. 1912 by S. H. W. U. T. B. 
 
 307, p. 80. 
 I. Clay County. Sample of natural gas from Petrolia Field, 
 
 sample taken from main in Ft. Worth, Texas. Anal. 1913 
 
 by S. H. W. U. T. B. 307, p. 80. 
 i. Clay County. Natural gas from the Lone Star Gas. Co., Ft. 
 
 Worth. Anal. '1916 by J. E. S. iB. A. C253. 
 J. Clay County. Sample of natural gas taken from main of the 
 
 North Texas Gas Co. at Wichita Falls. Sampled by W. B. 
 
 Phillips, Dec. 16, 1911., Anal. b|y S. H. W. B. A. 158. 
 i. Clay County. Sample of natural gas taken from main at the 
 
 plant of the Wichita Falls Grain and Elevator Co. by 
 
 W. B. P. Dec. 19, 1911. Anal, by S. H. W. B. A. 159. 
 
126 University of Texas Bulletin 
 
 2125. Clay County. Sampled at main of the North Texas Gas Co., 
 Wichita Palls. Anal. 1912 by S. H. W. B. A. 170. 
 
 212 6. Clay County. Natural gas, sampled at main in Ft. Worth 
 by C. W. Sears. Anal. 1912 by S. H. W. B. A. 171. 
 
 2127. Clay County. Natural gas from Petrolia, taken from main 
 
 in Dallas, 1912, by C. W. Tippy. Anal. 1912 by S. H. W. 
 B. A. 172. 
 
 2128. Clay County. Sample of natural gas from main of the North 
 
 Texas Gas Co., piped to Wichita Falls. Anal. Jan. 30, 
 
 1913 by S. H. W. B. A. 177. 
 
 212 9. Clay County. Natural Gas from Petrolia from the mains of 
 the Dallas Gas Co., Dallas. Anal. Feb. 1913 by S. H. W. 
 B. A. 191. 
 
 2130. Coleman County. Natural gas from the Santa Anna Gas Co. 
 
 of Santa. Anal. 1916 by J. E S. B. A. C171. 
 2130a Coleman County. From Santa Anna Gas Co., Santa Anna. 
 Anal. 1918 by J. B. S., B. A. C747. 
 
 2131. Erath County. Natural gas from Thurber. Anal. Jan. 24, 
 
 1914 by S. H. W. B. A. 1162. 
 
 2132. Gonzales County. Gas from well 9 miles west of Gonzales. 
 
 Anal, by S. H. W. U. T. B. 307. p. 80. 
 
 2133. Houston County. Natural gas from 14- miles west of Crockett. 
 
 Anal, by S. H. W. U. T. B. 307, p. 80. 
 
 2134. Limestone County. Natural gas from the Mexia-Groesbeck 
 
 field. Sample taken from Mexia Oil and Gas Co.'s Adam- 
 son Well, near the north end of the gas field. Anal, by G. A. 
 . Burrell of the Bureau of Mines. U. S. G. S. B. 629, p. 102. 
 
 2135. Limestone County. Natural gas from the Central Texas Oil 
 
 Co.'s Gamble Well, between the Adamson Well and the 
 Navasota River. Anal, by G. A. Burrell of the U. S. Bureau- 
 of Mines. U. S. G. S. B. 629, p. 102. 
 
 2136. Limestone County. Natural gas from the Posey Well, No. 1, 
 
 of the Herring Oil and Gas Co., a short distance south of 
 the I«ravasota River. Anal, by G. A. Burrell of the U. S. 
 Bureau of Mines, Washington. U. S. G. S. B. 629, p. 102. 
 
 2137. Limestone County. Natural gas from the Anglin Well of the 
 
 Robinson Oil and Gas Co., Mexia-Groesbeck Field at the 
 south end of the field. Anal, bpr G. A. Burrell, of the U. S. 
 Bureau of Mines. U. S. ft. S. B. 629 p. 102. 
 
 2138. Maverick County. Natural gas from the Fleming and David- 
 
 son Well. Depth 712 feet. Anal, by S. H. W. U. T. B. 
 307 p. 80. 
 
 2139. McMuUen County. Sample of natural gas from Crowther, 
 
 Boston and Texas corporation. Anal, by S. H. W. U. T. B. 
 307, p. 80. 
 
 2140. Montgomery County. Sample of natural gas marked: 
 
Ghemical Analyses of Texas Rocks and Minerals 127 
 
 "South Texas Developing Co., Well No. 1," Montgomery 
 
 County." Anal. 1915 by J. E. S. B. A. 2261. 
 2141. Navarro County. Prom Navarro County Oil Field. J. W. S. 
 
 E. Vol. IX, p. 588. (Dec. 1904.) 
 2'142. Palo Pinto County. Strawn Oil Meld, just west of the 
 
 town of Strawn in southwestern part of the county. From 
 
 the Stuart Bros. Well No. 10, (Texas and PaclHo Coal Co. 
 
 No. 37), from pipe line % mile from well. Anal, by G. A. 
 
 Burrell of the Bureau of Mines. U. T. B. 307, p. 80. 
 
 2143. Palo Pinto County. Natural gas from the Texas and Pacific 
 
 Well No. 15, from pipe line 1 mile from the well. Anal. 
 1915 by G. A. BurrelT of the Bureau of Mines. U. T. B. 
 307, p. 80. 
 
 2144. Palo Pinto County. Natural gas from the Dallas Gas and 
 
 Fuel Co. of Dallas. Anal. 1901 by S. H. W. and O. H. P. 
 T. M. S. A. 1323. 
 
 2145. Red River County. Natural gas bubbling up through the 
 
 Red River at the mouth of Cask Creek. Anal. 1912 by 
 S. H. W. B. A. 197. 
 
 2146. Robertson County. Sample from Corsicana Petroleum Co., 
 
 Dallas. Marked "From well on A. J. Adams farm near 
 Hearne." Anal, by J. E. S. B. A. 2460. 
 214V. San Patricio County. Natural gas from well at Gregory. 
 Anal. 1914 by J. E. S. B. A. 2128. 
 
 2148. San Patricio County. Sample of natural gas from Well No. 
 
 2 of the White Point Oil and Gas Development Co. about 
 8 or 9 miles northwest of Corpus Christi. Anal. 1914 by 
 J. E. S. B. A. 2092. 
 
 2149. Shackelford County Natural gas from gas line 16 miles 
 
 from well at Moran. Sampled at main of Lone Star Gas Co., 
 Ft. Worth. ;Anal. by S. H. W. U. T. B. 307, p. 80. 
 
 2150. Trinity County. Natural gas from spring one mile east of 
 
 town of Trinity. Anal, by S. H. W. U. T. B. 307, p. 80. 
 
 2151. Webb County. Sample of the natural gas supplied to city 
 
 of Laredo from Reiser by the Border Gas Co. Anal, by 
 S. H. W. B. A. 311. U. T. B. 307, p. 80. 
 
 2152. Webb County. Same as 2151. U. T. B. 307, p. 80. 
 
 2153. Zapata County. Natural gas received from Laredo marked 
 
 "Well No. 1, on J. D. Jennings farm, in Section 207, Za- 
 pata County about 30 miles south of Aguilares." Anal. 
 1914 by J. E. S. B. A.' 1986. 
 
128 University of Texas Bulletin 
 
 WATER 
 
 Relation of Composition to Source. — It migM be expected 
 that waters should be classified as stagnant surface waters 
 running surface waters, spring waters, and shallow and deep 
 well waters, and that the latter may be further classified as 
 coming from different strata with more or less inidividual 
 characteristics as to the solutions furnished. However, it 
 is impossible to carry out such a classification in a categori- 
 cal manner. The greater part of the time our streams of 
 central and west Texas, except those of largest size, are not run- 
 ning, and the water held in pools of the larger or smaller size can 
 be found in all degrees of concentration due to evaporation, pre- 
 cipita,tion and natural filtering through sands. Some of our 
 streams disappear in porous sands, silts and even porous lime- 
 stones, to appear again at other points as springs. It is difficult 
 also to draw distinctions between wells and springs in many 
 cases. Much of the drainage of the west is underground in lime- 
 stones and appears as large springs which continue their flow as 
 small and permanent streams. Shallow wells and deep wells 
 would be an entirely arbitrary distinction of no value. 
 
 A geologic classification can be made in many eases, but in 
 other cases, again, it cannot be made ion account of a lack of 
 knowledge of the condition of the well at the time the samples 
 were taken. Thus in many regions, bore holes penetrate several 
 different water-bearing horizons which will, mingle in the pro- 
 duct of the well, if this is not cased. Even when cased, there 
 mjay be leaks in the casing which nearly always develop after 
 some years of service. However, concerning samples from defi- 
 nite strata, the following general facts may be stated. 
 
 Deep wells which are nearest the outcrop of the water-bearing 
 rocks are less mineralized than wells far away. A general sur- 
 vey of our water horizons shows that the Trinity sand furnishes 
 our most desirable deep waters over a large pa,rt of the eastern 
 area of the state. The waters obtained from sands in the Penn- 
 sylvanian are nearly always salty and frequently produce strong 
 brines. The sands of the middle Comanchean produce many of 
 our mineral waters. They are rich in magnesia and alkalies. 
 
Chemical Analyses of Texas Bocks and Minerals 12£ 
 
 Sonne quite pure water occurs in the Cambrian sandstone around 
 the Central Mineral Eegion. The waters furnished by the sands 
 and conglomerates of the Triassic formation on the east side oi 
 the Llano Estaeado are good potable waters. An unique class 
 of waters is found in springs issuing from the Permian forma- 
 tion on the east side of the Delaware Mountains and in the Rust- 
 ler Hills. These waters frequently contain sulphuric acid. 
 
 Further than this, it is not safe to venture any general state- 
 ments without a detailed consideration of the geological forma 
 tions and physical structure lof the layers in which a water is 
 found. Such discussions, to be worth anything, must necessarilj 
 be lengthy and detailed, and cannot be given here. They will b( 
 found in the following publications : 
 
 Bulletin No. 9 of the University of Texas Mineral Survey 
 "Reconnaissance in Trans-Pecos, Texas, north of the Texas anc 
 Pacific Railway," by George Burr Richardson. 
 
 Water Supply and Irrigation, Paper No. 191 of the U. S. Geo] 
 Survey: "The Geology and Water Resources of the Westeri 
 Portion of the Panhandle of Texas," by Charles N. Gould. 
 
 Water Supply, Paper 335, of the U. S. Geol. Survey: "Geol 
 ogy and Underground Waters of the Southeastern Part of thi 
 Texas Coastal Plain," by Aleyander Deussen. 
 
 Bulletin of the University of Texas No. 57 (1915), "Geolog: 
 and Underground Waters of the Northern Llano Estaeado," b: 
 Charles Lawrence Baker. 
 
 Manner of Reporting the Analytical Results. — Th 
 analytical results obtained in the determination of the solubl 
 salts in waters are reported first in "number of parts of solii 
 per million parts of water", and second in "relative number o 
 combining units", the latter being the number of gram-equiva 
 lents of each ion per 1000 liters, — as shown in the foUowin 
 example of a report of a water analysis : 
 
130 
 
 University of Texas Bulletin 
 
 
 
 
 
 Eelative Number of 
 
 
 Constituents 
 
 Parts 
 
 per million 
 
 Combining Units (Gram- 
 
 
 
 
 Equiv. 
 
 per 1000 Liters 
 
 Calcium ion 
 
 
 138 
 
 
 6.89 
 
 
 Magnesinm ion 
 
 
 29, 
 
 
 2.37 
 
 
 Sodium ion 
 
 
 69 
 12 
 
 
 2.99 
 
 12.25 
 
 Carbonate ion 
 
 0.40 
 
 
 Bicarbonate ion 
 
 
 290 
 
 
 4.76 
 
 
 Sulphate ion 
 
 
 198 
 
 
 4.12 
 
 
 Chloride ion 
 
 , 
 
 106 
 
 
 2.97 
 
 12.25 
 
 Since in the formation of any salt a given number of units 
 of any positive ion (or metal atom) combines with an equal 
 number of units of any negative ion (or acid radical), it is 
 evident that — 
 
 (a) the sum of the "relative number of combining units" of 
 all the positive ions should be equal to the corresponding sum of 
 the negative ions — and the third column of figures shows this 
 to be SO; 
 
 (b) the sum of the relative number of combining units of the 
 carbonate ion plus that of the bicarbonate ion is 5.16, — Whence 
 if these ions are removed in combination with calcium, then 
 5.16 
 
 of 138 = 103 parts per million is the total amount of cal- 
 
 6.89 
 
 cium which will be thus removed, and the total amount of salts 
 thus removed from the water is the sum of the weights of their 
 constituents, that is, 103+290+12=405 p.p.m.' 
 
 Similarly other quantity relations necessary for the interpre- 
 tation of a water analysis are readily obtained. 
 
 In this publication, the second numbers, which express the 
 relative numbers of combining units, have been enclosed in pa- 
 rentheses, and placed helow their corresponding first numbers. 
 The latter express parts pey million. 
 
 . Substances other than the ions of soluble salts are reported 
 directly as determined in the analysis. Thus the total solids. 
 
Chemical Analyses of Texas Bocks and Minerals 131 
 
 the volatile and organic matter and the suspended matter are 
 reported in just the amounts and forms in which they were 
 obtained from the water and weighed. With reference to the 
 suspended matter, it should be remarked that it includes only 
 that finely divided material which can not be separated from 
 the water by filtering, and which is usually spoken of as being 
 in colloidal solution : in other words, ordinary suspended matter 
 was either absent in these samples or it had been removed by 
 filtration and hence is not included under the column of sus- 
 pended matter here. The materials present in colloidal solution 
 are usually those listed in these analysis, — namely, silica, iron 
 oxide, and alumina. The elements silicon, iron, and aluminum 
 are scarcely ever present in such dilute solutions as these in 
 any other form than their oxides. Hence, they are reported 
 in this form. 
 
 The fundamental idea of the method used here for reporting 
 the analyses of waters' is to express, directly, the results ob- 
 tained by chemical analysis — that is, with as little arbitrary or 
 unnecessary re-calculating as possible — and yet to have them 
 intelligible at a glance. 
 
 In many analyses, sodium and potassium are reported to- 
 gether; in these cases the number of combining units could not 
 be calculated, and hence the numbers in parentheses are 
 omitted. 
 
 Eelation Between Salt Content and Quality. 
 
 Waters for Domestic Use. — Water for domestic use should 
 be colorless (free from sediment), odorless, and agreeable to 
 the taste (not salty, or sweetish). A water that meets these re- 
 quirements may usually be used for domestic purposes without 
 being examined for anything except its bacterial content. 
 
 Such water usually contains less than 2 parts per million of 
 iron, and less than 600 parts per million of total dissolved 
 solids. 
 
 Very small amounts of iron impart a decided taste to water: 
 — waters containing more than 8 parts per million of iron can- 
 not be used for domestic purposes until the iron has been re- 
 
132 University of Texas Bulletin 
 
 moved chemically. "Waters with high iron content are classed as 
 chalybeate waters. Much less than 8 parts per million of iron 
 will give a water a chalybeate taste, and produce rust spots on 
 fabrics. 
 
 When, as is mostly the case, waters contain -only ions of cal- 
 cium, magnesium, sodium, carbonate, sulphate, and chloride, 
 they may carry much more than 600 parts per million of dis- 
 solved salts and yet be usable for domestic purposes. However, 
 when they contain from 300 to 600 parts per million of chloride 
 ion, they taste slightly brackish or si^lty, with 800 to 900 parts 
 per million of chloride ion, waters are distinctly disagreeable to 
 the taste, and with more than 2000 parts per million of chloride 
 ion, they are undrinkable. Stock, however, are said to tolerate 
 slightly more than 2000 parts per million of chloride ion. 
 
 Large amounts of sulphate ion in a drinking water are more 
 objectionable than the sam!e amount of chloride ion: 2000 parts 
 per million of sulphate ion is laxative, and continual drinking 
 of it is disastrous. 
 
 Water for Steam Boiuers. — In steam boilers, the mineral 
 constituents may produce three different kinds of trouble — 
 corrosion, scale formation, and foaming. 
 
 Corrosion is due mostly to free acid — either present as such 
 or produced by the decomposition (hydrolysis) of iron or alum- 
 inum salts, and of magnesium chloride in waters free from car- 
 bonates. These ingredients in corrosive waters can usually be 
 "neutralized" or removed without much trouble or cost, — Whence 
 there is no excuse for using such waters raw in boilers. Any 
 chemist can, after examining the water, give proper directions 
 for removing this cause of corrosion. 
 
 Water high in sodium ion — e.g. 400 parts per million or more 
 — are also decidedly corrosive ; nothing can be done to lessen this 
 trouble except distilling it. 
 
 Scale formation in boilers takes place by the calcium ion 
 combining to the full extent with the carbonate, bicarbonate, and 
 sulphate ions, the separation of silica, alumina, and iron oxide 
 as such, the separation of magnesium as the oxide (or car- 
 
Chemical Analyses of Texas Bocks and Minerals 133 
 
 bonate), and the inclusion of suspended matter by all of these. 
 If these scale forming ingredients in a water amount to — 
 
 (Parts per million) 
 more than and less than then the water is classified as 
 
 90 good 
 
 90 200 fair 
 
 200 430 poor 
 
 430 680 bad 
 
 680 . . very bad 
 
 (Table by K. B. Dole, U. S. G. S. W. S. 335, page 104). 
 
 Waters containing from 90-200 parts per million of scale 
 forming ingredients can be profitably treated to remove the 
 scale former; those containing above 200 parts per million 
 should always be so treated. 
 
 An upper limit for this softening treatment is reached when 
 the resulting water contains 200 to 400 or more parts of sodium 
 (and potassium) ion per million parts of water, because such 
 water is liable to foam. However, the foaming tendency of 
 water can be lessened, or foaming entirely prevented, by fil- 
 tering the water and by keeping the boiler contents clean and 
 free from sediment. 
 
 Even, then, a water containing more than 400 p. p.m. of 
 sodium is objectionable because it produces corrosion. 
 
 Water for Irrigation. — Great concentrations of soluble salts 
 inhibit the growth of plants, and of sodium carbonate even 
 small amounts, are objectionable unless gypsum is used to react 
 with it. It is impossible to state even approximate limits for 
 the amounts of soluble salts allowable in irrigation waters, be- 
 cause many factors such as the character of the crop, the 
 character of the soil, the drainage, etc., enter into the deter- 
 mination of the amounts of salts allowable. The question can 
 be answered only by a' chemist who has an opportunity to study 
 the water, the soil, the subsoil, and the crops to be grown. 
 
 As a very rough approximation it may be said that waters 
 containing more than 350 p.p.m. of chloride ion are unfit for 
 irrigation. 
 
134 University of Texas Bulletin 
 
 I. WELL WATER. 
 
 Anal. No. 
 
 2154. Angelina County. Well water from 2% miles west of Piatt, 
 
 on land owned by A. P. Mimmey. 430 to 456 feet deep. 
 Wilcox formation. Sept. 1907 by B. L. Glasscock. U. S. G. 
 S. W. S. 335, p. 110. 
 
 2155. Same as No. 1, except that' the well is 1024 to 1070 feet deep. 
 
 2156. Austin County. Prom well at Kennedy, Texas. Sample from 
 
 Maulding Land Co., San Antonio. Analyzed by W. T. Read 
 Jan. 18, 1913. B. A. C827 
 
 2157. Bastrop County. Artesian water from depth of 220 feet 
 
 under 40 feet of coarse white sand. Sent by J. T. Crysup. 
 Bastrop, Texas. B. A. 2524. 
 
 2158. Baylor County. Well water. Roundhouse well at Seymour. 
 
 By W. M. Barr. U. S. G. S, W. S. 317, p. 60. Sampled 
 Nov. 1, 190 6. 
 
 2159. Bailor County. Gin well at Round Timber. 20 feet deep. 
 
 U. S. G. S. W. S. 317, p. 69. 
 
 2160. Baylor County. Well at Round Timber, 200 yards N. E. 
 
 of store. 40 feet deep. U. S. G. S. W. S. 317, p. 69. Sam- 
 pled, October 1906. 
 
 2161. Bell County. Artesian water. Trinity reservoir. Fort 
 
 Worth, Southward. Owner Professor C. L. Myerp. Re- 
 porter, Prof. C. L. Myers. These waters are from an upper 
 Trinity reservoir, or possibly from the Glen Rose reser- 
 voir. U. S. G. S. A. R. 21 part 7, p. 449. 
 
 2162. Bexar County. Terrell Well, San Jose, Texas. Analyzed 
 
 by W. T. Read, who collected sample. No data given. 
 B A. C828. 
 
 2163. Bexar County. Well at Guenther- Milling Co. San Antonio. 
 
 B. A. No. 2679. 
 
 2164. Bowie County. From a spring near Dalby Springs, Bowie 
 
 County, Wilcox formation. Date of analysis not given. 
 W. S. Paper 276, p. 75. 
 
 2165. Bowie County. Well near New Boston, furnishing city water 
 
 supply. Nacatoch formation. Analyzed Sept. 10, 1907 by 
 R. B. Dole and M. G. Roberts. W. S. Paper 276, p. 75. 
 
 2166. Bowie County. Same date as No. 2165. 
 
 2167. Brazoria County. Well water from Terry's Landing, from 
 
 land of Guy M. Bryan, Lissie formation. Depth 1,020 
 (?) feet. U. S. G. S. W. S. 335, p. 110. 
 
 2168. Brazoria County. Well water from Velasco. From E. D. 
 
 Dechester. Lissie formation, 1,100 feet in depth. Analyzed 
 by H. H. H., U. S. G. S. W. S. 335, p. 110. 
 
 2169. Brazoria County. From 3% miles S. E. of Velasco, from 
 
 land belonging to. C. H. Alexander. Depth unknown 
 
Chemical Analyses of Texas Eocks and Minerals 135 
 
 Analyzed by Dr. Edgar Everhardt, of the University of 
 Texas. U. S. G. S. W. S. 335, p. 110. 
 
 2170. Burleson County. Prom village of Clay. Depth 647 to 687 
 
 feet. Yegua formation. U. S. G. S. W. S. 335, p. 110. 
 
 2171. Burleson County. Water from deep well owned by Mit. 
 
 Parker, 3 miles S. E. of Tunis, Burleson County. Depth 
 760 feet. "W. S. Paper 190, p. 60. 
 
 2172. Cass County. From springs owned by H. R. Hughes, Hughes 
 
 Springs, Texas. Wilcox formation. Collected Sept. 1907. 
 Analyzed by B. L. Glasscock. U. S. G. S. W. S. 276, 
 p. 75. 
 
 2173. Cass County. From well owned by W. H. Coon, of Linden. 
 
 Wilcox formation. Sample collected Nov. 1907. Analyzed 
 b^ J. R. Bailey and A. McAfee. TJ. S. G. S. W. S. 276, 
 p. 75. 
 
 2174. Chambers County. Water from Smith Spring No. 2. N. W. 
 
 part of High Island. Analyzed by James Kennedy. U. S. 
 G. S. W. S. 335, p. 110. 
 
 2175. Chambers County. Water from Smith Spring No. 3, N. W. 
 
 part of Chambers County. Analyzed by H. H. H. U. S. 
 G. S. W. S. 335, p. 110. 
 
 2176. Cherokee County. From IVi miles N. E. of Dialville. Sam- 
 
 ple from Castalian Springs. Analyzed Feb. 1908, by J. R. 
 Bailey and A. M. McAfee. U. S. G. S. W. S. 335, 
 p. 110. 
 
 2177. Colemain County. From well of F. D. Snodgrass, Coleman. 
 
 Sept. 1915. Analyzed by J. E. S. B. A. No. 2767. 
 
 2178. Cook County. Artesian water. Gainesville. Lower Ti-inity 
 
 Reservoir. Owner, Gainsville Oil Milling & Gin Co. Re- 
 porter, officers of company. 
 
 2179. Cook County. Artesian water. Gainesville. Lower Trin- 
 
 ity Reservoir. North of Trinity. Owner, Gainesville Ice 
 Co. Reporter President of Co. U. S. G. S. A. R. 21, part 
 VII., p. 449. 
 
 2180. Culberson County. Water from well on Sayle's ranch in 
 
 Gypsum Belt. Analyzed by S. H. W. T. M. S. B. IX., 
 p. 86. 
 
 2181. Culberson County. Water from Screwbean Spring on eastern- 
 
 slope of Rustler Hills. Analyzed by S. H. W. T. M. S. B. 
 IX., p. 82. 
 
 2182. Dallas County. Artesian water from Dallas Court House. 
 
 Reported b,y L. M. Conner. Main Woodbine Reservoir. 
 U. S. G. S. A. R. 21, part VII., p. 449. 
 
 2183. Dallas County. Well water from the Dallas News. Well 
 
 at Dallas. Analyzed by W, T. R., Feb. 1, 1917. B. A. 
 No. C1030. 
 
136 University of Texas Bulletin 
 
 2184. Dallas County. Same as No. 2183, except that it was 
 
 analyzed in 1915 by W. T. R. B. A. No. C1031. 
 
 2185. Beaf Smith County. From well 3 miles S. E. of Hereford. 
 
 Analyzed by J. E. S. U. T. B. 57, p. 90. 
 
 2186. Denton County. Denton, Texas. Woodbine and Paluxpr 
 
 Reservoirs. Analyzed by T. G. S. U. S. G. S. A. R. 21, 
 part VII., p. 449. 
 
 2187. Dickens County. Prom deep well, on Spur Ranch. Sub- 
 
 mitted by C. A. Jones, Spur, Texas. Depth of well 2200 
 feet. 
 
 2188. Dimmltt County. Mineral water from dug well % mile 
 
 south of courthouse, at Carrizo Springs. Depth 60 feet. 
 V. S. G. S. W. S. 66, p. 63. 
 
 2189. Eastland County. From about 800 feet of the Scarbrough 
 
 Well, 6 miles north of Cisco. Analyzed b^y J. E. S. B. A. 
 2747. 
 
 2190. Ellis County. Artesian water. Waxahachie. Main Wood- 
 ^ bine Reservoir. Reporter, E. A. DuBose, Mayor of Waxa- 
 hachie. By Texas Agricultural and Mechanical College. 
 U. S. G. S. A. R. 21 part VII., p. 449. 
 
 2191. Ellis County. Artesian water from Millford. Woodbine and 
 
 Paluxy Surveys. U. S. G. S. A. R. 21, part VII., p. 449. 
 
 2192. Ellis County. Artesian water from Millford. Woodbine and 
 
 Paluxy Surveys. U. S. G. S. A. R. 21, part VII., p. 449. 
 
 2193. El Paso Count|y. From wells of El Paso, Rock Island Ry. 
 
 wells. Analyses furnished by C. B. Eddy. T. M. S. B. 
 IX., p. 98. At Fort Bliss Station. Depth 260 feet. 
 
 2194. El Paso County. Same as before, except depth of well is 
 
 420 feet. 
 
 2195. El Paso County. Well water from the Rhoden W^ell in East 
 
 El Paso. Analysis furnished by S. M. Skeats. T. M. S. B. 
 IX., p. 108. 
 
 2196. El Paso County. From White's Well in the Rio Grande 
 
 Valley, about 10 miles north of El Paso. Analysis fur- 
 nished by S. M. Skeats. T. M. S. B. IX., p. 107. 
 
 2197. El Paso County. From Army Post Well, near Fort Bliss. 
 
 Analysis furnished the Tex. Min. Survey by the El Paso 
 Chamber of Commerce. Depth 312 feet. T. M. S. B. IX, 
 p. 97. 
 
 2198. El Paso County. Well water from El Paso Ice and Refrig- 
 
 erating Co. Inferior shallow water at 199 feet. Separated 
 from good water by clay stratum 9 feet. Analysis 
 furnished by S. M. Skeats. T. M. S. B. IX., p. 107. 
 
 2199. El f aso County. Water from El Paso Hot Wells. Analysis 
 
 furnished by S. M. Skeats. Depth 1,000 feet. Tempera- 
 ture 110° F. U. T. B. 365, p. 116. 
 
Chemical Analyses of Texas Bocks and Minerals 137 
 
 2200. El Paso County. Well, water from 70-foot well on ranch of 
 
 A. Courchesne near Ysleta about 12 miles S. E. of El Paso. 
 U. S. G. S. W. S. 141, p. 75. 
 
 2201. El Paso County. Prom Chemical Springs (Stinking Seep) 
 
 in N. E. part of El Paso County, 3 miles N. W. of Cook- 
 sey's ranch. Section 44, Blk. 60. Sampled by W. B. P. 
 Analyzed 1904 by S. H. W. B. A. C967. 
 
 2202. El Paso County. Hydrant water from El Paso. Analyzed for 
 
 Chamber of Commerce, El Paso. T. M. S. B. IX., p. 108. 
 
 2203. El Paso County. Prom lime quarry El Paso. Depth 30 
 
 feet. W. S. Paper, 141, pp. 76-77. ' 
 
 2204. El Paso County. Prom new 400-foot well of El Paso Ice 
 
 and Refrigerator Company, El Paso, Texas. W. S. Paper 
 141, pp. 76-77. 
 
 2205. El Paso County. Near El Paso. Analysis made on total 
 
 solids. W. S. Paper 141, pp. 74-75. 
 
 2206. El Paso County. Same as above. 
 
 2207. El Paso County. Van Horn Quadrangle. Water from Rail- 
 
 road wells at Van Horn. Collected Nov. 10, 1910. Analyzed 
 by Dole, Palmer and Collins. U. S. G. S. Polio, No. 194. 
 220 8. El Paso County. Water from the well at Figure Two Ranch 
 Headciuarters. Collected Nov. 1, 1908. Depth of well 30 
 feet. U. S. G. S. Folio, No. 19 4. 
 
 2209. El Paso County. J. S. Borcher's Well, 8 miles below El 
 
 Paso. Analyzed by Arthur Goss. U. S. G. S. 
 
 2210. El Paso County. Same as above. 
 
 2211. El Paso County. Army Post Well, Port Bliss. U. S. Folio, 
 
 No. 166, p. 11. 
 
 2212. El Paso County. El Paso and N. W. Ry. Well, Fort Bliss. 
 
 U. S. Polio^ No. 166, p. 11. 
 
 2213. El Paso Hydrant (Old System). U. S. Folio, No. 166, p. 11. 
 
 2214. El Paso County. E. J. Hadlock Valley wells, 3 miles east 
 
 of El Paso. U. S. Folio, No. 166, p. 11. 
 
 2215. El Paso County. J. S. Porcher Valley wells, 8 miles east 
 
 of El Paso. U. S. Folio, No. 166, p.' 11. 
 
 2216. El Paso County. Same as above. 
 
 2217. El Paso County. A. Courchesne Valley wells, Ysleta. U. S. 
 
 Folio No. 166, p. 11. 
 
 2218. Erath County. Sutherland Mineral water. Owned by Duf- 
 
 fan Mineral Wells Developing Co., DufEan. Analyzed by 
 G. S. Fraps, of A. & M. College, TJ. T. B. 365, p. 118. 
 
 2219. Erath County. Jones Gas Well, Stewart Pasture. Depth 
 
 1290 feet. Sent by W. K. Gordon, Thurber, Texas. 
 Analyzed by J. E. S. B. A. No. 2551. 
 
 2220. Palls County. Artesian Water from Marlin. Glen Rose 
 
138 University of Texas Bulletin 
 
 Reservoir. Analyzed by W. H. Allen. IT. S. G. A. R. 21, 
 part, VII., p. 449. 
 
 2221. Falls County. From Marlin Hot Wells. Depth of well 3,350 
 
 feet. Analyzed by E. Everhardt of University of Texas. U. 
 T. B. 365^ p. 119. 
 
 2222. Floyd County. Well near N. W. corner. Section 6, Blk. K, 
 
 Floyd County, near Hale County line. Submitted by F. H. 
 Hillebrand. Analyzed 1914 by J. E. S. B. A. No. 2121. 
 1223. Fort Bend County. Well water from land of Eliza Jones, 
 near town of Thompson. Lissie formation. Depth 406 
 feet. Analyzed by J. R. Bailey and A. M. McAfee. U. S. 
 G. S. W. S. 335, p. 110. 
 
 2224. Galveston County. Well water from Corner Post Office and 
 
 26th Sts. Owned by Brush Electric Light and Power Co., 
 Depth S13 feet. Lissie formation. Analyzed by C. P. Rus- 
 sell. U. S. G. S. W. S. 335, p. 110. 
 
 2225. Galveston County. Well water from Texas Ice and Cold 
 
 Storage Co., corner of 20th and Avenue A, Galveston. Lis- 
 sie formation. Depth 856 feet. Analyzed by S. P. Sharp- 
 less. U. S. G. S. W. S. 335', p, 110. 
 
 2226. Galveston County. Well water from the shops of the Santa 
 
 Fe R. R. Lissie formation. Depth 797 feet. Analyzed 
 by R. Voelker. U. S. G. S. W. S. 365, p. 110. 
 
 2227. Galveston County. Well water from well belonging to 
 
 National Cotton Oil Co., corner of 18th St., and Avenue A, 
 Galveston. U. S; G. S. W. S. 335, p. 110. Analyzed by 
 David Wesson. 
 
 2228. Galveston County. Well water from well of the bagging 
 
 factory, Corner 38th and Church Sts., Galveston. Lissie 
 formation. From the horizon that supplies most of the 
 wells at Galveston. Analyzed by Prof. Williams. U. S. G. 
 S. W. S. 335, p. 110. 
 
 2229. Galveston Country. Water from Well No. 1, of . the South 
 
 Galveston Land Co., ten miles S. W. of City of Galveston. 
 Lissie formation. Depth 810 ft. From horizon that sup- 
 plies wells of Galveston. Anal, by H. H. H. U. S. G. S. W. 
 S. 335, p. 110. 
 
 2230. Galveston County. Water from well of Galveston City Water 
 
 Works, at Alta Loma, Well No. 8. Analyzed 1899 by 
 Fraser and Co. Lissie formation. Depth 7 96 feet. U. S. 
 G. S. W. S. 335, p. 110. 
 
 2 231. Galveston County. Water from Galveston City Water Works. 
 Well No. 13, Alta Loma. Depth 740 to 860 feet. Lissie 
 formation. Analyzed 1899 by Fraser and Co. U. S. G. 
 S. W. S. 335, p. 110. 
 
 2232. Galveston County. Water from well of A. H. Tacquard, ot 
 
Chemical Analyses of Texas Rocks and Minerals 139 
 
 Hitchcock 1% miles west of Galveston. Depth 750 feet. 
 Lissie formation. Analyzed Feb. 1908, by J. R. Bailey 
 and A. M. McAfee. U. S. G. S. W. S. 335, p. 110. 
 
 2233. Galveston County. Water from well of G. G. and S. F. Ry., 
 
 Hitchcock. Lissie formation. Depth 711-726 feet. 
 Analyzed by W. H. Melville. U. S. G. S. W. S. 335, p. 110. 
 
 2234. Galveston County. Water from J. Tacquard, of Hitchcock, 
 
 1% miles N. W. of Galveston. Depth 710 feet. Lissie 
 formation. Analyzed by W. H. Melville. U. S. G. S. W. S. 
 335, p. 110. 
 
 2235. Galveston County. Water from well of R. T. Wheeler, 1^4 
 
 miles east of Hitchcock. Lissie formation. Depth 690 
 feet. Analyzed by W. D. Church. U. S. G. S. W. S. 335, 
 p. 110. 
 
 2236. Galveston County. Water from Nichols well, of Dickenson. 
 
 Lissie formation. Depth 600 feet. Analyzed by W. H. 
 Melville. U. S. G. S. W. S. 335, p. 110. 
 
 2237. Galveston County. Water from Fairwood. Lissie formation. 
 
 Depth 576 feet. Anal^yzed by J. E. Sieble. U. S. G. S. W. S. 
 335, p. 110. 
 
 2238. Galveston County. Sample from G. H. & H. Ry., at League 
 
 City. Lissie (?) formation. Depth 935-1,020 feet. 
 Analyzed by the St. Louis Sampling and Testing Works. 
 U. S. G. S. W. S. 335, p. 110. 
 22 39. Galveston County. Well water from Kohfeldt and Braun, 
 % miles N. E. of Lamarque. Lissie formation. Depth 
 82 7-843 feet. Analyzed by J. R. Bailey and A. M. McAfee, 
 April, 1908. U. S. G. S. W. S. 335, p. 110. 
 
 2240. Grimes County. Spring water from spring on branch of 
 
 Navasota river. Analyzed by T. G. S. On George Mason 
 headright, 16 miles north of Navasota. U. S. G. S. W. S. 
 335 p. 110. 
 
 2241. Grimes County. Spring water from spring near the one 
 
 mentioned in No. 2240. Analyzed 1889 by T. G. S. U. S, 
 G. S. W. S. 225 p. 110. 
 .2242. Grimes County. Water from shallow well on George Mason 
 headright, 16 miles north of Navasota. Analyzed 1889 by 
 T. G. S. Depth of well 10-12 feet. U. S; G. S. W. S. 
 335, p. 110. 
 
 2243. Grimes County. Same as No. 2240, except that analysis was 
 
 made by H. H. H. 
 
 2244. Grimes County. Same as No. 2240. Analysis made by T. 
 
 G. S. 1889. , 
 
 2245. Grimes County. Water from R. B. Templeman Waterworks, 
 
 of Navasota. Catahoula formation. Analyzed 190 8 by J. 
 R. Bailey and A. M. McAf(3e. U. S. G. S. W. S. 355, p. 110. 
 
140 University of Texas Bulletin 
 
 224 6. Grimes County. Water from well of R. B. Templeman, from 
 Isaac Jackson league west of Navasota. Catahoula ( ? ) 
 formation. Depth 520 feet. Analyzed Feb. 1908 by J. R. 
 Baile^y and A. M. McAfee. U. S. G. S. W. S. 335, p. 110. 
 
 2247. Grimes County. Artesian water from Navasota. Depth of 
 
 well 280 feet. U. S. G. S. W. S. 190, p. 42. 
 
 2248. Grayson County. Nos. 2248-2251, inclusive, are well water 
 
 from Tioga Sanitarium and Water Co., Tioga, Texas. U. T. 
 B. 365, p. 132. 
 22 52. Grayson County. Artesian water, Tioga, Texas, Upper Wood- 
 bine Reservoir. Owner, G. W. Rains. Reporter, H. C. 
 Sperry. Analyzed by H. H. H. U. S. G. S. A. R. 21, part 
 VII, p. 449. 
 
 2253. Grayson County. Artesian water. El View, Texas. Upper 
 
 Woodbine Reservoir. Reporter, H. C. Sperry. Analyzed 
 by H. H. H. U. S. G. S. A. R. 21, part VII., p. 449. 
 
 2254. Grayson County. Artesian water. Big Mineral Creek. Main 
 
 Woodbine Reservoir. Reporter, W. C. Eubank. Owner, 
 W. C. Eubank. Analyzed by L. M. Conner. U. S. G. S. A. R. 
 21, part VII., p. 449. 
 
 2255. Grimes County. Water from Navasota. Depth of well 220- 
 
 237 feet. Catahoula formation. U. S. G. S. W. S. 335, p. 
 110. 
 
 2256. Hale County. Corner Restriction and Archer Streets, Plain- 
 
 view. Miss Mayhew's well, near High School. Analyzed by 
 J. E. S. B. A. No. 1988. 
 
 2257. Hale Count,y. Prom B. H. L. King's well, corner of Third 
 
 and Jones street, southeast part of town, near north bank 
 of Blanco Creek, Plainview. Analyzed by J. E. S. B. A. 
 No. 1989. 
 
 2258. Hale County Courthouse well, center of Plainview. Analyzed 
 
 by J. B. S. B. A. No. 1990. 
 
 2259. Hale County. Bowlin well, corner Sterling and East Sixth 
 
 Street, Plainview, southeast part of town. Analyzed by J. 
 E. S. B. A. No. 1991. 
 
 2260. Hale County. Knight well. Third and Bast Streets, Plain- 
 
 view, northeast part of city. Analyzed by J. E. S. B. A. 
 No. 1992. 
 2 261. Hale County. Town well. Hale Center. Analyzed by J. E. 
 S. B. A. No. 1993. 
 
 2262. Hale County. Sanders well, one mile S^ W. of Hale Center. 
 
 Analyzed by J. E. S. B. A. No. 1994. 
 
 2263. Hale County. Moore well, near N. E. corner of Hale County. 
 
 Analyzed by J. E. S. B. A. No. 2000. 
 
 2264. Hale County. A. B. Rosser well^ Section 114, Blk. D. 2, 
 
 N. E. part of county. Analyzed h^ J. B. S. B. A. No. 2001. 
 
Chemical Analyses of Texas Bocks, and Minerals 141 
 
 2265. Hale County. Pearson well. No. 2. Submitted by Charles 
 
 L. Baker, Nov. 14, 1914. Analyzed by J. E. S. B. A. No. 
 2058. 
 
 2266. Hale County. Dan Gray windmill well. About % miles 
 
 north of S. W. corner. Section 4, Block JK-4 on east side 
 of Running Water Road, near its junction with the Olton 
 Road. Analyzed by J. E. S. B. A. No. 2059. 
 
 2267. Hale County. Tar Water well. Running Water Post Office, 
 
 at post oHice. Analyzed by J. E. S. B. A. No. 2060. 
 
 2268. Hale Count|y. H. W. Witte well, near N. W. corner Section 
 
 6, Blk. G, 3% miles of Running Water Postofflce. 
 Analyzed by J. E. S. B. A. No. 2061. 
 
 2269. Hale County. Olsen well, N. W. corner of Hale County. 75 
 
 feet to water. , Analyzed by J. E. S. B. A. No. 2062. 
 
 2270. Hale County. Malone City Water Works well, Plainview. 
 
 Analyzed by J. E. S. B. A. No. 20S3. 
 
 2271. Hale Count|y. Windmill well, north 55° E. of Plainview 
 
 Courthouse, Plainview. Analyzed by J. E. S. B. A. No. 
 2072. 
 3272. Hale County. E. Dowden well, N. E. quarter Section 54, 
 Blk. JK-2. Analyzed by J. E. S. B. A. No. 2073. 
 
 2273. Hale County. E. A. Cragen's well, 4% miles due north of 
 
 center of Hale Center. Analyzed by J. E. S. B. A. 
 No. 2074. 
 
 2274. Hale County. S. H. Howard well, near S. W. corner Sec- 
 
 tion 23, Blk JK-3. Analyzed by J. E. S. B. A. No. 2075. 
 J275. Hale County. Morgan windmill well, 200 yds. north of 
 
 irrigation well and ten miles west of Plainview. Analyzed 
 
 by J. E. S. B. A. No. 2076. 
 2278. Hale County. Dr. R. R. White's windmill well at the S. E. 
 
 of the two irrigation wells. Analyzed by J. E. S. B. A. 
 
 No. 2077. 
 
 2277. Hale County. H. H. O'Brien's well, one and one-half miles 
 
 west-northwest of Aiken and 200 yards south of Floydada 
 branch railroad, 100 yards N. W. of the new syndicate 
 well. Analyzed by J. E. S. B. A. No. 2078. 
 
 2278. Hale County. From well in S. W. corner. Section 10, Block 
 
 A-4. Analyzed by J. B. S. B. A. No. 2122. 
 
 2279. Hale County. Prom F. H. Springer well, N. E. quarter sec- 
 
 tion 11, Blk. 2-A, 55.5 feet to water. Analyzed by J. E. S. 
 B. A. No. 2123. ' 
 
 2280. Hale County. Peter well, 10 miles N. W. of Hale Center. 
 
 Analyzed by J. E. S. B. A. No. 2124. 
 
 2281. Hale County. , J. B. Ross well, N. E. corner of Section 20, 
 
 BH:. A-4. 53.4 feet to water. Analyzed by J. B. S. tB. A. 
 No. 2125. 
 
142 University of Texas Bulletin 
 
 2282. Hale County. From town well, Petersburg. Analyzed by 
 
 J. E. S. B. A. No. 2126. 
 
 2283. Hale Counter. From. Benson well, 9 miles S. W. of Hale 
 
 Center. Analyzed by J. E. S. B. A. No. 2117. 
 
 2284. Hale County. Texas Land and Development Co., Lake Plain- 
 
 view well. U. T. B. 57, p. 90. 
 
 2285. Hale County. Texas Land and Development Co., Well No. 2. 
 
 U. T. B. 57, p. 90. 
 
 2286. Hale County. Texas Land and Development Co., Well No. 
 
 11. U. T. B. 57, p. 90. 
 
 2287. Hale County. Texas Land and Development Co., well No. 
 
 43, (Pioneer Farm). U. T. B. 57, p. 90. 
 
 2288. Hale County. Texas Land and Development Co., windmill 
 
 well No. 11, File 72. V. T. B. 57, p. 90. 
 
 2289. Hale County. Water from city well, Plainview. tJ. T. B. 
 
 57, p. 90. 
 
 2290. Hale County. Water from Col. Smprthe irrigation well, Plain- 
 
 view. U. T. B. 57, p. 90. 
 
 2291. Hall County. Artesian water, Hubbard City, Glen Rose 
 
 Reservoir. U. S. G. S. A. R. 21, part VIL, p. 449. 
 
 2292. Hardeman County. From well of Bert Abbott, Collected 
 
 Sept. 12, 1907; Depth 65 feet. Upper Permian. U. S. G. 
 S. W. S. 317, p. 62. Analyzed by B. L. Glasscock. 
 
 2293. Hardeman County. From well at Ice Plant, Quanah, Texas. 
 
 Upper Permian. Collected Sept. 24, 1907. Analyzed by 
 B. L. Glasscock. U- S. G. S.^W. S. 317, p. 62. 
 
 2294. . Hardin County. From well of* 6. C. & S. F. R^., at Silsbee. 
 
 Lissie formation. Depth 392-466 feet. U. S. G. S. W. S. 
 335, p. 110. 
 
 2295. Hardin County. From well of Olive-Sternenberg Lumber 
 
 Co., Olive, Texas. Lissie formation. Depth 286-339 feet. 
 Analyzed by J. R. B. and A. M. McA. 1908. U. S. G. S. 
 W. S. 335, p. 110. 
 
 2296. Hardin County. From well of G. C. & S. F. Ry. Co., at 
 
 Votaw. Lissie formation. Depth 265-320 feet. U. S. G. 
 S. W. S. 335, p. 110. 
 
 2297. Hardin County. From well of G. C. & S. F. Ry. Co., at Dies, 
 
 Lissie formation. Depth 75-268 feet. U. S. G. S. W. S. 
 335, p. 110. 
 
 2298. Harris County. Houston. Water from A. V. Kellogg (H. & 
 
 T. C. Ry.) Analyzed by S. H. W., 1903. B. A. C965. 
 
 2299. Harris County. Brine from Humble oil field, near Hous- 
 
 ton. Analyzed 1910 by Charles Palmer. U. S. G. S. W. S. 
 364, p. 16. 
 
 2300. Harrison County. Water from Hynsba Springs, 6 miles west 
 
 of Marshall. Mount Selman formation. Analyzed Feb. 
 
Chemical Analyses of Texas Bocks and Minerals 143 
 
 1908, by J. R. B. and A. M. McA. U. S. G. S. W. S. 335, 
 p. 110. 
 
 2301. Harrison County. From water works, 3 miles N. E. of Mar- 
 
 shall. Wilcox formation. Analyzed Sept. 1907 by B. L. G. 
 Depth 60 feet. TJ. S. G. S. W. S. 335, p. 110. 
 
 2302. Harrison County. Same as above but taken at depth 253 
 
 feet. 
 
 2303. Harrison County. Water from Roeborough Springs No. 1, 
 
 9 miles south of Marshall. Analyzed by J. H. H. U. S. 
 G. S. W. S. 335, p. 110. 
 
 2304. Harris County. Prom G. H. & H. Ry., Well No. 1, at Genoa. 
 
 Lissie formation. Depth 661-683 feet. Analyzed by St. 
 Louis Sampling and Testing Works. U. S. G. S. W. S. 335, 
 p. 110. 
 
 2305. Harris County. From well of G. H. & H. R^., at Genoa^ 
 
 Well No. 2, about 9 feet north of Well No. 1. Lissie for- 
 mation. U. S. G. S. W. S. 335, p. 110. 
 
 2306. Harris County. From well of Cummings Export Co., Hous- 
 
 ton, 4 miles east of Postoffice. Depth 500 (?) feet. 
 Analyzed 1908 by J. R. B. and A. M. McA. U. S. G. S. W. S. 
 335, p. 110. 
 
 2307. Haskell County. Well of J. W. Westbrook, Haskell, Texas. 
 
 Depth 10 feet. Seymour formation. Analyzed by B. L. G. 
 U. S. G. S. W. S. 317, p. 65. 
 
 2308. Haskell Country. Courthouse well at Haskell, Texas. Depth 
 
 20 feet. Seymour formation. Analyzed by B. L. G. U. S. 
 G. S. W. S. 317, p. 65. 
 
 2309. Haskell County. Well, "Harder water," at Rule, Texas. 
 
 Depth 75 feet. Upper Permian. Analyzed by B. L. G. U. 
 S. G. S. W. S. 317, p. 65. 
 
 2310. Haskell County. Well, "Soft water, at Rule, Texas. 
 
 Depth 40-50 feet. Seymour formation. Analyzed by B. L. 
 G. U. S. G. S. W. S. 317, p. 65. 
 
 2311. Haskell County. Poster and Jones' hotel well, at Rule, 
 
 Texas. Depth 60 feet. Seymour formation. Analyzed by 
 B. L. G. U. S. G. S. W. S 317, p. 65. 
 
 2312. Hays County. Water from Peter Dressen, Kyle, Texas. 
 
 Depth 500 (?) feet. 4 miles east of Kyle, on pasture of 
 Peter Dressen. T. M. S. A. No. 1456. 
 
 2313. Hidalgo County. Artesian water from white sulphur well. 
 
 Lasater Ranch. Analyzed by H. W. Harper, and B. L. 
 Glasscock, April, 1903. U. S. G. S. W. S. 190, p. 8. 
 
 2314. Hill County. Artesian water from Hillsboro. Main Wood- 
 . bine Reservoir. (This water may come from lower 
 
 reservoirs.) U. S. 6. S. A. R. 21, part VII., p. 449. 
 
 2315. Hill County. Mineral well water from Hubbard; Depth 
 
144 University of Texas Bulletin 
 
 3,300 feet. Temperature of water 137° P., and flow 200,- 
 000 gallons per 24 hours. Analysis furnislied by Hot Wells 
 Sanitarium. U. T. B. 365, p. 145. 
 
 2316. Hill County. City water from Hlllsboro. Sent by Dr. B. 
 
 Vaughn, City Health OflBcer, March 15, 1912. Analyzed 
 J. R. B. B. A. C938. 
 
 2317. Hockley County. Sample "A" from flowing well, about 1,000 
 
 feet deep, Littlefield lands. Sent by A. P. Duggan. 
 Analyzed by J. E. S. B. A. No. 2413. 
 
 2318. Hockley County. Sample "B" from flowing well about 78 
 
 feet deep, Littlefield lands. Sent by A. P. Duggan. Analyzed 
 by J. B. S. B. A. No. 2414. 
 
 2319. Jack County. From well of J. R. Bdmondson at Jeanette, 
 
 Texas. Analyzed by B. L. G. Sample collected Sept. 24, 
 1907. IJ. S. G. S. W. S. Paper 317, p. 86. 
 
 2320. Jack County. From well of the Postmaster at Finis; Texas. 
 
 Analyzed by B. L. G. Sample collected Sept. 24, 1907. 
 U. S. G. S. W. S. Paper 317, p. 86. 
 
 2321. Jack County. Vineyard mineral water, at Vineyard, Texas. 
 
 Analyzed by B. L. G. U. S. G. S. W. S. Paper 317, p. 86. 
 
 2322. Jack County. Helm's well, 12 miles east of Jackboro. Vine- 
 
 yard, Texas. Analyzed by B. L. G. U. S. G. S. W. S. 
 Paper, 317, p. 86. 
 
 2323. Jack County. Well of W. L. Vesner, at Vineyard, Texas. 
 
 Analyzed by B. L. G. U. S. G. S. W. S. Paper, 317, p. 86. 
 
 2324. Jack County. Well of W. F. Worden, 1 mile west of Court- 
 
 house, Jacksboro, Texas. Analyzed by B. L. G. U. S. G. 
 S. W. S. Paper, 317, p. 86. 
 
 2325. Jack County. Well of H. Hensley, 1% miles west of Court- 
 
 house, Jacksboro, Texas. Analyzed by B. L. G. U. S. G. 
 S. W. S. Paper 317, p. 86. 
 232 6. Jack County. Well at Phipps place, 2 miles N. B. of Court- 
 house, Jacksboro, Texas. Analyzed by B. L. G. U. S. G. 
 S. W. S. Paper, 317, p. 86. 
 
 2327. Jack County. Hensley and Johnson's farm well at Hess, 
 
 Texas. Analyzed by B. L. G. U. S. G. S. W. S. Paper, 
 317, p. 86. 
 
 2328. Jack County. Well at Hannible Pass place, Hess, Texas. 
 
 Analyzed by B. L. G. U. S. G. S. W. S. Paper, 317, p. 86. 
 
 2329. Jasper County. Artesian water from deep well at Kirby- 
 
 ville, U. S. G. S. W. S. Paper, 190, p. 50. 
 
 2330. Jasper County. Well water from well of J. A. Bohler, 2% 
 
 miles N. E. of Horger. Catahoula formation. Depth 182- 
 660 feet. Analyzed 1908 by J. R. B. and A. M. McA. 
 U. S. G. S. W. S. 335, p. 110. 
 
 2331. Jasper County. Water from well of Alexander-Gilmer Lum- 
 
Chemical Analyses of Texas Bocks and Minerals 145 
 
 ber Co., at Remlig, Mt. Cook, Mt. Selman and Wilcox 
 formation. Deptli 1,037-1,320 feet. U. S. G. S. W. S. 
 335, p. 110. 
 
 2332. Jasper County. Water from KirbyvlUe. Deptli 82-212 feet. 
 
 Llssie formation. V. S. G. S. W. S. 335, p. 110. 
 
 2333. Jasper County. Water from Kirbyville Oil Company, Kirby- 
 
 vlUe, Catahoula formation. Depth 1,312-1,346 feet. 
 Anal^yzed by B. L. G. U. S. G. S. W. S. 335, p. 110. 
 
 2334. Jasper County. Spring water from Doom Spring at Salt 
 
 Works, 4 miles east of Rockland. Analyzed Sept. 1907 by 
 B. L. G. U. S. G. S. W. S. 335, p. 110. 
 
 2335. Jasper County. Water from well of Kountze Bros. Two 
 
 miles north of Rockland, Yegua formation. Analyzed 
 Sept. 1907 by B. L. G. Depth 1,229-1,241 feet. U. S. G. 
 S. W. S. 335, p. 110. 
 
 2336. Jefferson County. Water from Spindletop Power Co., Spin- 
 
 dletop. Lissie formation. Depth 360 feet. Analyzed 19 07 
 by J. R. B. and A. M. McA. U. S. G. S. W. S. 335, p. 110. 
 
 2337. Jefferson County. Water from Beaumont Countr^y Club, 3^4 
 
 miles north of Beaumont. Lissie formation. Depth 360- 
 650 feet. Analyzed 1907 by J. R. B. and A. M. McA. U. S. 
 G. S. W. S. 335, p. 110. 
 
 2338. Karnes County. Well at Kennedy, from Moulding Land Co., 
 
 San Antonio, Texas. B. A. C971. 
 
 2339. Lamar County. Prom salt well on Main street, of Blossom, 
 
 Texas. Eagle Ford formation. Analyzed by R. B. Dole 
 and M. G. Roberts April 7, 1908. U. S. G. S. W. S. 276, 
 p. 75. 
 
 2340. Lamar County. Prom well of Dr. A. J. Beauchamp, Blos- 
 
 som, Texas. Blossom formation. Analyzed b^y R. B. D. 
 and M. G. R. Feb. 9, 1907. U. S. G. S. W. S. 276, p. 75. 
 2 341. Lamar County. Prom well on Main Street, Blojsom, Texas. 
 Eagle Ford formation. Analyzed by R. B. D. and M. G. R., 
 Feb. 1907. U. S. G. S. W. S. 27g", p. 75. 
 
 2342. Lamar County. From Black Well, Blossom, Texas. Eagle 
 
 Ford formation. Analyzed by R. B. D. and M. G. R., 
 Feb. 14, 1907. U. S. G. S. W. S. 276, p. 75. 
 
 2343. Lamar County. Prom well of J. C. Thompson, Blossom, 
 
 Texas. Blossom formation. Analyzed by R. B. D. and 
 M. G. R. Feb. 11, 1907. U. S. G. S. W. S. 276, p. 75. 
 
 2344. Lamar County. From well of Ed Arnold, Blossom, Texas. 
 
 Blossom formation. Analyzed by R. B. D. and M. G. R. 
 April 7, 1908. U. S. G. S. W. S. 276, p. 75. 
 
 2345. Lamar County. From well of W. J. Wallace, Blossom, 
 
 Texas. Blossom formation. Analyzed by R. B. D. and M. 
 G. R. Feb. 9, 1907. U. S. G. S. W. S. 276, p. 75. 
 
146 University of Texas Bulletin 
 
 234 6. Lamar County. From well of T. F. Hefner, Blossom, Texas. 
 Blossom formation. Analyzed by R. B. D. and M. G. R. 
 April 7, 1908. U. S. G. S. W. S. 276, p. 75. 
 
 2347. Lamar County. From well of Cotton yard, Blossom, Texas. 
 
 Blossom formation. Analyzed by R. B. D. and M. G. R. 
 April 7, 1908. U. S. G. S. W. S. 276, p. 75. 
 
 2348. Lamar County. From well owned by J. W. Williams, Blos- 
 
 som, Texas. Blossom formation. Analyzed by R. B. D. and 
 M. G. R. April 7, 1908. U. S. G. S. W. S. 276, p. 75. 
 
 2349. Lamar County. From well of A. P. Ball, Blossom, Texas. 
 
 Blossom formation. Analyzed by R. B. D. and M. G. R. 
 April 7, 1908. U. S. G. S. W. S. 276, p. 75. 
 
 2350. Lamar County. From wells of Frisco Plant, of Paris. Blos- 
 
 som formation. Nov. 29, 1902. Kennicut Water Softener 
 Co., U. S. G. S. W. S. 276, p. 75. 
 
 2351. Lamar Count|y. Mineral water from the Blossom Mineral 
 
 Water Co., Blossom, Texas, Marked "Government Analy- 
 sis." U. T. B. 365, p. 160. 
 
 2352. Lampasas County. Artesian water from Lampasas, Texas. 
 
 Underlying Paleozoic Rocks. Analyzed by Prof. E. Waller. 
 U. S. G. S. A. R. 21, part VII., p. 449. (This water also 
 contains .18 6 grains Lithium bicarbonate not included in 
 total.) 
 
 2353. Lavaca County. Hallettsville. Water from St. Mary's Min- 
 
 eral Well. U. T. B. 365, p. 163. 
 
 2354. Lampasas County. Water from Lampasas, Texas. Sent by 
 
 W. B. Abney. Mixture of water from 550, 1,110 and 1,- 
 560 feet. Analyzed by S. H. W. 1903. B. A. C954. 
 
 2355. La Salle County. From wall 750 feet deep, B miles west of 
 
 Fowlerton, on the Dull Ranch in the N. E. part of La Salle 
 County. Analyzed by S. H. W. B. A. No. 47. 
 
 2356. Liberty County. From well of G. C. & S. F. Ry. at cross- 
 
 ing on Trinity River. Lissie formation. Depth 240-290 
 feet. U. S. G^ S. W. S. 335, p. 110. 
 
 2357. Liberty County. From Well of G. C. & S. F. Ry., at Cleve- 
 
 land. Lissie formation (?). Depth 288-267 feet. Ana- 
 lyzed by W. A. Powers. U. S. G. S. W. S. 335, p. 110. , 
 
 2358. Liberty County. From well of Miller and Vidor Lumber 
 
 Co. at Vi mile S. W. from town of Milvid. Dewitt forma- 
 tion. Depth 532-585 feet. Analyzed by G. H. Seynes. 
 U. S. G. S. W. S. 335, p. 110. 
 
 2359. Lubbock County. From well on Lubbock State Farm. 
 
 Analyzed by State Chemist. U. T. B. 57, p. 90. 
 
 2360. Lynn County. Herring well, Tahoka. Analyzed by J. B. S. 
 
 Analysis No. 2127. U. T. B. 57, p. 90. 
 
Chemical Analyses of Texas Bocks and Minerals 147 
 
 2361. LaSalle County. Well 400 yards south of Artesia. Depth 
 
 160 feet. U. S. G. S. W. S. 375. Owner T. J. Alderman. 
 
 2362. LaSalle County. Well 200 yards west of Artesian. Depth 
 
 200 feet. Owner J. W. Mclnnes. U. S. G. S. W. S. 375. 
 
 2363. LaSalle County. Well V2 mile south of Artesia. Depth not 
 
 given. Owner, Pruitt Commission Co. U. S^ G. S. W. S. 
 375. 
 
 2364. LaSalle County. Well 150 yards N. E. of Artesia. Depth 
 
 120 feet. Owner, M. H. Baine. IT. S. G. S. W. S. 375. 
 
 2365. La Salle County. Well 1% miles east of Artesia. Depth 
 
 475 feet. Owner, G. B. Wiltse. U. S. G. S. W. S. 375. 
 
 2366. LaSalle County. Well 3 miles S. W. of Artesia. Depth 200 
 
 feet. Owner, W. E. Alderman. IT. S. G. S. W. S. 375. 
 
 2367. LaSalle County. Well % mile south of Artesia. Depth 250 
 
 feet. Owner, J. M. Ramsey. U. S. G. S. W. S. 375. 
 
 2368. LaSalle County. Well 300 yards S. W. of Artesia. Depth 
 
 165 feet. Owner, A. G. Salmon. U. S. G. S. W. S. 375. 
 
 2369. LaSalle Count,y. Well 900 feet S. E. of depot, Artesia. 
 
 Depth 194 feet. Owner, C. C. Hurley. U. S. G. S. W. S. 
 375. , 
 
 2370. LaSalle County. Well Vz mile N. W. of Artesia. Depth 330 
 
 feet. Owner LaSalle Land and Pig Co. U. S. G. S. W. S. 
 375. 
 
 2371. LaSalle County. Well % mile north of Artesia. Depth 200 
 
 feet. Owner, E. N. Johnston. U. S. G. S. W. S. 375. 
 
 2372. LaSalle County. Well Vz mile S. E. of Artesia. Depth 248 
 
 feet. Owner, R. L. Hendrickson. U. S. G. S. W. S. 375. 
 
 2373. LaSalle County. Well 1% miles south of Artesia. Depth 
 
 170 feet. Owner, R. C. Maxwell. U. S. G. S. W. S. 375. 
 
 2374. LaSalle County. Well l>/4 miles south of Artesia. Depth 
 
 193 feet. Owner, John Robuck. U. S. G. S. W. S. 375. 
 
 2375. LaSalle County. Well IVt miles S. E. of Artesia. Depth 
 
 450 feet. Owner, J. M. Ramsey. U. S. G. S. W. S. 375. 
 
 2376. LaSalle County. Well 3 miles east of Artesia. Depth 300 
 
 feet. Owner, J. M. Ramsey. U. S. G. S. W. S. 375. 
 
 2377. LaSalle Count|y. Well 7 miles N. W. of Artesia. Depth 150 
 
 feet. Owner, John Hicks. U. S. G. S. W. S. 375. 
 
 2378. LaSalle County. Well 100 yards west of Artesia. Depth 
 
 487 feet. Owner, J. W. Mclnnes: U. S. G. S. W. S. 375. 
 
 2379. LaSalle County. Well 500 yards south of Artesia. Depth 
 
 500 feet. Owner, T. J. Alderman. U. S. G. S. W. S. 
 375. 
 
 2380. LaSalle County. Well 100 feet north of Artesia. Depth 400 
 
 feet. Owner, Asherton & Gulf Ry. U. S. G. S. W. S. 375. 
 
 2381. LaSalle County. Well 5 miles west of Artesia. Depth 130 
 
 feet. Owner J. L. Jones. U. S. G. S. W. S. 375. 
 
148 University of Texas Bulletin 
 
 2382. LaSalle County. Well 1 mile N. W. of Artesia. Depth 1,560 
 
 feet (?). Owner, C. H. Bever. U. S. G. S. W. S. 375. 
 
 2383. LaSalle County. 600 feet N. W. of Atlee. Owner, T. A. 
 
 Coleman. U. S. G. S. W. S.. 375. 
 
 2384. LaSalle County. Courthouse well, Cotulla. Depth 165 feet. 
 
 U. S. G. S. W. S. 375. 
 
 2385. LaSalle County. Well 400 yards N. W. of Cotulla. Depth 
 
 100 feet. Owner, J. T. Carr. U. S. G. S. W. S. 37 5. 
 
 2386. LaSalle County. Well % mile N. E. of Cotulla. Depth 105 
 
 feet. Owner W. N. Guinn. U. S. G. S. W. S. 375. 
 
 2387. LaSalle County. Well 1 mile north of Cotulla. Depth 127 
 
 feet. Owner, L. W. Gantis. U. S. G. S. W. S. 375. 
 
 2388. LaSalle County. Well 4 miles N. E. of Cotulla. Depth 100 
 
 feet. Owner, Roy Lewis. U. S. G. S. W. S. 375. 
 
 2389. LaSalle County. Well 12% miles N. E. of Cotulla. Depth 
 
 290 feet. Owner, E. C. Hatton. U. S. G. S. W. S. 375. 
 
 2390. LaSalle County. Well Vz mile N. W. of Bolton. U. S. G. S. 
 
 W. S. 375. 
 
 2391. LaSalle County. Well 1% miles S. W. of Cotulla. Depth 
 
 330 feet. Owner Joseph Cotulla. U. S. G. S. W. S. 375. 
 
 2392. LaSalle County. Well 300 feet south of depot, Cotulla. Depth 
 
 1,008 feet. Owner, L & G. N. R^. U. S. G. S. W, S. 375. 
 
 2393. LaSalle County. Same as above. 
 
 2394. LaSalle County. Well 8 miles N. W. of Cotulla. Depth 760 
 
 feet. Owner, not given. U. S. G. S. W. S. 375. 
 
 2395. LaSalle County. Well 8% miles east of Cotulla. Depth 
 
 2,000 feet. Owner, O. S. Dewees. U. S. G. S. W. S. 375. 
 
 2396. LaSalle County. Well 10 miles east N. E. of Cotulla, on 
 
 Dewees Ranch. Depth 1,850 feet. Owner, O. S. Dewees. 
 U. S. G. S. W. S. 375. 
 
 2397. LaSalle County. Well 12 miles N. E. of Cotulla. Depth 
 
 1,800 feet. Owner, O. S. Dewees. U. S. G. S. W. S. 375. 
 
 2398. LaSalle County. Well 1 mile west of Cotulla. Depth 2,424 
 
 feet. Owner, Joseph Cotulla. U. S. G. S. W. S. 375. 
 
 2399. LaSalle County. Well same as above. 
 
 2400. LaSalle County. Well 150 feet S. W. of Encinal. Depth 
 
 350 feet Owner, T. A. Coleman. U. S. G. S. W. S. 375. 
 
 2401. LaSalle County. Well 300 feet N. E. of Encinal. Depth 800 
 
 feet. Owner, I. & G. N. R^. U. S. G. S. W. S. 375. 
 
 2402. LaSalle County. Well 300 feet S. W. of Encinal. Depth 146 
 
 feet. Owner, G. N. Berry. U. S. G. S. W. S. 375. 
 
 2403. La Salle County. Well 600 feet south of Encinal. Depth 
 
 350 feet. Owner, J. W. McMullen. U. S. G. S. W. S. 375. 
 
 2404. LaSalle County. Well % mile N. B. of Encinal, on Section 
 
 498. Depth 300 feet. Owner, G. A. Welhausen. U. S. G. 
 S. W. S. 375. 
 
Chemical Analyses of Texas Rocks and Minerals 149 
 
 5. LaSalle County. Well % mile north of Encinal. Depth 375 
 
 feet. Owner G. W. Welhausen. U. S. G. S. W. S. 375. 
 
 6. LaSalle County. Well 1 % miles west of Encinal. Depth 300 
 
 feet. Owner, G. W. Welhausen. V. S. G. S. W. S. 375. 
 
 7. LaSalle County. Well 3 miles west of Encinal. Depth 275 
 
 feet. Owner, G. W. Welhausen. U. S. G. S. W. S. 375. 
 
 8. LaSalle County. Well 3 miles N. E. of EncinaL Depth 175 
 
 feet. Owner, A. R. Munn. V. S. G. S. W. S. 375. 
 
 9. LaSalle County. Well 3 miles N. W. of Encinal, in Section 
 
 694. Depth 258 feet. Owner, G. A. Welhausen. U. S. 
 G. S. W. S. 375. 
 
 0. LaSalle County. Well 5 miles N. W. of Encinal, in Section 
 
 650. Depth 275 feet. Owner, G. A. Welhausen. U. S. G. 
 S. W. S. 375. 
 
 1. LaSalle Country. Well 7 miles N. E. of Encinal. Depth 506 
 
 feet. Owner S. S. Charles. V. S. G. S. W. S. 375. 
 
 2. LaSalle County. Well 7 miles N. W. of Encinal. Depth 2 84 
 
 feet. Owner, Ted Watkins. U. S. G. S. W. S. 375. 
 
 3. LaSalle County. Well 5 % miles S. W. of Fowlerton. Owner, 
 
 A. L. Warner. U. S. G. S. W. S. 375. 
 
 4. La Salle County. Well 5 % miles N. W. of Fowlerton. Depth 
 
 340 feet. U. S. G. S. W. S. 375. Tennessee Garden Well. 
 
 5. LaSalle County. Well 7 % miles S. W. of Fowlerton. Depth 
 
 300 or 400 feet. Owner, Gus Jones. U. S. G. S. W. S. 375. 
 
 6. LaSalle County. Well 6% miles west of Fowlerton. Depth 
 
 1,000 feet. Owned by Fowler Bros. Land Co. U. S. G. 
 S. W. S. 375. 
 
 7. LaSalle County. Well 7 1-6 miles N. W. of Fowlerton. Depth 
 
 1,400 feet. Same owner as above. U .S. G. S. W. S. 375. 
 
 8. LaSalle County. Well same as above. 
 
 9. LaSalle County. Well 6% miles west of Fowlerton. Depth 
 
 1,000 feet. Owner, Fowler Bros. Land Co. U. S. G. S. 
 W. S. 375. 
 
 10. LaSalle County. Well 6% miles west of Fowlerton. Depth 
 
 1,000 feet. Owner, Fowler Bros. Land Co. U. S. G. S. 
 W. S. 375. 
 
 11. LaSalle County. Well 71/2 mile N. W. of Fowlerton. Depth 
 
 1,000 feet. Owner, Gus Jones. U. S. G. S. W. S. 375. 
 
 12. LaSalle County. Well 13 miles N. W. of Fowlerton. Depth 
 
 7 97 feet. Owner, Mrs. Helen Irwin. U. S. G. S. W. S. 375. 
 !3. LaSalle County. Well % mile west of Fowlerton. Depth 
 
 1,857 fe«t. Owner Fowler Bros. Land Co. U. S. G. S. W. S. 
 
 375. 
 14. LaSalle County. Well % mile west of Fowlerton. Hotel 
 
 Well No. 3. Owner, Fowler Bros. Land Co. U. S. G. S. 
 
 W. S. 375. 
 
150 University of Texas Bulletin 
 
 ( 
 
 2425. LaSalle County. Well same as above. 
 
 2426. LaSalle County. Well same as above. 
 
 2427. LaSalle County. Well % mile west of Fowlerton. Depth 
 
 2,056 feet. Owner, Fowler Bros. Land Co. U. S. G. S. 
 W. S. 375. 
 
 2428. LaSalle Country. Well IVz miles west N. W. of Fowlerton. 
 
 Depth 1,9 57 feet. Owner, Fowler Bros. Land Co. U. S. 
 G. S. W. S. 375. 
 
 2429. LaSalle County. Well 1% miles west N. W. of Fowlerton. 
 
 Depth 1,957 feet. Owner, Fowler Bros. Land Co. U. S. G. 
 S. W. S. 375. 
 
 2430. LaSalle County. 2430-2436 inclusive are the same as 2429. 
 
 2437. LaSalle County. Well iVz miles N. W. of Fowlerton. Depth 
 
 1,792 feet. Owner, Fowler Brois. Land Co. U. S. G. S. 
 W. S. 375. 
 
 2438. LaSalle County. Well 3 miles S. W. of Fowlerton. Depth 
 
 1,850 feet. Owner, B. C. Richardson. U. S. G. S. W. S. 375. 
 2 439. LaSalle County. Well same as above. 
 
 2440. LaSalle County. Well % mile east of Gardendale. Depth 
 
 300 feet. Owner F. R. Zeigler. U. S. G. S. W. S. 375. 
 
 2441. LaSalle County. Well 1 mile east of Gardendale, in Section 
 
 81. Depth 300 feet. Owner, Jack Goodman. U. S. G. S. 
 W. S. 375. 
 
 2442. LaSalle County. Well % miles S. B. of Gardendale. Depth 
 
 200 feet. Owner, J. R. Burnett. U. S. G. S. W. S. 375. 
 1443. LaSalle County. Well same as above. 
 2444. LaSalle County. Well 1 mile east of Gardendale. Depth 
 
 295 feet. Owner, W. T. Arnison. U. S. G. S. W. S. 375. 
 8,445. LaSalle County. Well 1 mile east of Gardendale. Depth 
 
 372 feet. Owner, J. W. Cain. U. S. G. S. W. S. 375. 
 
 2446. LaSalle County. Well 2 miles N. E. of Gardendale. Depth 
 
 308 feet. Owner, Fritz Schneebli. U. S. G. S. W. S. 375. 
 
 2447. LaSalle County. Well on public square, Gardendale. Depth 
 
 2,360 feet. Owner Gardendale Colony. U. S. G. S. W. S. 
 375. 
 2 448. LaSalle County. Well 1 mile east of Millett. Depth 1,465 
 (?) feet. Owner, W. C. Atkinson. U. S. G. S. W. S. 37 5. 
 
 2449. LaSalle County. Well 3 miles west of Woodward. Depth 
 
 182 feet. Owner, A. Y. Armstrong. U. S. G. S. W. S. 375. 
 
 2450. LaSalle County. Well 3 Va miles S. W. of Woodward. Depth 
 
 760 feet. Owner, B. J. Ownby. U. S. G. S. W. S. 375. 
 
 2451. LaSalle County. Well same as above. 
 
 2452. LaSalle County. Well 1 % miles S. W. of Woodward. Depth 
 
 1,720 feet. Owner, Creamer and Ireland. U. S. G. S. 
 W. S. 375. 
 2 453. LaSalle Count|y. Well same as above. 
 
Chemical Analyses of Texas Rocks and Minerals 151 
 
 2454. LaSalle County. Well 1,587 feet deep. Owner, Woodward 
 
 Vichy Co., U. S. G. S. W. S. 375. 
 
 2455. LaSalle County. Well same as above. 
 
 2455a. Leon County. Well 230 feet deep. Water rises within 
 '50 ft. from the surface and does not lower' by pumping. 
 
 Sent by Powell Drug Co., Marquez, in 1917. Anal, by T. W. 
 
 R. B. A. C559. 
 2843a. Martin County. Well 30 feet deep, flow inexhaustible. 
 
 Owned by J. R. Vane.9, Stanton. Analyzed 1918 by T. 
 
 W. R., B. A., C-608. 
 
 2456. McMuUen County. Well 3 miles N. E. of Crowther. Depth 
 
 100 feet. Owner, Boston-TexE^s Corporation. U. S. G. 
 S. W. S. 375. 
 
 2457. McMullen County. Well 1 mile S. W. of Crowther. Depth 
 
 75 feet. Owner, Boston-Texas Corporation. U. S. G. S. 
 W. S. 375. 
 
 2458. McMullen County. Well 2 miles S. E. of Crowther. Owner, 
 
 Boston-Texas Corporation. IT. S. G. S. W. S. 37 5. 
 
 2459. McMullen County. Well 2 miles south of Crowther. Owner, 
 
 Boston-Texas Corporation. U. S. G. S. W. S. 37 5. 
 
 2460. McMullen County. Well % mile east Tilden. Depth 31 feet. 
 
 Owner, W. H. Martin. U. S. G. S. W. S. 375. 
 24 61. McMullen County. Well 10 miles east of Tilden. Depth 58 
 feet. Owner, C. E. Byrne. U. S. G. S. W. S. 375. 
 
 2462. McMullen County. Well 7 miles south of Tilden. Depth 54 
 
 feet. Owner, A. W. Lowe. U. S. G. S. W S. 375. 
 
 2463. McMullen County. Well 9 miles S. W. of Tilden. Depth 34 
 
 feet. Owner, Hugh Pitzpatrick. U. S. G. S. W. S. 375. 
 
 2464. McMullen County. Well 12 miles east of Tilden. U. S. G. 
 
 S. W. S. 375. 
 
 2 465. McMullen County. Well 8 miles N. E. of Tilden. Depth 
 
 741 feet. Owner, C. R. Byrne. U. S. G. S. W. S. 375. 
 
 2466. McMullen County. Well 7 miles S. W. of Tilden. Owner,, 
 
 A. W. Lowe. U. S. G. S. W. S. 375. 
 
 2467. McMullen County. Well on Tilden public square. Depth 
 
 920 feet. U. S. G. S. W, S.' 375. 
 
 2468. McMullen County. Well 4% miles east of Tilden. Depth 
 
 2,800 feet. Owner, Two Rivers Rice Co. U. S. G. S. W. S_ 
 375. 
 
 2469. McMullen County. Well 11 miles south of Tilden. Depth 
 
 72 feet. Owner, John Fitzpatrick. U. S. G. S. W. S. 37 5. 
 
 2470. McMullen County. Well at Zella. Depth 2,105 feet. Owner, 
 
 Humphries. U. S. G. S. W. S. 375. 
 
 2471. Marion County. Well of J. M. DeWare, % mile north of 
 
 Jefferson. Wilcox formation. Depth 811 feet. Analyzed 
 1907 by G. L. B. U. S. 6. S-. W. S. 335, p. 110. 
 
152 University of Texas Bulletin 
 
 2472. McLennan County. Artesian water from Valley Mills. Lower 
 
 Trinity Reservoir, north of Trinity. Owner, Overshine. 
 Chemist, H. H. H. Reporter, R. P. Head. 
 
 2473. McLennan County. Artesian water from Waco. Trinity 
 
 Reservoirs, Ft. Worth, southward. Owner, Wells of Bell 
 Waterworks. Analyzed by U. S. G. S. 
 
 2474. McLennan County. Artesian water from Bosque Co., near 
 
 Waco. Owner, W. L. Prather. Reporter, J. K. Prather. 
 U. S. G. S. A. R. 21, part VIL, p. 449. 
 
 2475. McLennan County. Artesian water from Waco. Trinity 
 
 Reservoir, north of Trinity. Owner, Mr. Moore. U. S. 6. 
 S. A. R. 21, part, VII., p. 449. 
 
 2476. McLennan County. Artesian water from McGregor. Trinity 
 
 Reservoir Ft. Worth, northward. Owner, McGregor Water 
 Co. Reporter, President of Company. U. S. G. S. A. R. 
 21, part VII, p. 449. 
 
 2477. Mitchell County. Water from Mrs. Nancy Winston, Colo- 
 
 rado, Texas. Jan. 1917. Analyzed hyi W. T. R. B. A. 
 No. C909. 
 
 2478. Montague County. From well of W. T. Small, near Stone- 
 
 berg, Texas. Carboniferous formation. Analyzed by Wal- 
 ter Van Winkle. U. S. G. S, W. S. 317, pp. 41-44. 
 
 247 9. Montague County. From well of C. M. Chas-e, near Stone- 
 
 berg, Texas, May 1907. Analyzed by Walter Van Winkle. 
 Carboniferous formation. U. S. G. S. W. S. 317, pp. 41-44. 
 
 248 0. Montague County. From new City Well, Bowie, Texas. 
 
 Analyzed by Van Winkle, March 1907. Carboniferous 
 area. U. S. G. S. W. S. 317, pp. 41-44. 
 
 2481. Montague County. From Courthouse well, Montague, Texas. 
 
 Analyzed by W. M. Barr, Dec. 1906. Depth 60 feet. Car- 
 boniferous formation. U. S. G. S. W. S. 317, pp. 41-44. 
 
 2482. Montague County. From Parsonage well, Montague, Texas. 
 
 Analyzed by W. M. Barr, Dec. 1906. Depth 60 feet. About 
 600 feet south of Courthouse well. U. S. G. S. W. S. 317, 
 pp. 41-44. 
 
 2483. Montague County. Wagonhouse well, Montague, Texas. 
 
 Depth 40 feet. About 500 feet west of Courthouse well. 
 Analyzed by W. M. Barr, Dec. 19 06. Cretaceous forma- 
 tion. U. S. G. S. W. S. 317, pp. 41-44. 
 
 2484. Montag\ie County. From G. S. & S. F. Ry. well, at Bob- 
 
 bin, Dewitt formation. Depth 114-134 feet. U. S. G. S. 
 W. S. 335, p. 110. 
 
 2485. Montgomery County. From G. C. & S. F. Ry. well at 
 
 Conroe. Dewitt formation. Depth 577-642 feet. U. S. G. 
 S. W. S. 335, p. 110. 
 
 2486. Morris County. Well near Daingerfleld. Owner, Jos. Brad- 
 
Chemical Analyses of Texas Bocks and Minerals 153 
 
 field. Wilcox formation. Analyzed Sept. 1907 by B. L. G. 
 U. S. G. S. W. S. 276, p. 75. 
 
 2487. Nacogdoches County. Spring water from Stoker Mineral 
 
 Springs, B. Chandler Survey, near Stoker. Mt. Selman 
 formation'. Analyzed by Monroe, Hall and Hopkins. U. S. 
 G. S. W. S. 335, p. 110. 
 
 2488. Nacogdoches County. Water from "White Spring" at Gar- 
 
 rison. Wilcox formation. Analyzed Sept. 1907 by B. L. G. 
 U. S. G. S. W. S. 335, p. 110. 
 
 2489. 2489-2490. Nacogdoches County. Well of Whiteman-Decker 
 
 Lumber Co., Caro. Wilcox formation. Analyzed Sept. 
 1907 by B. L. G. Well No. 2489 is 300 feet deep. No. 
 2490 comes from a spring at this place. U. S. G. S. W. S. 
 335, p. 110. 
 
 2491. Nacogdoches County. From well of Nacogdoches Ice and 
 
 Cold Storage Co., at Nacogdoches. Wilcox formation. 
 Danth 340-500 feet. Analyzed by J. R. B. and A. M. McA., 
 1907. U. S. G. S. W. S. 335, p. 110. 
 
 2492. Nacogdoches County. Water from waterworks spring at 
 
 ISfacogdoches. Analyzed 1907 by B. L. G. U. S. G. S. W. S. 
 335, p. 110. 
 
 2493. Nacogdoches County. Spring water from- Shawnee Mineral 
 
 Spring on Samuel H. Hamil headright, near Angelina River, 
 south portion. Analyzed Sept. 1907 by B. L. G. U. S. 
 G. S. W. S. 335, p. 110. 
 
 2494. Navarro County. Artesian water from Corsicana, Texas. 
 
 Upper Woodbine Reservoir. • Analyzed by H. H. H. U. S. 
 G. S. A. R. 21, part VII., p. 449. 
 
 2495. Nueces County. Balli well, Seeligson Ranch. Analyzed 1903 
 
 by Dr. H. W. Harper and Barney Brooks. U. S. G. S. W: S. 
 190, p. 13. 
 
 2496. Nueces County, Santa Clara Well, on King's Ranch. Analyzed 
 
 19 03 by Dr. H. W. Harper and E. Anderson. U. S. G. S. 
 W. S. 190., p. 12. 
 
 2497. Orange County. From Parker farm, 8 miles north of Beau- 
 
 mont. Lissie formation (?) Depth 740 ft. (?). Analyzed 
 by H. H. H. U. S. G. S. W. S. 335, p. 110. 
 249 8. Palo Pinto County. Austin Well, Mineral Wells. Analyzed 
 by W. T. Read, 1913. B. A. C919. 
 
 2499. Palo Pinto County. Gibson Well, Mineral Wells. Analyzed by 
 
 W. T. Read, Jan. 25, 1913. B. A. C916. 
 
 2500. Palo Pinto County. Indian Well, Mineral Wells. Water 
 
 fresh from well. Analyzed by W. T. Read, Sept. 1913. 
 B. A. C914. 
 
 2501. Palo Pinto County. Ross tract, about % mile due east of 
 
154 University of Texas Bulletin 
 
 Strawn. Depth 850 feet. Analyzed by J. E. S. B. A. 
 No. 2446. 
 
 2502. Palo Pinto County. Crazy Well, No. 2, Mineral Wells. 
 
 Analyzed by W. T. Read, June 16, 1913. B. A. C91S. 
 
 2503. Palo Pinto County. Pinto Well, Mineral Wells. Analprzed 
 
 by W. T. R. May 21, 1915. B. A. C917. 
 
 2504. Palo Pinto County. O. K. or Sleepy water from Lamar 
 
 Well, Mineral Wells. Analyzed by P. S. Tilson. U. T. B. 
 365, p. 192. 
 
 2505. Palo Pinto County. From Lamar Well furnished by Com- 
 
 pany. Analyzed by P. B. Porter. U. T. B. 3 65, p. 19 2. 
 
 2506. Palo Pinto County. From Gibson Well Water Co., Mineral 
 
 Wells. Analyzed by J. R. B. U. T. B. 365, p. 193. 
 
 2507. Palo Pinto. B. B. Water, Mineral Wells. Analyzed by W. 
 
 T. R. U. T. B. 365, p. 193. 
 
 2508. Palo Pinto County. Mineral Water from Gibson Well, Min- 
 
 eral Wells. Analyzed by B. T. Dumble. U.* T. B. 365, 
 p. 193. 
 
 2509. Palo Pinto County. Water from Mineral Wells. Analysis 
 
 furnished by Company. U. T. B. 365, p. 195. 
 
 2510. Palo Pinto County. Same as above. 
 
 2511. Palo Pinto County. Lamar White Sulphur Water. Analyzed 
 
 by T. S. Tilson. U. T. B. 365, p. 194. 
 
 2512. Palo Pinto County. Mineral water from Star Wells, Min- 
 
 eral Wells. Analyzed by A. Merrill of St. Louis. U. T. B. 
 365, p. 195. 
 
 2513. Palo Pinto County. Sent by Mr. Milton P'3lt, of the Gibson 
 
 Well Water Co., Mineral Wells, Texas, Oct. 1912. Analyzed 
 by W. T. R. B. A. C932. 
 
 2514. Palo Pinto County. Gibson Well Water Co. Analyzed 1912, 
 
 by J. r; B. B. a. C933. 
 
 2515. Palo Pinto County. Gibson Well Water Co. Sent by Milton 
 
 Pelt. Analyzed 1912 by J. R. B. B. A. C951. 
 
 2516. Palo Pinto County.- From, Carlsbad Water Co. Well No 1, 
 
 Mineral Wells, Texas. Analyzed by W. T. R. B. A. C910. 
 
 2517. Palo Pinto County. From Carlsbad Water Co. Well No. 2, 
 
 Mineral Wells, Texas. Analyzed by W. T. R. 1912. B. 
 A. C911. 
 
 2518. Palo Pinto County. From Carlsbad Water Co. Well No. 3. 
 
 Mineral Wells, Texas. Analyzed by W. T. R., 1912. B. 
 A. C912. 
 
 2519. Palo Pinto County. From Carlsbad Water Co. Well No. 4. 
 
 Mineral Wells, Texas. Analyzed by W. T. R., 1912. B. 
 A. C913. 
 252 0. Palo Pinto County. Artesian Water from Palo Pinto. Under- 
 
Chemical Analyses of Texas Rocks and Minerals 155 
 
 l|ymg Paleozoic Rocks. U. S. G. S. A. R. 21, part VII., 
 p. 449. 
 
 2521. Palo Pinto County. 2521-2524, Inclusive, are from Crazy 
 Well, Mineral Wells. Analyzed by W. T. R. U. T. B. 365, 
 p. 195. 
 
 2525. Palo Pinto County. 2525-2526, inclusive, American Vichy 
 Water, Mineral Wells. Analysis furnished by Company. 
 U. T, B. 365, p. 194. 
 
 2525a. Pecos County. Well 20 miles west of Sheffield. Depth 1600 
 ft. Flow 100,000 gallons per da^y. Anal. 1918 by J. E. S., 
 B. A. C624. 
 
 2527. Red River County. From S-eep cistern. Owned by B. F. Ma- 
 son, Clarksvllle. Annona formation. Analyzed March 5, 
 1905 by'H. S. Spaulding. U. S. G. S. W. S. 276, p. 75. 
 
 252 8. Red River County. From well at Clarksville. Depth 600 
 feet. Blossom formation. Analyzed March 5, 1907, by 
 H. S. S. U. S. G. S. W. S. 276, p. 75. 
 
 2529. Reeves County. From Rustler Spring Well. Depth 2,045 
 
 feet. Toyah, Texas. B. A. No. 27 86. Analyzed by J. B. S. 
 
 2530. Robertson County. From Overall Mifieral Well No. 1, at 
 
 Franklin. Analyzed by Dr. Edgar Everhardt. U. S. G. S. 
 W. S. 335, p. 110. 
 
 2531. Robertson County. From Overall Mineral Well No. 2, at 
 
 Franklin. Analyzed by Dr. Edgar Everhardt. U. S. G. S. 
 W. S. 335, p. 110. 
 
 2532. Robertson County. From Wootan Mineral Well, No. 1, at 
 
 Wootan Wells. Wilcox formation. Depth 80-84 feet. 
 Analyzed h^ W. M. Mew. U. S. G. S. W. S. 365, p. 110. 
 
 2533. Robertson County. Same as above, except Well No. 2. 
 
 2534. RoDertson County. Same as above, except Well No. 3. 
 
 2535. Robertson County. Same as above, except Well No. 4. 
 
 2536. Sabine County. From G. C. & S. F. Ry. Well, at Bronson. 
 
 Wilcox formation. U. S. G. S. W. S. 335, p. 110. 
 
 2537. Shelby County. From G. C. & S. F. Ry. Well, at Center. 
 
 Wilcox formation. Depth 564-614 feet. U. S. G. S. W. S. 
 335, p. 110. 
 
 2538. Smith County. Riviere Mineral Water from T^yler. Analyzed 
 
 by Dr. J. W. Mallet, of University of Va. U. T. B. 365, 
 p. 219. 
 
 2539. Starr County. Artesian water from Mesquite Well, Lasater 
 
 Ranch. Analyzed by Dr. H. W. Harper and C. Hartman, 
 April 1903. U. S. G. S. W. S. Paper^ 190, p. 9. 
 2 540. Tarrant County, Artesian water, Ft. Worth. Trinity 
 Reservoirs, Ft. Worth, Southward. Owner Chicago and 
 Ft. Worth Packing Co. Reported by Company. U. S. G. 
 S. A. R. 21, part VII., 449. 
 
156 University of Texas Bulletin 
 
 2541. Titus Count|y. Mineral water from Red Mineral Spring No. 
 
 1, at Mount Pleasant. Analyzed by H. H. H., of A. & M. 
 College. U. T. B. 365, p. 225. 
 
 2542. Titus County. Same as above, except that sample came 
 
 from Red Mineral Spring, No. 2, at Mount Pleasant. 
 25 43. Tom Green County. From Concho Land Co., of San Angelo. 
 Analyzed by W. T. Garbade of the Medical Department of 
 the University of Texas. TJ. T. B. 365, p. 227. 
 
 2544. Tom Green County. Mineral water from Morgan Mineral 
 
 Well Co., of Christoval. Analyzed by T. H. Needham. 
 U. T. B. 365, p. 227. 
 
 2545. Tom Green County. Water from Concho Land Co., Carls- 
 
 tad. Analyzed by W. T- Garbade, of the Medical Depart- 
 ment of the University of Texas. U. T..B. 365, p. 227. 
 2545a. Tom Green County. Prom Jno. W. Harris' ranch, four miles 
 north, of San Angelo. Well 2449 ft. deep. Plow 6000 
 gallons per hour. Anal. 1918 by J. E. S. B. A., C732. 
 
 2546. Travis County. 2546-2547. From shallow well adjacent to 
 
 Colorado River. Depth 1,000 feet. Water level 9-12 feet. 
 
 Austin Str.eet Railway Company. Sept. 1915. Analyzed 
 
 by J. B. S. B. A. 2719 and 2720. 
 2548. Travis Country. From well at Capitol at Austin, 1,511 feet 
 
 deep. Plow 3,600 gallons per hour. U. T. B. 365, p. 231. 
 2 549. Travis County. Champion Mineral Well water, from near 
 
 junction of small branch of main channel of Bull Creek. 
 
 Analyzed by H. W. Harper. U. T. B. 365, p. 2 31. 
 
 2550. Travis County. Well of E. L. Steck, Austin. Depth 500 feet. 
 
 Analyzed by W. T. R. Sept. 13, 1913. B-. A. C921. 
 
 2551. Travis County. Collins Boring No. 1, near Pilot Knob, 
 
 Depth 770 feet. B. A. No. 2784. 
 
 2552. Travis County. Artesian w^ter, near San Jacinto and Fifth 
 
 Sts., Austin. Glen Reservoir. Analyzed by Dr. H. W. 
 Harper. U. S. G. S. A. R. 21, part VII., p. 449. 
 
 2553. Travis County. From Capitol grounds, marked water from 
 
 East Well.' Sent by Mr. C. E. Gilbert. Feb. 1905 Ana- 
 lyzed O. H. P. B. A. C920. 
 
 2554. Van Zandt County. Bittern from Grand Saline, Brine. 
 
 Analyzed 1913 by B. R. B. U. S. G. S. W. S. 364, p. 16. 
 
 25 55. Van Zandt County. Same as above. 
 
 2 556. Walker County. Water from well at Texas State Peniten- 
 tiary at Huntsville. Depth 339 to 384 feet. Catahoula 
 formation. Analyzed 1894 by H. H. H. U. S. G. S. W. S. 
 335, p. 110., 
 
 2557. Washington County. Prom well 1%- miles north of Bren- 
 ham. Depth 22 feet. Owner, T. S. Estes. Sent by H. A. 
 
Chemical Analyses of Texas Bocks and Minerals 157 
 
 Wunderlich of the Brenham Oil Co. Analyzed Feb. 24, 
 1916 by J. E. S. B. A. No. C77. 
 
 2558. Wichita County. Elevator well in alluvial deposits. Depth 
 
 20 feet. Analyzed by W. M. B. Oct. 1, 1906. U. S. G. 
 S. W. S. Paper, 317, p. 54. 
 
 2559. Wichita County. E. A. Chamberlain's well, Bluff Street, 
 
 Wichita Palls. In red shales and sand stone of Wichita 
 formation. Bepth 40 feet. Analyzed by Walter Van 
 Winkle, 1906. U. S. G. S. W. S. Paper, 317, p. 54. 
 
 2560. Wichita County. Well owned by F. D. Keena. Depth 220 
 
 feet. Analyzed by J. R. B. 1911. U. S. G. S. W. S. Paper 
 317, p. 54. 
 
 2561. Williamson County. Artesian water from Taylor, probably 
 
 from Fredericksburg Reservoir. Owner Artesian Well Co. 
 of Taylor. Analyzed by Dr. E. Everhardt. U. S. G. S. A. 
 R. 21, part VII., p. 449. 
 
 2562. Williamson County. Artesian water from Round Rock, 
 
 Texas. Glen Rose Reservoir. Sent by J. D. Robinson. 
 Analyzed, by Professor R. S. Hyer. U. S. G. S. A. R. 21, 
 part VII., p. 449. 
 
 2563. Williamson County. Artesian water from Georgetown. Glen 
 
 Rose Reservoir. Owner Mr. Page. Analyzed by Dr. E. 
 Everhardt. U. S., G. S. A. R. 21, part iVII., p. 449. 
 
 2564. Williamson County. Salt water from Taylor. Sent by 
 
 Messrs. Mantor and Briggs. Analyzed 1902 by O. H. P. 
 T. M. S. No. 1618. 
 
 2565. Wise County. Artesian water from Newark. Lower Trinity 
 
 Reservoir, north of the Trinity. Owner C. R. I. and P. Ry. 
 Analyzed by H. H. H. U. S. G. S. A. R. 21, part VII., 
 p. 449. 
 
 2566. Wood County. From well of Mineola Ice and Light Co. 
 
 Mineola. Wilcox formation. Analyzed 1908 by J. R. B. 
 and A. M. McA. U. S. G. S. W. S. 276, p. 75. 
 
 2567. Wood County. Same as above, except water from City 
 
 Water supply of Mineola. 
 
 2568. Wood Country. Well at Mineola. Depth 1,400 feet. U. of 
 
 T. Bulletin 365, p. 264. 
 
 2569. Young County. Well of Judge R. P. Arnold, Graham. Depth 
 
 110 feet. Analyzed 1906 by W. M. D. V. S. G. S. W. S. 
 317, p. 77. 
 
 2570. Young County. Barber shop well. Depth 61 feet. Analyzed 
 
 by H. S. S. Feb. 1907. U. S. G. W. S. 317, p. 77. 
 
 2572. Young County. Well on lot 10, Block 11, Graham. Analyzed 
 
 1906 by W. M. B. tr. S. G. W. S. 317, p. 77. 
 
 2573. Young County. Bandy's well, 3 miles S. E. of Spring 
 
158 University of Texas Bulletin 
 
 Creek. Depth 20 feet. Analyzed 1906 by W. M. B. U. S. 
 G. S. W. S. 317, p. 77,. 
 
 II. SURFACE WATER 
 
 2574. Culberson County. Spring water. Spring at head of Dela- 
 
 ware Creek, in the Guadalupe-Delaware Mountains, Trans- 
 Pecos, Texas. T. M. S. B. 9, p. 87. 
 
 2575. Culberson County. From head of draw east of Lindsey's 
 
 property. 
 2 576. Culberson County. Running water in creek, N. W. of Mav- 
 erick Spring. Collected by W. B. P. Analyzed 1916 by 
 J. E. S. B. A. No. 3138. 
 
 2577. Culberson County. Water from deep pool in draw near 
 
 road to W. B. Hick's house. Collected by W. B. P. Nov. 
 1916 by J. E. S., B. A. No. 3134. 
 
 2578. Culberson County. Water from seep below Maverick Spring. 
 
 Collected by W. B. P. 1916. Anal, by J. B. S. B. A. No. 
 3135. 
 
 2579. Culberson County. Water in N. W. part of Section 1, Blk. 
 
 111. Depth 23 feet. Collected by W. B. P. Anal. b|y 
 J. E. S. B. A. No. 3143. 
 
 2580. Delta County. Prom creek near town of Ben Franklin. 
 
 Owned by W. H. Coon. Analyzed 1902 by W. P. U. S. 
 G. S. W. S. 276, p. 75. 
 
 2581. Delta County. Prom creek, near Ben Franklin. Analyzed 
 
 Sept. 1902 by J. R. B. and A. M. McA. U. S. G. S. W. S. 
 276, p. 75 
 
 2582. El Paso County. From Crow Spring, Salt Basin, Trans-Pecos 
 
 Region. T. M. S. B., 9, p. 90. 
 
 2583. El Paso County. Mineral Spring water. El Paso, Texas, 
 
 collected by G. W. Huffmann. Analyzed by W. T. R, 1914. 
 B. A. C923. 
 
 2584. El Paso County. El Paso, Texas. U. S. G. S. W. S. 274, p. 
 
 140. 
 
 2585. El Paso County. Mineral Spring water from El Paso. 
 
 Analyzed 1914 by Harper and Reed. B. A. C922. 
 
 2586. El Paso County. From Salt Draw, west of House, Maverick 
 
 Springs, Section 13, Block 113. Analyzed 1904 by S. H. W. 
 B. A. C942. 
 
 2587. El Paso County. Salt Draw, north of House, Maverick 
 
 Springs, Block 113, Section 13, Analyzed 1904 by S. H. W. 
 B. A. C943. 
 
 2588. El Paso County. 2588-2835, inclusive, are from water of 
 
 Rio Grande River at Courchesne, near El Paso, Texas, 
 U. S. G. S. W. S. 274. 
 
Chemical Analyses of Texas Bocks and Minerals 159 
 
 2836. Grimes County. Water from Navasota Ice, Ligh-t & Power 
 Co., Navasota. Water was to be treated for making raw 
 water ice. Analyzed 1917 b^y T. W. R. B. A. C-781. 
 
 5837. Hardeman County. North Groesbeck Creek, near Quanah. 
 May, 1905. No other data given. 
 
 2838. Hardeman County. Same as above. 
 
 2839. Hardeman County. Colston's Pond, about 2 miles west of 
 
 Quanah. Analyzed 1915 by J. E. S. B. A. 2803. 
 
 2840. Hays County. Prom San Marcos River, at San Marcos. 
 
 Sent by Utilities Company's plant. Analyzed 1904 by 
 Geo. W."Lord Co. B. A. C930. 
 
 2841. Hays County. River water at San Marcos. From Utilities 
 
 Company's plant. Analyzed by Parson's Chemical Co., 
 1904. B. A. C931. 
 
 2842. Hays County. Spring water San Marcos. Sent by J. L. Fomby 
 
 Analyzed 1913 by W. T. R. B. A. C915. 
 
 2843. Lamar County. From City water supply, artificial lake, 
 
 Paris. Blossom formation. Analyzed 1902 by the Ken- 
 nicutt Water Softener Co. U. S. G. S. W. S. Paper 276, 
 p. 75. 
 
 2844. Maverick County. Prom Rio Grande Water and Power Co., 
 
 Eagle Pass. Analyzed 1904 by S. H. W. M. S. B. A. 
 C968. 
 
 2845. McLennan County. Water from Brazos River, near Waco. 
 
 2845-2850, inclusive, were analyzed by W. M. B., 2851 by 
 H. S. S., and 2852-2874, inclusive by R. B. B., Charles 
 Palmer and W. D. Collins. U. S. G. S. B. 2 36. 
 2 875. Palo Pinto County. Water from Frank Richards Mineral 
 Wells, Pipe Creek. Analyzed 1904 by O. H. P. B. A. 
 C944. 
 
 2876. Reeves County. Soft water from Tucher's well, 2% miles 
 
 N. W. of Riverton. Water collected in barrel sunk in 
 Four-mile Draw. Sent by Avery Turner. T. M. S. B. 
 IX, p. 81. 
 
 2877. Reeves Country. Prom Pecos River, about 10 miles below 
 
 Pecos. T. M. S. B. IX, p. 77 
 
 2878. Tarrant County. Water from Trinity River. Filter beds. 
 
 Ft. Worth. Supplied by T. U. Taylor. Analyzed by J. R. 
 B. March 11, 1912. B. A. C936. 
 3067. Terry County. Water from "Salt Lake." Analysis made by 
 Ft. Worth Laboratories, Pres. P. B. Porter, March 13, 
 1919. Entered in U. of .T. records under B. A. C974. 
 This analysis is primarily listed under "Potash" 
 
 2879. Travis County. Barton Springs. Sent byi P. H. Bruce. 
 
 Analyzed by S. H. W. Oct. 17, 1903. B. A. C935. 
 
 2880. Travis County. Sand filter bed. Colorado River water 
 
160 University of Texas Bulletin 
 
 used in boilers of the Austin St. Ry. Co. B. A. 2555. 
 
 Analyzed by J. E. S. 
 2 881. Travis County. Colorado River water, at Austin. U. S. G. 
 
 S. W. S. Paper 236, p. 116. 
 2 882. Travis County.. Filter bed. Colorado River water, taken 
 
 ifrom pipe in Laboratory of Bureau of Economic Geology 
 
 and Technology, University of Texas. Dec. 20, 1911. 
 
 Analyzed b^y S. H. W. B. A. 162. 
 2883. Travis County. 2883-'2918, inclusive, are water from Colo- 
 rado River at Austin. Analyzed by-W. H. Heileman. U. S. 
 
 G. S. W. S. 236. 
 2919. Webb County. 2919-2955, inclusive,, are water from Rio 
 
 Grande River at Laredo, Texas. Analyzed by W. H. H. U. 
 
 S. G. S. W. S. 236. 
 Z956. Webb County. From Rio Grande River, near Laredo, Texas. 
 
 U. S. G. S. W. S. Paper 236, p. 118. 
 
 2957. Wichita County. Cit|y water from artificial lake at Wichita 
 
 Palls. Analyzed 1906 by W. M. B. U. S. G. S. W. S. 
 Paper 317, p. 54. 
 1957a. Wichita County. From bed of Red River, near Burkburnet 
 oil field. Sent by C. B. Farquharson, Wichita Falls. Anal. 
 1917 by T. W. R. B. A., C556. 
 
 m. MISCELLANEOUS OR UNCaDASSIFIED WATER 
 
 * 
 
 2958. Anderson County. From J. L. Chambers, Palestine. Analyzed 
 
 1904byS. H. W. B. A. C956. 
 
 2959. Anderson County. Sarne as above. 
 
 2959a. Aransas County. From Heldenfels Bros., Rockport. 
 
 Analyzed 1917 by T. W. R. B. A. C5.55. 
 2959b. Bastrop County. From Clifton Rice, Bastrop. Water taken 
 
 from Copperas Creek. Anal. 1917 by T. W. R. B. A. 
 
 C-609. 
 
 2960. Bell County. From J. E. Elliott, Belton. Analyzed by S. 
 
 H. W. B. A. C955. 
 2962. Bowie County. From B. E. McCauley, Texarkana, Texas. 
 R. P. D. No. 3. Analyzed by S. H. W. B. A. C958. 
 
 2962. Bowie County. Same as above. B. A. C959. 
 
 2962a. Brazoria County. Water taken from a well on Stratton 
 Ridge, Velasco. Sent by Roxana Petroleum Co., Houston. 
 Analyzed 1917 by T. W. R. B. A. C-557. 
 
 2963. Caldwell County. From J. G. Burleson, Lockhart. Analyzed 
 
 1903byS. H. W. B. A. C957." 
 2963a. Cooke County. Sent by Gainesville Gravel Co., Gainesville. 
 Water taken from a gravel pit. Analyzed 1917 by T. W. 
 R. B. A. C-558. 
 
Chemical Analyses of Texas Bocks and Minerals 161 
 
 2964. El Paso County. From Cooksey Ranch, east of Block 46. 
 
 Analyzed 1904 by S. H. W. B. A. C939. 
 
 2965. DeWltt County. Water from Heaton Bros., Cuero. Analyzed 
 
 b^S. H. W. T. M. S. A. No. 2651. 
 
 2966. Dickens County. From head of salt creek on H. & G. N. Ry. 
 
 Survey No. 25. Block No. 8, Spur Ranch. Analyzed by J. E. 
 S. B. A. No. 2525. 
 
 2967. Dickens County. Same as above, except Survey No. 14, Block 
 
 No. 2. B. A. No. 2526. 
 
 2968. Dickens County. East side of lake on H. & G. N. Ry. Sur- 
 
 vey No. 65. Block No. 8, Spur Ranch. Analyzed by J. E. S. 
 B. A. No. 2527. 
 
 2969. Clckens County. West side of Salt Lake, on the H. & G. N. 
 
 R|y. Survey No. 65. Block 8. Spur Ranch. Analyzed 
 by J. E. S. B. A. No. 2528. 
 
 2970. Ellis County. City water from Dr. J. E. Sewell, Midlothian, 
 
 Texas. Analyzed for drinking purposes by S. H. W. B. A. 
 C941. 
 
 2971. El Paso County. Spring water from El Paso. Collected by 
 
 G. W Hoffmann. Analyzed 1914 by W. T. R. B. A. 
 C924. 
 
 2972. El Paso County. Mineral Spring water from El Paso. 
 
 Analyzed 1914 by W. T. R. B. A. C925. 
 
 2973. El Paso County. From El Paso Ry. Co., El Paso. Analyzed 
 
 19113 by J. R. B. B. A. C926. 
 
 2974. Falls County. Water from R. H. Waters, Rose Bud. 
 
 Analyzed by O. H. P. B. A. €940. 
 2 975. Grayson County. Prom L. A. Robertson, manager of Star 
 Mineral Well, Tioga, Texas. Analyzed 1903 by S. H. W. 
 B. A. C962. 
 
 2976. Grayson County. Water from S. S. Winsett, Sherman^ R. F. 
 
 D. No. 3. Analyzed 1904 by S. H. W. B. A. C961. ' 
 
 2977. Grayson County. From C. G. Cannaday, Tioga, Texas. 
 
 Analyzed 1903 by S. H. W. B. A. C963. 
 
 2978. Grayson County. From G. B. Marshall, Tioga, Texas. 
 
 Analyzed 1903 by S. H. W. and Blackburn. B. A. C964. 
 
 2979. Grayson Count|y. From J. L. Harbison, Collinsville. Analyzed 
 
 1903 by S. H. W. B. A. C945. 
 
 2980. Hill County. From R. H. Baker, Hillsboro. Analyzed 1902 
 
 by S. H. W. B. A. C969. 
 
 2981. Lavaca County. From L. W. Jelinek, Halletsville, mineral 
 
 water. Analyzed 1901 by S. H. W. B. A. C948 
 
 2982. Leon County. From Oliver Drug Company, Buffalo. 
 
 Analyzed by O. B. HarginS. B. A. C949. 
 
 2983. Liihestone County. From Citizens Water & Ice Co., Groes- 
 
 beck. Analyzed 1904 by S. H. W. B. A. C960. 
 
162 University of Texas Bulletin 
 
 2 984. LaSalle County. Fowler Bros. Land Co., Fowlerton, Texas. 
 Analyzed 191,2. B. A. C927. 
 
 2985. LaSalle County. Fowler Bros. Land Co., Fowlerton. Sent 
 
 by B. D. Hatcher, manager. Analyzed 1912. B. A. C928. 
 
 2986. LaSalle County. Fowler Bros. Land Co., Fowlerton. Sent 
 
 by B. D. Hatcher, manager. Analyzed 1912. B. A. C929. 
 
 2987. McCullough County. From Conley Grocery Co., Brady. 
 
 Analyzed 1903 by S. H. W. B. A. C934. 
 
 2988. Mavericlc County. From Rio Grande Water & Power Co., 
 
 Eagle Pass. Analyzed by S.. H. W. T. M. S. A. No. 2875. 
 
 2989. Milam County. From J. D. Hefley, Cameron. Analyzed 1903 
 
 by S. H. W. B. A. C9«6. 
 
 2989a. Nolan County. From West Texas Electric Co., Sweetwater. 
 Analyzed 1918 by J. E. S. B. A. C-740. 
 
 2989b. Palo Pinto County. From Mineral Wells Electric Co., Min- 
 eral Wells. Analyzed 1918 by J. E. S., B. A. C-750. 
 
 2-990. Palo Pinto County. From Colonial Hotel, Mineral Wells. 
 Analyzed by W. T. R. B. A. C950. 
 
 29 91. Pecos County. Toyah Valley. Avary water, 16 miles east 
 of Pecos. Sent by P. A. Whaley. Analyzed 1912 by S. 
 H. W. B. A. 154. 
 
 2992. Pecos County. Toyah Valley. Lagoon water, 21 miles from 
 
 Pecos. Analyzed 1912 by S. H. W. B. A. 163. 
 
 2993. Pecos County. Toyah Valley. Morris water, sampled 16 
 
 miles from Pecos. Analyzed Jan. 1912 by S. H. W. B. 
 
 A. 164. 
 29 94. Pecos County. Toyah Valley. Lewis water, 2 5 miles from 
 
 Pecos. Analyzed 1912 by S. H. W. B. A. 165. 
 29 95. Pecos County. Toyah Valley. From 8 milse S. E. of Toyah. 
 
 Analyzed 1911 by S. H. W. B. A. 147. 
 
 2996. Pecos County. Toyah Valley. Chris Ritz water, 8 miles 
 ' ' east of Pecos. Sent by P. A. Whaley. Analyzed 1911 by 
 
 S. H. W. B. A. 153. 
 
 2997. Pecos County. Toyah Valley. Boyd water. Analyzed 
 
 1912 by S. H. W. B. A. 194. 
 299 8. Pecos County. Toyah Valley. Sample marked "Helder." 
 
 Analyzed 1912 by S. H. W. B. A. 195. 
 2998a. Potter Countp^. From Amarillo Oil Co., Amarillo. Analyzed 
 
 by J. E. S. in 1918. B. A. C-749. 
 2 999. Presidio County. Mineral water sent by T. H. Rowls, Marfa. 
 
 Analyzed by O. D. Hargis, 1903. A strongly acidic alum 
 
 water. ,B. A. C937. 
 
 3000. Presidio' County. - From Gus Elmendorf, Marfa. Analyzed 
 
 by S. H. W. B. A. C947. 
 
 3001. Tyler County. Prom Dr. D. McMickin, Woodville. Analyzed 
 
 1904 by S. H. W. B. A. C946 
 
Chemical Analyses of Texas Bocks and Miyierals 163 
 
 3002. Travis County. 3002-3009, inclusive, sent by Major Little- 
 field of Austin. B. A. Nos. 2874-82 Inclusive. 
 
 3009a. Walker County. From Huntsville Electric Light & Power 
 Co., Huntsville. Analyzed 1917 by T. W. R. B. A. 
 
 C-606. 
 
 3010. Webb County. Laredo Light & Ry Co., Laredo. Analyzed 
 1902 by S. H. W. B. A. C95n 
 ■ 3011. Williamson County. From the mayor of Taylor. Analyzed 
 by S. H. W. B. A. C953. 
 
 MINERALS OF DEFINITE COMPOSITION 
 
 Analyses of minerals of Texas have been made in some cases 
 for accurate determination of their composition. In other cases, 
 they have been made for determining some ingredients of prob- 
 able economic value. The latter are mpstly only partial 
 analyses. 
 
 The Table of Contents in front presents an alphabetical list 
 of the minerals of which analyses are presented here. 
 
 Anal No. 
 
 ?012."| Brewster County. Kleinite from Terlingua, Texas. 3012- 
 8020.1 3020, inclusive. Analysis made by miscellaneous methods. 
 J U. S. G. S. Bui. 405, p. 41. 
 
 3021. Brewster County. Kleinite, from Terlingua, Texas. Aver- 
 
 age of several determinations by W. F. Hillebrand, reduced 
 to a gangue-free basis. XJ. S. G. S. B. 591, p. 290. 
 
 3022. Brewster Countjy. Terlinguaite from Terlingua, Texas. U. 
 
 S. G. S. B. 591, p. 289. 
 
 3023. Brewster County. Eglestonite from Terlingua, Texas. 
 
 Analyzed by Hillebrand and Schaller. 3023-3025, inclusive. 
 U. S. G. S. B. 591, p. 289. 
 
 3070. Brown County. Bpsomite. Epsomite occurs in large 
 
 quantities in Brown County, and of a purity sufficient (to 
 make it the source of an exceedingly cheap commercial 
 product. Tex. Acad. Sci. V. 2., Ft. 2., pp. 91-92, 1899. 
 Analyzed by H. W. H. 
 
 3071. Brown County. Epsomite. Same as above. 
 
 3028. Burnet County. Gadolinite. Sent by Earl Hidden. Analyzed 
 
 by F. A. Genth. Includes the Fez O3 and SiOj insoluble 
 In dilute sulphuric acid. Tex. Acad. Sci. Ill, p. 116. 
 
 3029. Burnet County. Gadolinite. Sent by Earl Hidden. Analjyzed 
 
 by F. A. Gent. Tex. Acad. Sci. Ill, p. 116. 
 3026. Culberson County. Asbolite from Sec. 30, Township 8, 
 block 66, Culberson County. From T. R. Owen, Sierra 
 
164 University of Texas Bulletin 
 
 Blanca, Texas. Analyzed March 31, 1914, by S. H. W. 
 B. A. No. 1460. 
 3027. Culberson County. Bauxite from northern part of Culber- 
 son County. Sent b|y S. H. Worrel, Sierra Diablo Range. 
 Analyzed by S. H. W. B. A. No. 923. 
 
 3039. Culberson County. Wolframite. From north of Van Horn, 
 
 Culberson County, (35 miles) being near Figure 2 Ranch. 
 Sent by S. H. W. Analyzed Nov. 6, 1912. B. A. No. 399. 
 
 3040. Culberson County. Same as above, except B. A. No. 400. 
 
 3037. Edwards County. Halloysite. Analyzed by McNeill., U. S. 
 
 G. S. B. 591, p. 341, 
 
 3038. El Paso County. Borax. From evaporation crust on lake, 
 
 about 2 miles S E. of Salt Lake, Trans-Pecos region. 
 Anal,yzed by E. M. S. of El Paso. U. S. G. S. B. 260, p. 
 579. 
 3064. Fayette County. Grahamite. Section at O'Quinn Creek. 
 Analyzed 1889 by L. E. Magnenat. Tex. Acad. Sci. III.; 
 p. 96. 
 
 3033. Jones County. Chalcocite Nodules. Near Avoca, Texas. 
 
 Analyzed by H. A. Tobelmann. Economic Geology. Vol. 
 10, p. 642. 
 
 3034. Jones Country. Chalcocite Pseudomorph. From Avoca Area. 
 
 Analyzed by H. A. T. Econ. Geo. Vol. 10, p. 642. 
 
 3030. Llano County. Gadolinite. Analyzed by Eakins. U. S. G. 
 
 S. B. 591, p. 319. 
 
 3031. Llano County. Gadolinite. 3031-3032, inclusive. Sent by 
 
 Earl Hidden. Analyzed by F. A. Gent. Tex. Acad. Sci. 
 in, p. 116. 
 
 3035. Llano County. Soapstone. From near Valley Spring, Llano 
 
 County. Analyzed by J. E. S. B. A. No. 1595. 
 
 3036. Llano County. Baryte. From N. J. Badu, Llano, Texas. 
 
 Sample ^yields 89.45% BaSO, and 2.84% gypsum. Analyzed 
 by J. E. S. B. A. No. 2809. 
 
 3041. Llano County. Rowlandite. From Barringer Hill, Llano 
 
 County. Analyzed by W. F. H. U. S. G. S. B. 591, p. 320. 
 
 3042. Llano Count|y. Spessarlte. From Horse Mountain, 5 miles 
 
 north of Llano. Analyzed by Dr. W. M. Melville. T. M 
 S. B. 5, p. 7 6. 
 
 3043. Llano County. Thorogumite. A hydrated uranium Thoro- 
 
 silicate. From Barringer Hill, Llano County. T. M. S. 
 B. 5, p. 80. 
 
 3044. Llano County. Nivenlte (Uraninite) U. S. G. S. B. 591, p. 367. 
 
 3045. Llano County. Nivenite (Uraninite) from Barringer Hill. 
 
 Analyzed by Hidden and Mackintosh. T. M. S. B. V, p. 60. 
 
 3046. Llano County. Fergusonite. Barringer Hill. Monohydrated. 
 
 Tex. Acad. Sci. U, p. 139-140. 
 
Chemical Analyses of Texas Bocks and Minerals 165 
 
 3047. Llano County. Same as above, except Tri-hydrated. 
 
 3048. Llano County. MacklntosMte. Barringer Hill. Analyzed 
 
 by W. F. H. U. S. G. S. B. 591, p. 320. 
 
 3049. Llano County. Macklntoshite. Same as above. Analysis 
 
 made with utmost care on a small sample. Selected grain 
 by grain, but was evidently not much purer than the ilrst 
 lot. 
 
 3050. Llano County. Tengerite. Barringer Hill. Sent by W. E. 
 
 Hidden. Analyzed by W. F. H. Magnesia, alkalies, etc., 
 undetermined. U. S. G. S. B. 591, p. 297. 
 
 3051. Llano County. Metagadolinite. Barringer Hill. T. M. S. B. 
 
 V. 5, p. 56. 
 
 3052. Llano County. Powerlite. From Barringer Hill. Chreous, 
 
 Coating Molybdenite. Sp. Gr. 4.15. U. S. G. S. B. 591, 
 p. 364. 
 
 3053. Llano County. Yttrialite. From Barringer Hill. Tex. Aca<l. 
 
 Sci. Ill, p. 136. 
 
 3054. Llano County. Yttrialite. From Barringer Hill. Analyzed 
 
 by W F. H. U. S. G. S. B. 419, p. 275. 
 3065. Llano County. Allanite (silicate of aluminum, calcium, iron 
 and the rare metals). Mexican diggings, Babyhead Creek, 
 Barringer Hill. Analyzed by W. Muthmann and L. Stuetzel 
 of the Royal Academy of Science, of Munich, 1900, T. M. 
 S. B. 5, p. 6. 
 
 3073. Llano County. Graphite from "Buda place, 6 miles east of 
 
 Llano." 
 
 3074. Llano County. Graphite. A general sample was made of 
 
 all the samples secured underground and crushed to pass 
 a 10-mesh sieve. U. S. G. S. Min. Res. 1913., Part II., p. 
 230. Sample sent by Sidney Paige of U. S. G. S. 
 3062. Presidio County. Jet. From San Carlos Coal Field. Sent 
 by Dr. J. A. Udden, July 1913. Analyzed by S. H. W. B. 
 A. No. 848. 
 
 3055. Mason County. Tephroite. From Kothmann Tract, 3 miles 
 
 S. E. of Spiller Mine, Mason County. "A protoxide silicate 
 of manganese." Analyzed by W. A. N. 
 
 3056. Mason County. Andradite. From the Kothmann Tract, 15 
 
 miles N. E. of Mason. Analyzed R. M. B. Massive semi- 
 crystalline; color, chocolate-brown; streak, light brown; 
 lustre, resinous. T. M. S. B. V., p. 8. 
 
 3057. Mason County. Same as above, except that color, deep yel- 
 
 low, lustre resinous to vitreous. Crystalline. 
 3027b. Reeves County. Bauxite. 11 miles west by northwest of 
 Toyah. Sample secured by A. J. Martin, 1917. B. A. 
 C372. 
 
166 University of Texas Bulletin 
 
 3027c. Reeeves County. Bauxite, another sample of same deposit 
 from whiclL preceding sample was obtained. B. A. C370. 
 
 3058. San Saba County. Onyx. Golden Onj^x from B. R. Russell's 
 
 Ranch 9 miles S. E. of town of San Saba. B. A. C972. 
 
 3059. San Saba County. Oynx. Same as above, except Black 
 
 Onyx. B. A. C973. 
 3066. Travis County. Celestite. From deposit of celestite at Mt. 
 
 Barker, 3% miles N. W. of Austin. Analyzed 19 04 by O. 
 
 H. P. T. M. S. A. No. 3038. 
 3061. "Uvalde County. Augite. Prom Black Mountain, Uvalde 
 
 Quadrangle. U. S. G. S. B. 591, p. 59. 
 3063. Webb County. Grahamite. From between Eagle Pass and 
 
 Hidalgo. Section at Webb Bluff. Analyzed by L. B. Mag- 
 
 nenat 1889. Tex. Acad. Sci. III., p. 95. 
 
 METEORIC IRON 
 
 A score of meteors have been found in Texas and' about half 
 of these have been meteoric iron, Analyses have no doubt been- 
 made of other iron meteors than those here given. These are 
 recorded merly as a matter of passing interest. 
 
 Anal No. 
 
 3133. Bosque County. Meteoric iron from 6 iniles S. W. of Ire- 
 
 dell. Analyzed 1899 by J. E. Whitfield. T. M. S. B. 5, p. 56. 
 
 3134. Denton Country. Meteroic iron. Analyzed 1860 by Prof. 
 
 W. T. Ridden. T. M. B. 5, p. 56. 
 
 3135. Payette County. Meteorite. Analyzed 1917 by J. E. S. 
 
 Sent by George Bruns, Route 4, LaGrange, Texas. B. A. 
 No. C429. 
 
 3136. Fayette County. Meteoric iron. From Bluff, Fayette County. 
 
 Analyzed 1888 by J. E. Whitfield in Chem. Lab. of U. S. 
 G. S. T. M. S. B. v., p. 56. 
 
 3137. Hamilton County. Meteoric iron, marked "Hamilton County 
 
 Meteorite.'' From northern part of county. Analyzed 
 1890' by L. G. Eakins, of U. S. G. S. lab. T. M. S. 
 B. 5, p. 56. 
 
 3138. Maverick County. Meteorite, labelled "Maverick County Me- 
 
 teorite." Found near Ft. Duncan, June 1882. Analyzed 
 by J. B. Macintosh. T. M. S. B. 5, p. 67. 
 
 3139. McLennan County. Meteoric iron from near Mart. Analyzed 
 
 by H. N. Stokes. U. S. G. S. B. 419, p. 239. 
 
 3140. Tom Green County. Meteoric iron marked "San Angelo Me- 
 
 teorite." Found 7 miles south of San Angelo. Analyzed 
 1898 by. Martin and Haskins, Chicago, 111. Specimen from 
 Univ. of Texas. T. M. S. V. 5, p. 57. 
 
Chemical Analyses of Texas Bocks and Minerals 167 
 
 3141. Travis County. Meteoric iron (Stony Meteorite). Analyzed 
 
 by L. G. Ealuns, U. S. G. S. Cliem. Lab., Record No. 1097. 
 U. S. G. S. B. 419, p. 235 
 
 3142. Wichita .County. Meteoric iron, marlced "Wicliita County 
 
 Meteorite." Long held by the Comanches as an object of 
 worship. Removed to Ft. Belknap, 1858, by Major Neigh- 
 bors. Analyzed by J. W. Mallett, 1884. T. M. S. B. 5, 
 p. 58. 
 
 BAT GUAXO 
 
 Deposits of bat guano are quite common in caves in our great 
 limestone region, also known as the Edwards Plateau. Other 
 deposits of this kind have been discovered in eaves in the moun- 
 tains of the Trans-Peeos country. Some of the deposits have 
 evidently been leached and considerably altered. 
 
 Anal. No. 
 
 3143. Blanco County. Bat guano from Blowout, Blanco County. 
 
 Analyzed 1904. U. of T. Min. Sur No. 3048. Analyzed 
 by O. H. P. 
 
 3144. Blanco County. Same as above. 
 
 314 5. Burnet County. Bat Guano from Marble Palls. Analyzed 
 1905 by O. H. P. Tex. M. S. No. 3226. 
 
 3146. Comal County. Bat Guano from New Braunfels. T. M. S. 
 
 No. 3005. Analyzed by S. H. W. July 29, 1904. 
 
 3147. Travis County. Bat Guano from Eckles Cave. Analyzed 
 
 1902 by S. H. W. U. of T. M. S. No. 1475. 
 
 WOODS 
 
 Some analyses of native woods made by the Bureau of 
 EcBnomic Geology are interesting as showing their normal con- 
 tents of ash. 
 
 Anal. No. 
 
 3148. Travis County. Sample furnished by H. B. Beck. Mesquite 
 
 wood. Anal,yzed by S. H. W. 1912. B. A. 58. 
 
 3149. Travis County. Mulberry, well seasoned. Analyzed by S. 
 
 H. W. 1912. B. A. 350. 
 
 3150. Travis County. Well-seasoned Post-oak. Analyzed by S. 
 
 H. W. 1912. B. A. 351. 
 
 3151. Travis County. Well-seasoned Sycamore. Analyzed b,y 
 
 S. H. W. 1912. B. A. 352. 
 
 3152. Travis County. Well-seasoned Hickory. Analyzed by S. H. 
 
 W. 1912. B. A. 353. 
 
168 University of Texas Bulletin 
 
 3153. County not given. Long leaf yellqw pine from east Texas. 
 
 Analyzed b^y S. H. W. 1912. B. A. 575. 
 
 3154. County not given. Chinaberry. Analyzed by S. H. W. 1912. 
 
 B. A. 343. 
 
 3155. Travis County. Bastrop Pine. Furnished by Mr. H. B. Beck. 
 
 Analyzed by S. H. W. 1912. B. A. 344. 
 
 3156. Travis County. Willow, well-seasoned. Analyzed by S. H. 
 
 W. 1912. B. A. 349. 
 
Chemical Analyses of Texas Bocks and Minerals 169 
 
 PART T^O 
 
 I. SAND AND SANDSTONE 
 
 Anal. 
 
 
 
 
 
 
 
 
 
 
 Ignition 
 Loss 
 
 
 No. 
 
 Si 02 
 
 AI2O3 
 
 i'ea Oa 
 
 CaO 
 
 MgO 
 
 K2O 
 
 Na^O 
 
 OO2 
 
 SO3 
 
 Total 
 
 1 
 
 62.80 
 77.40 
 39.50 
 48.00 
 72.00 
 73.00 
 66.60 
 6S.28 
 88.00 
 77.90 
 98.60 
 92.14 
 88.80 
 77.40 
 57.00 
 74. C« 
 86.20 
 90.28 
 81.92 
 63.18 
 95.96 
 65.40 
 5.00 
 17.20 
 81.30 
 97.00 
 83.32 
 67.80 
 80.30 
 
 3.51 
 
 7. 
 
 3.70 
 
 6.84 
 
 13.60 
 
 10.43 
 S.85 
 7.12 
 4.42 
 
 11.41 
 0.36 
 1.07 
 
 None 
 8.43 
 
 "io'is 
 
 7.82 
 1.70 
 2.88 
 2.04 
 2.68 
 16.00 
 7.10 
 2.95 
 4.69 
 1.05 
 5.81 
 3.86 
 7.87 
 0.98 
 1.21 
 7.50 
 
 38.49 
 20 
 1.70 
 1.86 
 4.20 
 3.76 
 3.90 
 4.50 
 1.22 
 4.05 
 0.34 
 2.89 
 1.81 
 4.12 
 34.10 
 5.35 
 4.68 
 1.10 
 0.76 
 Trace 
 Trace 
 5.50 
 1.10 
 1.65 
 0.61 
 0.86 
 2.15 
 1.07 
 2.83 
 0.30 
 Trace 
 S.OO 
 1.00 
 
 
 
 
 
 
 
 5.30 
 6.60 
 
 99 80 
 
 2 
 
 Trace 
 29.16 
 20.33 
 4.10 
 4.31 
 6.00 
 8.51 
 0.80 
 0.60 
 0.08 
 1.62 
 1.38 
 2.32 
 
 Trace 
 
 """i"oi 
 1.27 
 1.25 
 0.80 
 1.28 
 0.72 
 
 0.' 
 
 50 
 
 
 
 90.60 
 
 3 
 
 22.91 
 13.50 
 3.30 
 3.80 
 5.98 
 12.10 
 0.80 
 0.90 
 
 
 96.97 
 
 4 
 
 3.09 
 0.21 
 0.21 
 
 0.21 
 
 1.65 
 
 Trace 
 
 4.80 
 2.28 
 1.60 
 0.25 
 0.00 
 1.90 
 4.56 
 1.00 
 1.42 
 1.92 
 2.34 
 6.70 
 9.60 
 0.30 
 0.20 
 1.86 
 3.08 
 
 100.09 
 
 5 
 
 
 
 
 
 100.96 
 98.25 
 
 7*' 
 
 s 
 
 6.00 
 
 1.60 
 
 98.88 
 99.00 
 
 
 
 
 99.61 
 
 
 0.79 
 
 
 
 100.21 
 
 11 
 
 
 
 100.38 
 
 
 
 
 
 1.20 
 2.68 
 2.36 
 0.60 
 
 6^69 
 0.55 
 0.84 
 
 100.24 
 
 13 
 
 14 
 
 1.45 
 1.40 
 
 
 
 99.80 
 99.97 
 
 15 
 
 
 
 99.24 
 
 
 Trace 
 
 1.09 
 
 0.40 
 
 0.48 
 
 20.52 
 
 Trace 
 
 8.76 
 
 43.68 
 
 41.18 
 
 6.96 
 
 0.50 
 
 1.33 
 
 6.S4 
 
 None 
 
 Trace 
 
 14.60 
 
 8.00 
 
 0.62 
 
 Trace 
 
 
 
 99.36 
 
 17 
 
 
 
 1.10 
 
 None 
 
 0.70 
 
 11.60 
 
 l.ll 
 
 100.19 
 
 18* 
 19 
 
 . 1.55 
 0.51 
 
 0.80 
 3.29 
 
 3.10 
 6.26 
 
 99.1s 
 100.16 
 100.32 
 
 21 
 
 
 
 
 98.64 
 
 22 
 
 0.43 
 
 2.28 
 
 2.17 
 
 3.35 
 
 35.75 
 
 32.36 
 
 4.20 
 
 0.40 
 
 0.80 
 
 8.30 
 
 None 
 
 1.25 
 0.69 
 0.83 
 None 
 0.77 
 1.92 
 6.32 
 1.51 
 
 0.89 
 6.25 
 2.64 
 2.40 
 0.10 
 3.94 
 4.90 
 6.62 
 
 100.08 
 99.57 
 
 24 
 25 
 
 None 
 
 1.12 
 0.46 
 0.87 
 Trace 
 None 
 0.30 
 
 
 
 
 98.81 
 100.06 
 
 26 
 
 
 
 
 100.67 
 100.39 
 
 ' 28 
 29 
 
 0.41 
 
 1.78 
 
 100.24 
 100.00 
 
 <in+ 
 
 0. 
 
 46 
 
 100.82 
 
 31 71 02 
 
 10.24 
 6.00 
 
 1.20 
 
 oTio 
 
 
 98.24 
 
 32«, 70.00 
 33 97.00 
 
 2.50 
 
 2.00 
 
 0.40 
 
 99.70 
 100.32 
 
 
 
 
 
 •Contains trace of Mn02 anri PsOa 
 tTrace of sulfur. 
 
17U 
 
 University of Texas Bulletin 
 
 n. GEBENSAND 
 
 Ser 
 No 
 
 SiO= 
 
 9.20 
 
 16.10 
 30.63 
 35.18 
 42.12 
 
 80.80 
 20.95 
 25.96 
 30.85 
 32.00 
 14.40 
 
 29.40 
 45.70 
 49.47 
 47.00 
 16.30 
 43.10 
 30.00 
 74.90 
 24.68 
 
 'vi'.zi 
 
 45.80 
 
 30.60 
 
 32.00 
 20.10 
 
 AI2O3 
 
 FeaOs 
 
 PeO 
 
 CaO 
 
 MgO 
 
 K2O 
 
 Na'aO 
 
 CO2 
 
 P2OB 
 
 SOa 
 
 flaO 
 
 Org. 
 
 Mafr 
 
 Total 
 
 
 7.48 
 
 13.09 
 4.36 
 5.30 
 8.35 
 
 
 
 29.61 
 
 9.80 
 17.26 
 16.00 
 
 8.00 
 
 0.99 
 1.81 
 5.20 
 0.60 
 0.66 
 3.05 
 
 20.00 
 t!.70 
 1.48 
 7.58 
 G.34 
 1.07 
 
 10.80 
 0.90 
 
 10.83 
 
 
 
 
 29.80 
 
 8.00 
 6.00 
 
 14.80 
 11.00 
 
 N.D. 
 
 N. D. 
 
 N.D. 
 
 N.D. 
 
 N.D. 
 
 N.D. 
 13.00 
 
 4.21 
 
 1.88 
 5.29 
 3.30 
 3.30 
 
 Trace 
 0.00 
 0.38 
 0.41 
 0.42 
 0.64 
 
 Trace 
 0.12 
 0.072 
 0.56 
 0.25 
 0.17 
 0.44 
 0.08 
 0.34 
 0.64 
 
 0.77 
 
 "i"s7 
 
 2.06 
 0.00 
 
 2.69 
 
 Trace 
 
 Trace 
 1.51 
 0.22 
 0.34 
 0.25 
 0.69 
 0.60 
 0.84 
 
 
 
 
 34 
 
 15.31 
 
 3. 10 
 
 3.53 
 10. 10 . 
 9. 00 
 
 9.60 
 
 5.65 
 
 5.85 
 
 6.00 
 
 e.3B 
 
 14.00 
 
 2. a> 
 uTir 
 
 N.D. 
 N.D. 
 N.D. 
 N.D. 
 N.D. 
 8. 16 
 
 99.38 
 
 1.48 
 
 Trace 
 Trace 
 
 0.72 
 1.46 
 1.40 
 1.46 
 1.14 
 6.00 
 
 2.S8 
 2.00 
 
 5.70 
 4.76 
 '3.46 
 0.68 
 
 0.04 
 
 10.77 
 
 1.69 
 
 1.61 
 
 0.66 
 0.93 
 0.13 
 1.72 
 0.66 
 4.61 
 
 3.41 
 4.67 
 0.13 
 1.27 
 0.60 
 0.66 
 0.80 
 1.27 
 0.35 
 
 '"i'46 
 
 1.14 
 
 2.05 
 
 Trace 
 2.66 
 4.89 
 
 2.26 
 
 '"iT39 
 0.85 
 
 2.90 
 3.94 
 2.12 
 3.44 
 3.77 
 Trace 
 
 Trace 
 1.20 
 2.17 
 4.65 
 6.15 
 3.66 
 4.41 
 6.67 
 0.66 
 
 
 35 
 36 
 37 
 38 
 
 49.46 
 13.10 
 17.25 
 20.25 
 
 94.11 
 
 100;48 
 
 100.17 
 
 99.38 
 
 39 
 40 
 41 
 42 
 43 
 44 
 
 45 
 46 
 47 
 48 
 
 ^ 
 51 
 52 
 
 '16^28 
 11.20 
 16.87 
 20.66 
 2.07 
 
 7.46 
 18.09 
 24.29 
 
 9.78 
 
 6.53 
 13.66 
 14.11 
 
 9.30 
 13.96 
 
 22'.20J 
 
 47.62 
 45.25 
 36.83 
 34.64 
 66.23 
 
 5.6OI 14.54 
 
 4.00, 4.71 
 
 6.761 
 
 21.42 
 
 39.47 — ... 
 
 27.64 
 
 25.09 
 
 5.50 
 
 27. 22 
 
 100.46 
 98:64 
 97.48 
 98.18 
 
 loo.ao 
 
 99.90 
 
 100.29 
 100.09 
 100.15 
 
 looTos 
 
 65 
 
 10.64 
 
 1.70 
 
 
 6. 12 
 4.21 
 
 
 2.20 
 
 2.31 
 
 5.18 
 11.20 
 
 2.23 
 
 3.66 
 
 11.20 
 Trace 
 
 6.00 
 
 Trace 
 
 Trace 
 1.90 
 
 O.fifi 
 
 None 
 6.90 
 
 Trace 
 
 0.41 
 
 0.83 
 0.76 
 
 0.91 
 
 0.31 
 
 0.78 
 
 0.37 
 
 Trace 
 
 Trace 
 
 
 56 
 
 24.47 
 
 38.40 
 4.93 
 
 14.49 
 
 100.89 
 
 57 
 
 17.00 
 
 100.13 
 
 58 
 59* 
 €0 
 
 
 54.60 
 32.34 
 
 
 104.69 
 
 is. 50 
 N.D. 
 
 S. 70 
 
 90.27 
 
 
 15.30 
 
 24.40 
 
 17.14 
 
 12.26 
 
 6.30 
 
 4.32 
 
 
 11.20 
 
 "¥.90 
 1.80 
 
 0.29 
 0.32 
 0.19 
 Trace 
 Trace 
 Trace 
 Trace 
 
 Trace 
 
 Trace 
 
 Trace 
 
 1.27 
 
 Trace 
 
 Trace 
 
 4.79 
 
 0.22 
 
 0.12 
 
 
 61 
 62t 
 63 
 64 
 
 5. 
 0.78 
 Trace 
 0.70 
 2.05 
 0.68 
 2.62 
 
 2.48 
 
 4.15 
 2.28 
 2.48 
 2.67 
 3.62 
 Trace 
 3.29 
 
 0.99 
 
 10 
 4.46 
 2.83 
 2.96 
 1.14 
 2.08 
 3.62 
 
 1.58 
 
 4.04 
 4.97 
 3.63 
 5.26 
 2.37 
 0.42 
 4.66 
 
 0.66 
 
 102.01 
 
 15.30 
 
 17.60 
 
 18.75 
 
 6.85 
 
 24.25 
 
 0.82 
 
 0.13 
 
 12.01 
 
 98.73 
 
 65 
 66 
 67 
 
 33.45 
 34.10 
 47.10 
 
 48.30 
 
 25.20 
 30.40 
 16.60 
 7.40 
 32.10 
 20.70 
 26.30 
 
 37.50 
 
 20.39 
 14.58 
 4.66 
 
 8.81 
 
 6.36 
 
 2.06 
 
 21.43 
 
 15.69 
 14.94 
 2..30 
 
 1.65 
 8.28 
 6.83 
 
 2.06 
 
 2.96 
 2.46 
 4.11 
 6.6S 
 1.98 
 1.31 
 0.90 
 
 2.39 
 
 5.06 
 3.68 
 2.81 
 
 1.44 
 
 4.68 
 3.92 
 4.76 
 8.28 
 5.20 
 0.67 
 1.60 
 
 0.80 
 
 0.74 
 0.55 
 0.69 
 
 0.89 
 
 1.33 
 0.61 
 0.72 
 0.73 
 0.98 
 0.12 
 0.38 
 
 0.82 
 
 14.65 
 19.00 
 7. 00 
 
 100.07 
 99.90 
 99.26 
 
 68 
 
 34. 19 
 
 99.76 
 
 3. 11 
 3. 11 
 
 13.50 
 5.20 
 
 16.10 
 5.00 
 
 
 69 
 70 
 71 
 72 
 73 
 74 
 75 
 
 16.54 
 7.40 
 27.81 
 
 8.89 
 
 68. 
 
 52. 
 
 67. 
 
 53. 
 12.71 
 44.62 
 29.69 
 
 68 
 60 
 00 
 40 
 20.39 
 
 100.04 
 100.25 
 100.56 
 97.72 
 100.09 
 
 96.45 
 
 76 
 
 32. 33 
 
 13. 
 
 02 
 
 99.31 
 
 *Oontaina 1.65 per cent Ifn. 
 ^Contains 1.S9 per ceat Mn. 
 
Chemical Analyses of Texas Bocks and Minerals 171 
 
 III. ALLUVIUM 
 
 
 6 
 
 O 
 
 < 
 
 O 
 
 Pi 
 
 O 
 
 O 
 
 d 
 
 O 
 D 
 
 O 
 
 fcx 
 
 O 
 
 O 
 
 la 
 
 O 
 
 O 
 
 6 
 
 
 
 
 
 
 I 
 
 77 
 
 98.80 
 64.22 
 10.20 
 
 1.30 
 76.00 
 61.36 
 58.60 
 39.16 
 52.60 
 50.06 
 67.98 
 
 8.40 
 60.96 
 53.60 
 57.38 
 34.60 
 
 1.00 
 14.02 
 2.13 
 
 
 
 
 
 
 
 
 
 
 
 
 0.48 
 5.74 
 0.62 
 1.21 
 0.00 
 
 10.46 
 7.16 
 6.87 
 3.65 
 
 16.48 
 9.07 
 6.70 
 3.00 
 
 100.28 
 
 •78 
 79 
 
 2.16 
 1 .17 
 
 1.25 
 
 
 4.01 
 45.08 
 52.88 
 
 4.63 
 
 6.96 
 12.11 
 25.41 
 21.05 
 13.94 
 
 8.98 
 44.00 
 12.00 
 16.80 
 14.34 
 21 .'48 
 
 i.ii 
 
 2.22 
 0.38 
 0.66 
 0.92 
 0.88 
 
 Trace 
 
 Trace 
 1.70 
 1.03 
 0.47 
 
 Trace 
 1.20 
 
 Trace 
 0.15 
 
 2.19 
 
 1.04 
 
 1.10 
 37.10 
 41.19 
 0.30 
 4.10 
 6.80 
 19.49 
 15.75 
 
 33T2O 
 9.10 
 11.64 
 11.20 
 16.60 
 
 ------ 
 
 0.10 
 0.67 
 0.69 
 3.57 
 0.82 
 0.63 
 0.96 
 1.23 
 0.05 
 Trace 
 
 
 
 B9.97 
 99.49 
 
 80 
 
 0.87 1.13 
 12.88 1.92 
 10 61 a.. -IP 
 
 
 
 
 
 99.65 
 99.86 
 
 82 
 
 
 
 
 
 83 
 
 
 
 
 98 61 
 
 84 
 
 11.04 
 5.24 
 1.41 
 
 10.26 
 7.90 
 3.15 
 6.91 
 9.00 
 6.80 
 
 i;5.02 
 
 1,92 
 2.14 
 3.75 
 3.31 
 2.27 
 3.75 
 '1.25 
 2.60 
 2.56 
 3.02 
 
 
 
 
 
 98.U 
 
 ■ 86 
 
 
 
 
 
 98,27 
 99.34 
 
 86 
 
 
 
 
 
 t87 
 
 t88 
 88 
 
 
 
 0.04 
 0.03 
 
 1.80 
 l.Bl 
 
 0.54 
 0.63 
 
 100.08 
 100.21 
 99.67 
 
 90 
 91 
 
 1.18 
 1.80 
 1.24 
 1.43 
 
 2.00 
 
 Trace 
 
 2.22 
 
 1.43 
 
 
 
 
 
 "oTio 
 
 99.40 
 100 16 
 
 <f 
 
 
 
 99.00 
 
 9S 
 
 
 
 
 
 0.96 
 
 
 
 6.00 
 
 99.60 
 
 •Contained ivater at 100°, 23 per cent. 
 tContained water at 100°, 1.94 per cent. 
 tOontained water at 100°, 0.81 per cent. 
 
 Ilia. CALICHE 
 
 Serial 
 No. 
 
 SiOs 
 
 18.80 
 18.80 
 
 AbOa 
 
 5.80 
 2.11 
 
 Fe2 03 
 
 1.10 
 1.63 
 
 CaO 
 
 31. SI 
 
 41.82 
 
 MgO 
 
 CO2 
 
 S0.1 
 
 Loss on 
 Ignition 
 
 Total 
 
 4.85 
 1.14 
 
 29.94 
 33.36 
 
 0.65 
 1.36 
 
 6.86 
 
 98.21 
 99 63 
 
 
 
 
 IV. CLAY, SHALE AND MARL 
 
 i 
 
 
 
 6 
 
 
 
 a 
 
 
 
 
 
 
 
 
 M 
 
 1 
 
 
 
 
 ■0 
 
 
 
 
 
 6^ 
 
 
 
 94 
 
 21.36 
 
 13.65 
 
 32.21 
 
 • 
 
 19.00 
 
 0.S2 
 
 0.71 
 
 3.39 
 
 none 
 
 0.61 none 
 
 
 5.52 
 
 
 96.77 
 
 
 
 
 
 
 
 
 V 1 1 
 
 
 
 
 
 
 
 
 61.19 
 65.60 
 
 16.74 
 22.50 
 
 5.99 
 1.20 
 
 
 0.90 
 0.70 
 
 'tt'." 
 
 1. S\ 
 
 
 
 1.62 
 1.10 
 
 12.11 
 7.70 
 
 — 
 
 
 96 
 
 Tr. 
 
 1.70 
 
 
 
 
 100.50 
 
 97 
 
 74.30 
 71.30 
 
 16.00 
 19.70 
 
 1.40 
 1.00 
 
 
 Tr. 
 2.10 
 
 none 
 Tr. 
 
 0.60 
 Tr. 
 
 0.60 
 0.08 
 
 
 
 0.50 
 Tr. 
 
 6.07 
 5.80 
 
 
 
 98 
 
 
 
 100.70 
 
 99 
 
 68.46 
 
 21.10 
 
 1.10 
 
 
 1.40 
 
 T-r. 
 
 Tr. 
 
 1.26 
 
 
 
 
 0.05 
 
 6.75 
 
 
 100.10 
 
 100 
 
 72.70 
 
 9.50 
 
 4.10 
 
 
 4.10 
 
 .0.80 
 
 2.40 
 
 Tr. 
 
 
 
 0.60 
 
 4.50 
 
 
 99.10 
 
 101 
 
 70.40 
 
 17.30 
 
 1.80 
 
 
 1.00 
 
 Tr. 
 
 0.60 
 
 2.20 
 
 
 
 O.60 
 
 5.40 
 
 
 99.10 
 
 102 
 
 47.20 
 
 4.10 
 
 2.40 
 
 
 21.00 
 
 1.40 
 
 Tr. 
 
 1.30 
 
 18.10 
 
 
 0.70 
 
 2.90 
 
 
 99.10 
 
 103 
 
 82.84 
 
 3.16 
 
 0.76 
 
 
 5.32 
 
 0.40 
 
 0.90 
 
 0.25 
 
 4.00 
 
 
 0.2c 
 
 2.30 
 
 
 99.72 
 
 104 
 
 66.64 
 
 20.48 
 
 1.44 
 
 
 1.70 
 
 0.32 
 
 1.00 
 
 O.60 
 
 
 
 
 0.27 
 
 7.60 
 
 
 98.93 
 
 105 
 
 68.30 
 
 20.10 
 
 1.00 
 
 
 'I'r. 
 
 2,411 
 
 'IT. 
 
 6(1 
 
 
 
 1.20 
 
 6.60 
 
 
 100.20 
 
 106 
 
 68.70 
 38.06 
 
 16.90 
 11.36 
 
 3.30 
 
 2.60 
 
 
 3.10 
 23.70 
 
 0.50 
 I'r. 
 
 Tr. 
 
 0.68 
 
 0.30 
 1.60 
 
 
 
 1.40 
 0.70 
 
 6.90 
 3.06 
 
 
 99 10 
 
 107 
 
 
 
 100.44 
 
 108 
 
 57.01 
 
 11.85 
 
 3.02 
 
 
 9.56 
 
 1.20 
 
 0.76 
 
 2.01 
 
 
 
 1.13 
 
 4.00 
 
 
 98.53 
 
 109 
 
 65.30 
 50.47 
 
 66.72 
 
 13.66 
 . 18.24 
 
 24.42 
 
 4.S0 
 4.77 
 
 Tr. 
 
 
 9.4« 
 4.30 
 
 0.42 
 
 none 
 Tr. 
 
 Tr. 
 
 
 
 7.45 
 3.25 
 
 none 
 
 0.90 
 
 Tr. 
 
 
 
 8.86 
 0.55 
 
 
 110 
 
 Tr. 
 Tr. 
 
 0.24 
 Tr. 
 
 1.14 
 
 5.70 
 
 98.66 
 
 111 
 
 7.94 
 
 99.60 
 
 112 
 
 71.20 
 
 18.00 
 
 0.60 
 
 
 Tr. 
 
 2.00 
 
 0.90 
 
 0.30 
 
 
 
 0.95 
 
 5.80 
 
 
 99,58 
 
 113 
 
 88.71 
 
 14.88 
 
 2.00 
 
 
 0.30 
 
 0.97 
 
 Tr. 
 
 Tr. 
 
 
 
 0.9C 
 
 2.28 
 
 
 100.04 
 
 114 
 
 73.61 
 
 17.01 
 18.82 
 8.33 
 
 0.50 
 6.33 
 2.99 
 
 ::::: 
 
 0.08 
 0,55 
 0.60 
 
 1.36 
 1.88 
 0.65 
 
 Tr. 
 0.16 
 0.80 
 
 0.15 
 O.08 
 
 
 
 1.57 
 0.96 
 
 6.00 
 4.W 
 S.82 
 
 "SM 
 
 100.65 
 
 115 66.01 
 
 
 
 
 116 76.17 
 
 0.47 
 
 6.083 0.106 
 
 99.86 
 
172 
 
 University of Texas Bulletin 
 
 IV. CLAY, SHALE AND MARL.— Continued 
 
 s 
 
 O 
 
 
 
 O 
 
 a 
 
 o 
 6 
 
 o 
 
 O 
 
 O 
 S 
 
 O 
 
 o 
 
 o 
 
 (3- 
 
 g 
 
 6 
 
 
 11 
 
 i 
 
 117 
 118 
 
 68.66 
 72.64 
 64.14 
 4.54 
 19.34 
 51.90 
 
 64.16 
 19.30 
 
 49. 4f 
 85.60 
 72.7* 
 26. 8f 
 82. 4E 
 45.07 
 66.71 
 
 57.26 
 
 68.70 
 56.10 
 63.80 
 63.21 
 63. 4f 
 69. 6( 
 70.00 
 67.0 
 51.60 
 66.20 
 61.90 
 42.40 
 
 18.53 
 12.11 
 18.81 
 0.7S 
 3.00 
 12.40 
 
 23.67 
 7.88 
 
 0.72 
 3.45 
 6.05 
 1.40 
 2.16 
 4.60 
 
 6.39 
 0.92 
 
 "oTo2 
 
 0.02 
 
 0.13 
 0.04 
 0.05 
 
 'tt.' 
 
 0.60 
 1.46 
 0.74 
 52.04 
 38.50 
 12.50 
 
 0.12 
 38.88 
 
 2.26 
 
 Tr. 
 
 O.OS 
 
 0.90 
 
 0.22 
 
 7.98 
 
 1.28 
 
 1.52 
 1.96 
 1.06 
 3.28 
 1.76 
 1.70 
 8.08 
 2.38 
 0.50 
 0.96 
 1.00 
 0.60 
 lO.Of 
 10.82 
 0.20 
 10.06 
 12.30 
 13.66 
 4.88 
 0.66 
 2.06 
 9.43 
 0.60 
 0.27 
 1.32 
 2.46 
 Tr. 
 1.29 
 Tr. 
 3.14 
 1.69 
 2.23 
 1.62 
 1.82 
 
 2.70 
 1.96 
 3.00 
 1.60 
 0.70 
 
 2.S4 
 
 ceo 
 
 0.12 
 0.26 
 O.30 
 0.24 
 1.00 
 1.40 
 
 0.18 
 O.40 
 
 2.27 
 1.40 
 1.28 
 
 2.72 
 1.7C 
 0.58 
 
 
 
 
 
 0.43 
 
 7.00 
 7.20' 
 8.60t 
 0.50 
 2.30 
 5.60 
 
 :::::: 
 
 100.96 
 
 loo.a 
 
 119 
 
 
 
 
 
 
 1?0 
 
 40.70 
 31.60 
 8.60 
 
 
 
 
 0.90 
 
 100.07 
 
 I'l 
 
 
 
 
 
 122 
 
 1.50 
 
 2. 40 
 
 
 
 
 0.70 
 
 101.40 
 
 T>% 
 
 0. 
 
 40 
 
 6. 22 
 1, W 
 
 
 124 
 
 none 
 
 none 
 
 30.44 
 
 
 
 0.96 
 
 "iroo 
 
 1.43 
 
 98.90 
 
 Tf) 
 
 22. 67 
 
 24.55) 
 3.1C 
 4.61 
 none 
 2.47 
 6.61 
 4.00 
 
 6.89 
 8.62 
 
 99.93 
 
 126 
 197 
 
 6.71 
 14.46 
 42.20 
 10.92 
 15.78 
 19.74 
 
 18.45 
 »-"'.90 
 21.73 
 23.80 
 23.24 
 22.88 
 14.76 
 15. 6f 
 18.70 
 25. sr 
 17.60 
 23.70 
 17.30 
 16. S2 
 
 1.44 
 3.81 
 19.76 
 1.08 
 4.92 
 6.74 
 
 8.25 
 4.62 
 5.49 
 3.61 
 3.60 
 6.48 
 6.24 
 2-.37 
 1.20 
 3.4 
 16.60 
 1.60 
 4.60 
 7.50 
 -3.74 
 6.60 
 3.60 
 7.74 
 6.96 
 2.35 
 4.67 
 5.63 
 4.05 
 4.46 
 4.75 
 4.40 
 0.72 
 0.63 
 2.30 
 1.44 
 0.72 
 1.80 
 1.98 
 0.72 
 
 Tr. 
 0.72 
 5.V6 
 6.92 
 3.02 
 
 3.21 
 0.72 
 
 0.43 
 1.9S 
 0.80 
 0.96 
 1.18 
 1.91 
 
 none 
 1.41 
 1.24 
 1.24 
 1.44 
 1.72 
 1.44 
 2.00 
 1.20 
 0.72 
 1.10 
 1.60 
 1.90 
 1.60 
 0.21 
 2.14 
 1.08 
 1.36 
 2.43 
 0.45 
 1.71 
 1.21 
 1.64 
 1.68 
 0.50 
 0.97 
 0.40 
 1.53 
 Tr. 
 1.61 
 2.02 
 0.08 
 0.14 
 1.80 
 
 1.86 
 1.58 
 2.0O 
 0.26 
 1.05 
 
 1.61 
 0.12 
 
 0.50 
 Tr. 
 0.26 
 none 
 1.70 
 1.67 
 
 0.66 
 Tr. 
 2.60 
 none 
 O.08 
 0.36 
 
 
 
 99.43 
 99,08 
 
 1W 
 
 ■ 
 
 0.49 
 
 
 92.70 
 
 1<)q 
 
 
 1.00 
 
 IliTis 
 
 1.13 
 1.05 
 1.40 
 
 99.10 
 
 130 
 131 
 
 1.20 
 1.88 
 
 0.80 
 3.10 
 4.66 
 
 'e'io 
 
 
 
 9.71 
 0.25 
 
 none 
 0.90 
 0.33 
 3.37 
 
 99.84 
 100.30 
 
 13? 
 
 IS. on 
 
 99.68 
 
 13' 
 134 
 135 
 1% 
 
 0.67 
 
 0.32 
 
 0.50 
 
 1.65 
 
 Tr. 
 
 0.85 
 
 0.77 
 
 Tr. 
 
 0.94 
 
 1.50 
 
 1.40 
 
 Tr. 
 
 0.61 
 
 0.18 
 
 0.21 
 
 2.00 
 
 0.05 
 
 1.60 
 
 0.87 
 
 1.60 
 
 0.82 
 
 Tr. 
 
 2.20 
 
 3.60 
 
 6.'>4 
 6.83 
 6.00 
 
 2.79 
 
 s.oo 
 "Tie 
 
 2.00 
 
 100.60 
 99.06 
 99.81 
 99.09 
 
 137 
 
 ■ 
 
 
 1.75 7.n« 
 
 99.90 
 
 138 
 139 
 140 
 141 
 142 
 143 
 144 
 14!;|l 
 
 ----- 
 
 "7720 
 
 l.OO 
 1.20 
 l.OO 
 1.87 
 1.60 
 1.60 
 
 Tr. 
 
 0.70 
 1.22 
 
 6.90 
 5.0O 
 6.10 
 10.00 
 .7.70 
 11.10 
 4.90 
 12.72 
 6.82 
 6.02 
 4.85 
 1.59 
 2.63 
 0.58 
 0.80 
 
 99.01 
 99.84 
 100.20 
 100.34 
 98.60 
 99.80 
 100.60 
 
 14^! 
 
 62.36 22.63 
 
 1.44 
 1.38 
 1.20 
 1.26 
 1.64 
 0.96 
 1.76 
 0.70 
 Tr. 
 2.71 
 none 
 1.18 
 1.33 
 0.10 
 0.66 
 Tr. 
 Tr. 
 0.47 
 0.43 
 0.29 
 
 1.73 
 0.77 
 1.60 
 0.20 
 0.51 
 0.15 
 ■0.06 
 0.80 
 0.08 
 1.24 
 none 
 0.99 
 0.25 
 0.16 
 0.54 
 0.23 
 0.27 
 Tr. 
 O.OO 
 0.66 
 
 
 
 1.34 
 14.37 
 9.25 
 6.48 
 8.91 
 7.59 
 2.10 
 
 _i 
 
 "Tdo 
 
 100.26 
 
 147 
 148 
 149 
 150 
 151 
 162 
 15'! 
 
 49.60 
 47.92 
 49.06 
 56.54 
 75.15 
 68.73 
 6S.66 
 68.75 
 64.52 
 68.07 
 69.50 
 68.60 
 73.00 
 83.80 
 73.16 
 74.82 
 87.05 
 41:20 
 76.41 
 
 57.78 
 76.00 
 69.34 
 73.06 
 68.50 
 
 B8.50 
 68.66 
 
 16.08 
 14.40 
 10.90 
 16.72 
 13.76 
 20.71 
 12.97 
 15.81 
 17.72 
 19.43 
 13.00 
 20.47 
 15.79 
 9.23 
 13.86 
 13.61 
 8.13 
 6.50 
 12.49 
 
 17.11 
 11.36 
 15.71 
 9.88 
 18.41 
 
 18.39 
 18.53 
 
 6.94 
 9.50 
 none 
 none 
 none 
 none 
 7.41 
 
 ----- 
 
 1.12 
 1.44 
 0.22 
 0.28 
 0.45 
 0.44 
 0.57 
 
 none 
 0.J5 
 0.63 
 
 99.39 
 100.85 
 100.39 
 ^.97 
 99.93 
 99.82 
 99.97 
 
 164 
 
 1B6 
 
 1lifi 
 
 0.60 
 1.30 
 1.47 
 
 "iris 
 
 0.43 
 0.87 
 0.70 
 0.39 
 0.47 
 0.43 
 0.19 
 
 none 
 
 Tr. 
 1.83 
 1.00 
 1.31 
 
 0.43 
 
 4.07 
 5.44 
 6,90 
 
 6.26 
 5.76 
 3.10 
 5.15 
 5.67 
 2.64 
 2.28 
 6.93 
 
 19.85 
 6.20 
 7.02 
 6.64 
 6.20 
 
 97.70 
 99:24 
 99.09 
 
 167 
 158 
 1S9 
 IflO 
 
 1.93 
 
 
 100.37 
 99.16 
 98.69 
 
 100.40 
 
 161 
 162 
 163 
 164 
 166 
 
 22Ti2 
 20.63 
 
 
 
 99.29 
 98.19 
 99.82 
 99.27 
 99.21 
 
 166 
 
 1. 
 
 n 
 
 100.42 
 99.26 
 
 100.18 
 99.87 
 
 100.57 
 
 167 
 16S 
 169 
 
 0.58 
 0.56 
 Tr. 
 0.47 
 
 2.70 
 2.27 
 
 0.86 
 1.44 
 0.12 
 0.91 
 
 4.93 
 2.72 
 
 'i'm 
 
 
 0.31 
 
 170 
 
 == 
 
 z 
 
 Tr. 
 
 171 
 172 
 
 8.^ 
 7.mt 
 
 99.88 
 100.9S 
 
 
 
 
 
 
 *4.60 eombinefl water, 2.0O Hygroscopic. 
 t2.,TO comh'nerl water, 6.00 Hygroscopic. 
 t7.26 combined and 17.30 Hygroscopic. 
 11.66 soluble In water 
 
Chemical Analyses of Texas Kocks and Minerals 173 
 
 IV. OLAT, SHALE AND MARL.— Continued 
 
 c 
 
 M 
 
 o 
 
 6 
 
 3 
 
 to 
 
 O 
 c 
 
 o 
 
 09 
 D 
 
 
 
 1 
 
 
 
 
 
 
 
 
 
 
 
 02 
 
 
 
 
 
 M 
 
 
 03 
 
 
 178 
 
 40.69 
 
 12.68 
 19.33 
 3.23 
 7.20 
 11.72 
 17.90 
 
 21.83 
 
 5.62 
 
 17.77 
 
 14.11 
 
 16.22 
 
 3.90 
 2.47 
 1.26 
 2.26 
 3.38 
 4.50 
 
 1.57 
 
 4.75 
 
 . 2.83 
 
 4.03 
 
 4.08 
 
 
 18.12 
 Tr. 
 
 41.30 
 0.78 
 3.66 
 9.60 
 
 0.92 
 0.50 
 0.42 
 0.45 
 1.34 
 1.88 
 
 1. 11 
 
 
 
 
 none 
 none 
 
 22.65 
 none 
 2.42 
 3.58 
 3.44 
 4.68 
 
 5.60 
 2.44 
 
 — 
 
 100.00 
 
 174 72.30 
 175' 18.62 
 
 4. 
 
 44 
 
 32I6O 
 
 
 
 
 99.04 
 99.75 
 
 176 8.ii.41 
 
 Tr. 
 Tr. 
 none 
 
 2. 
 0.16 
 
 2.76 
 
 0.12 
 9.19 
 Tr. 
 
 00 
 0.45 
 3.02 
 
 
 
 0.66 
 0.87 
 1.05 
 
 98.46 
 
 177 
 178 
 
 72.45 
 49.40 
 
 68.90 
 83.90 
 73.11 
 74.16 
 
 68.35 
 
 '9I55 
 
 
 
 
 
 97.(» 
 98.3S 
 
 99.90 
 
 180 
 IRl 
 
 
 0.40 
 0.40 
 
 1.32 
 0.28 
 
 
 
 
 1.67 
 
 100.60 
 100.17 
 
 im 
 
 
 
 
 
 
 
 
 
 
 
 1.08 
 
 2. 
 8.20 
 
 1.24 
 0.96 
 
 
 
 
 
 
 8.00 
 
 
 
 TH 
 
 20 
 2.90 
 6.16 
 4.08 
 
 §1.00 
 4.00 
 2.65 
 0.68 
 4.44 
 1.27 
 0.10 
 0,33 
 1.12 
 0.12 
 
 Tr. 
 2.30 
 
 5.35 
 0.60 
 2.09 
 0.64 
 
 "ilis 
 
 0.65 
 none 
 
 99.93 
 
 I'M 
 
 
 
 
 
 
 
 
 IR^i 
 
 71.00 
 65.90 
 82.10 
 68.90 
 75.30 
 71.11 
 72.30 
 61.90 
 62.12 
 69. 8S 
 74.04 
 77.29 
 
 68.66 
 69.20 
 
 70.80 
 74.03 
 69.,36 
 77.70 
 
 42.40 
 • 29.12 
 79.00 
 '77.97 
 41.40 
 67.00 
 64.20 
 81.60 
 67.20 
 77 J" 
 70.82 
 62.40 
 76.00 
 
 68.20 
 51.22 
 72.36 
 71.40 
 67.60 
 67.20 
 51.12 
 67.00 
 77.00 
 64.00 
 67.40 
 69.33 
 72.90 
 76.33 
 55.28 
 
 20.20 
 18.43 
 14.24 
 21.83 
 13.87 
 17.86 
 19.33 
 23.70 
 25.11 
 20.47 
 15.15 
 16.29 
 
 26.00 
 21. OS 
 
 18.56 
 17.10 
 14.67 
 10.37 
 
 19.82 
 14.30 
 11.38 
 11.04 
 
 8.60 
 17.61 
 20.13 
 
 6.43 
 12.48 
 1- 70 
 18.90 
 20.66 
 
 9.45 
 
 23.97 
 20.34 
 7.84 
 8.20 
 19.34 
 13.50 
 11.04 
 19.68 
 15.87 
 22.59 
 28.84 
 19.38 
 14.70 
 14.73 
 21.27 
 
 2.20 
 3.77 
 1.66 
 1.57 
 2.53 
 0.28 
 2.47 
 5.50 
 0.30 
 0.21 
 0.60 
 1.69 
 
 Tr. 
 
 1.87 
 
 1.04 
 0.67 
 4.46 
 9.33 
 
 15.48 
 42.10 
 2.44 
 3.19 
 3.57 
 S.67 
 1.87 
 3.60 
 3.62 
 0.70 
 0.40 
 8.64 
 4.75 
 
 4.43 
 6.82 
 
 1.72 
 2.30 
 6.14 
 
 ""4?io 
 
 0.72 
 1.28 
 1.22 
 0.72 
 1.07 
 4.60 
 1.10 
 8.37 
 
 mil 
 
 Tr. 
 
 0.60 
 
 1.15 
 
 Tr. 
 0.30 
 
 
 
 
 
 
 
 100.80 
 
 186 
 
 
 
 
 
 6.36 
 
 " . 
 
 100.39 
 
 1HV 
 
 
 
 
 
 
 iSH 
 
 
 6.60 
 
 2.62 
 
 0.36 
 
 Tr. 
 
 Tr. 
 
 Tr. 
 
 0.15 
 
 0.42 
 
 Tr. 
 
 Tr. 
 Tr. 
 
 Tr. 
 0.30 
 1.65 
 0.24 
 
 "ol62 
 0.35 
 none 
 
 
 
 
 
 
 
 
 IfW 
 
 III" 
 
 1.90 
 
 0.06 
 
 Tr. 
 
 Tr. 
 
 0.33 
 
 0.50 
 
 0.50 
 
 0.33 
 
 Tr. 
 Tr. 
 
 Tr. 
 0.10 
 0.28 
 1.70 
 
 6.66 
 11.21 
 0.60 
 0.84 
 6.80 
 l-r. 
 0.34 
 1.30 
 6.78 
 
 Tr." 
 0.40 
 Tr. 
 
 '7I94 
 6.48 
 6.34 
 1.23 
 2.00 
 
 14.24 
 0.62 
 1.10 
 0.88 
 0.10 
 0.87 
 0.60 
 0.05 
 3.90 
 
 1.23 
 0.41 
 0.60 
 1.11 
 0.21 
 0.30 
 0.27 
 Tr. 
 
 0.11 
 0.94 
 
 1.68 
 ».22 
 1.74 
 Tr. 
 
 0.44 
 0.72 
 0.20 
 0.38 
 
 
 
 
 
 
 
 100.10 
 
 190 
 191 
 
 
 
 
 1.45 
 
 6.31 
 
 
 
 98.60 
 99.04 
 
 192 
 l<f3 
 
 
 6.62 
 
 
 "llii 
 
 1.40 
 1.31 
 1.18 
 
 'ioloo 
 
 6.68 
 6.00 
 4.75 
 
 6.62 
 
 100.00 
 
 194 
 195 
 196 
 
 
 
 
 98.92 
 
 99.31 
 
 100.66 
 
 197 
 
 6. 00 
 
 6.16 
 
 100.66 
 
 ■m 
 
 
 
 
 
 100.00 
 
 
 
 
 
 "i.m 
 
 1.13 
 
 
 i%9 
 200 
 201 
 
 2. 
 6.15 
 3.64 
 
 60 
 0.96 
 
 99.93 
 
 10O.4S 
 
 99.88 
 
 99.78 
 
 
 5.26 
 
 'ol58 
 
 0.11 
 
 'olei 
 3.75 
 
 0.63 
 1.80 
 
 'ili7 
 
 "ol78 
 1.23 
 
 
 
 
 203 
 204 
 
 2oe 
 
 206 
 •W7 
 
 9. 
 6.10 
 3.80 
 3.24 
 
 84 
 
 100.01 
 106.33 
 99.00 
 98.40 
 
 WP 
 
 1.32 
 1.62 
 0.25 
 0.26 
 
 TrV 
 Tr. 
 none 
 
 Trl" 
 2.23 
 2.44 
 2.01 
 
 "6I96 
 1.06 
 0.37 
 1.15 
 0.10 
 0.86 
 0.30 
 1.61 
 0.28 
 
 0.68 
 0.69 
 0.49 
 
 TrV 
 1.12 
 2.00 
 
 1.67 
 1.78 
 1.66 
 
 O.50 
 7.77 
 4.00 
 
 
 
 2.10 
 2.00 
 0.87 
 
 "a'm 
 
 2.10 
 
 5.20 
 5.32 
 4.00 
 
 ^ 70 
 6.80 
 
 1.03 
 1.00 
 
 "4I96 
 
 100.73 
 
 209 
 210 
 211 
 
 01") 
 
 Tr. 
 
 'ilei 
 
 
 100.75 
 99.00 
 99.90 
 
 100.20 
 
 218 
 
 214 
 
 
 
 
 99.62 
 100.89 
 
 215 
 
 II23 
 
 3.30 
 S.25 
 
 lies 
 
 10.62 
 
 "0I02 
 
 none 
 "0I7B 
 
 none 
 
 "olii 
 
 0.14 
 
 4.70 
 
 6.36 
 1.05 
 3.72 
 3.70 
 1.70 
 
 ""7I69 
 13.26 
 
 "ilis 
 
 100.90 
 
 216 
 217 
 218 
 219 
 220 
 Wl 
 
 7. 
 
 0. 
 1.20 
 1.22 
 2.02 
 1.16 
 0.40 
 Tr. 
 none 
 Tr. 
 Tr. 
 Tr. 
 1.60 
 0.64 
 none 
 
 11 
 
 14 
 1.70 
 1.60 
 2.73 
 0.11 
 1.69 
 0.18 
 
 none 
 0.06 
 0.47 
 0.12 
 0.70 
 0.10 
 Tr. 
 
 99.07 
 93.56 
 100.67 
 100.59 
 99.86 
 99.72 
 
 222 
 223 
 224 
 225 
 
 0.95 
 
 1.82 
 .87 
 1.61 
 1.48 
 1.40 
 1.00 
 1.27 
 1.05 
 
 4.00 
 6.07 
 4.60 
 6.80 
 10.44 
 6.46 
 4.20 
 4.60 
 4.26 
 
 98.97 
 97.15 
 100.97 
 97.21 
 99.66 
 
 227 
 228 
 229 
 230 
 
 "siso 
 
 
 
 98.49 
 99.50 
 99.S0 
 99.14 
 
 i as Oblorldes. 
 •Silver .66 oz. per ton; 
 
 copper 11.8 per cent. 
 
174 
 
 University of Texas Bulletin 
 
 IV. OLAT, SHALE AND MARL.— Continued 
 
 
 
 
 O 
 
 
 
 « 
 
 m 
 
 231 
 
 46.60 
 
 232 
 
 82.80 
 
 233 
 
 72.0C 
 
 2S4 
 
 57.80 
 
 2S5 
 
 79.00 
 
 236 
 
 83.40 
 
 237 
 
 73.60 
 
 23S 
 
 79.20 
 
 238 
 
 56.25 
 
 240 
 
 70.00 
 
 241 
 
 68.34 
 
 242 
 
 78.50 
 
 243 
 
 83.60 
 
 244 
 
 83.00 
 
 245 
 
 64.40 
 
 24fi 
 
 7.40 
 
 247 
 
 73.00 
 
 248 
 
 62.00 
 
 '249 
 
 n.26 
 
 250a 
 
 fi».gO 
 
 2S0b 
 
 74.04 
 
 2S1 
 
 62.70 
 
 252 
 
 64.00 
 
 253 
 
 85.40 
 
 254 
 
 78.22 
 
 256 
 
 50.20 
 
 256 
 
 58.48 
 
 257 
 
 36.08 
 
 25R 
 
 26.18 
 
 258 
 
 17.81 
 
 260 
 
 17.66 
 
 2fi1 
 
 16.30 
 
 262 
 
 36.28 
 
 263 
 
 51.01 
 
 264 
 
 40.38 
 
 265 
 
 41.20 
 
 266 
 
 42.56 
 
 267 
 
 40.86 
 
 268 
 
 38.42 
 
 269 
 
 37.64 
 
 270 
 
 42.10 
 
 271 
 
 29.48 
 
 272 
 
 32.91 
 
 273 
 
 42.09 
 
 274 
 
 40.70 
 
 276 
 
 41.63 
 
 276 
 
 90.00 
 
 277 
 
 68.11 
 
 278 
 
 50.66 
 
 279 
 
 75.29 
 
 280 
 
 61.30 
 
 28] 
 
 C7.18 
 
 282 
 
 61.56 
 
 2S3 
 
 60.41 
 
 284 
 
 69.03 
 
 '286 
 
 63.00 
 
 286 
 
 63.43 
 
 287 
 
 57.00 
 
 288 
 
 58.22 
 
 289 
 
 66.92 
 
 290 
 
 63.66 
 
 291 
 
 65.07 
 
 U ^1 
 
 8^ 
 
 0.43 
 
 o.'ga 
 
 11.82 
 
 18.94 
 
 5.54 
 
 6.45 
 
 2.77 
 
 3.38 
 
 7.55 
 
 5 
 
 4.40 
 
 6.12 
 19.80 
 18.60 
 16.2S 
 10.50 
 
 S.51 
 
 7.42 
 24.17 
 55.00 
 
 6.91 
 12.12 
 18.58 
 15.85 
 
 7.60 
 17.97 
 
 24.17 
 10.02 
 8.71 
 20.90 
 18.23 
 18.64 
 9.66 
 6.10 
 7.60 
 6.97 
 13.60 
 18.23 
 18.69 
 16.12 
 15.34 
 14.92 
 16.95 
 13.80 
 15.90 
 12.26 
 13.42 
 17.73 
 15.59 
 16.66 
 4.60 
 
 2.51 
 
 4.60 
 
 4.50 
 
 3.44 
 
 S.60 
 
 1.40 
 
 0.36 
 
 3.23 
 
 4.40 
 
 5 
 
 5.08 
 
 1.62 
 
 1.1 
 
 4.16 
 
 6.94 
 
 3.23 
 2.18 
 0.72 
 5.10 
 7.64 
 4.14 
 3.55 
 2.04 
 1.76 
 1.65 
 1.44 
 3.61 
 3.62 
 3.41 
 5.28 
 6.10 
 5.07 
 6.00 
 3.36 
 2.69 
 2.69 
 2.46 
 3.24 
 3.67 
 1.44 
 
 Tr 
 Tr 
 Tr 
 Tr 
 Tr 
 Tr 
 
 0.73 
 
 Tr 
 
 1.20 
 
 0.45 
 
 1.00 
 
 Tr. 
 
 Tr. 
 
 6.58 
 
 Tr. 
 
 ace 
 ace 
 ace 
 ace 
 ace 
 ace 
 ace 
 4.61 
 Tr 
 0.88 
 0.23 
 1.08 
 3.01 
 Tr, 
 8.28 
 0.50 
 
 1.62 
 
 2.57 
 
 1.05 
 
 0.66 
 
 l.SS 
 
 2.33 
 
 1.33 
 
 2.21 
 
 Tr. 
 
 2-47 
 
 0.90 
 
 0.60 
 
 0.30 
 
 2Ti7 
 2.62 
 
 20. 08 
 
 oo.oo 
 
 23. S3 
 
 0.00 
 
 0.00 
 
 14.40 
 
 6.20 
 
 13.96 
 
 1.25 
 
 19.25 
 
 1.65 
 
 22.43 
 
 1.90 
 
 11.19 
 
 2.77 
 
 23.00 
 
 2.50 
 
 23.42 
 
 1.16 
 
 22.20 
 
 2.10 
 
 21.10 
 
 1.85 
 
 10.67 
 
 1.94 
 
 8.18 
 
 4.32 
 
 9.16 
 
 2.80 
 
 
 
 Tr. 
 3.40 
 4.37 
 0.92 
 
 Tr. 
 0.10 
 3.36 
 8.93 
 1.24 
 17.39 
 28 16 
 34.76 
 32.69 
 36.03 
 16.42 
 8.87 
 9.74 
 
 0.60 
 0.53 
 
 Tr 
 
 none 
 1.10 
 
 0.50 
 0.79 
 1 
 
 3.84 
 5.66 
 5.62 
 6.38 
 3.87 
 4.76 
 6.09 
 1.73 
 0.90 
 3.56 
 0.40 
 1.50 
 1.26 
 3.50 
 5.26 
 2.60 
 
 5.70 
 9.01 
 4.50 
 
 87.83 
 
 10O.S6, 
 101.08 
 
 99.97 
 100.74 
 
 99.45 
 
 4.17 
 
 1.31 
 0.60 
 0.62 
 0.32 
 1.05 
 0.70 
 
 0.73 
 
 4.70 
 4.78 
 6.10 
 4.70 
 4.22 
 2.40 
 3.70 
 7.25 
 13.50 
 9.0O 
 
 0.91 
 
 100.16 
 100.00 
 100.70 
 100.38 
 .12 
 100.94 
 99.75 
 
 99.72 
 100.22 
 
 4.00 
 1.05 
 0.66 
 0.86 
 
 0.17 
 0.44 
 
 (.'.17 
 
 S, 
 
 Tr 
 
 0.46 
 
 0.01 
 
 0.07 
 
 0.02 
 
 0.02 
 
 0.02 
 
 0.01 
 
 0.02 
 
 0.03 
 
 0.0516. 
 
 0.0414.26 
 
 0.04 
 0.02 
 0.06 
 0.07 
 0.12 
 0.12 
 0.01 
 0.07 
 0.07 
 
 14.81 
 14.86 
 17.18 
 15.33 
 26.32 
 23.61 
 14.24 
 16.41 
 15.68 
 0.10 
 
 3.83 
 1.74 
 1.28 
 1.27 
 1.28 
 1.29 
 3.83 
 1.54 
 3.10 
 1.26 
 1.01 
 0.70 
 0.83 
 0.79 
 0.36 
 0.82 
 0.97 
 0.98 
 0.71 
 0.98 
 0.10 
 
 00.00 
 0.00 
 10.30 
 
 1.94 
 
 1.10 
 0.44 
 
 12.16 
 Tr. 
 0.46 
 
 0,25 
 1.08 
 9.33 
 10.00 
 8.44 
 
 00.00 
 0.00 
 Tr. 
 
 0.79 
 0.61 
 0.80 
 1.10 
 1.23 
 
 Tr, 
 
 0.10 
 
 1.23 
 
 0.15 
 
 0.21 
 
 1.15 
 1.49 
 1.06 
 0.60 
 1.74 
 1.78 
 0.64 
 2.16 
 0.77 
 1.44 
 1.21 
 1.48 
 1.64 
 1.28 
 2.03 
 l.Sl 
 1.73 
 0.8S 
 1.97 
 1.6( 
 Tr. 
 
 2.63 
 2.63 
 2.93 
 Tr. 
 
 50 
 ace 
 1.17 
 
 2.88 
 0.19 
 0.12 
 1.60 
 0.40 
 0.30 
 0.22 
 0.08 
 0.70 
 0.24 
 0.57 
 0.22 
 l.Oi 
 0.72 
 0.23 
 0.16 
 0.15 
 1.05 
 0.38 
 0.20 
 Tr 
 
 2.18 
 2.22 
 0.30 
 4.10 
 
 7.02 
 
 1.43 2.77 
 
 1 
 0.45 
 Tr. 
 1.70 
 0.07 
 
 Tr. 
 0.05 
 
 Tr. 
 0.60 
 
 0.24 
 0.18 
 0.30 
 0.26 
 
 0.21 
 0.18 
 
 1.00 
 1.66 
 
 1.8 
 
 T.m 
 1 
 
 0.92 
 1.08 
 0.89 
 0.16 
 1.03 
 0.27 
 0.28 
 0.47 
 0.86 
 0.39 
 0.48 
 0.82 
 0.07 
 0.92 
 1.06 
 0.81 
 0.74 
 
 0.17 
 
 5.50 
 6.7: 
 9.10 
 8.05 
 
 7.25 
 
 1 
 
 5.60 
 
 1.05 
 
 00.00 
 0.00 
 
 OO.OO 
 O.OO 
 
 9.60 
 
 7.66 
 7.3f 
 0.92 
 
 0.70 
 
 6.46 
 3.09 
 2.65 
 1.81 
 1. 
 
 i.a 
 
 7.52 
 2.72 
 8.21 
 
 2.: 
 
 2.25 
 
 1.72 
 
 2.69 
 
 2.56 
 
 2.67 
 
 2.17 
 
 1.70 
 
 1.96 
 
 2.21 
 
 2.97 
 
 3.04 
 
 00.00 
 
 6.08 
 
 16.77 
 26.66 
 32.96 
 34.08 
 36.03 
 20.07 
 11.04 
 14.63 
 17.60 
 17.29 
 18.66 
 18.59 
 19.86 
 17.37 
 24.61 
 21.97 
 17.82 
 18.17 
 17.00 
 
 99.62 
 100.79 
 100.25 
 
 102.15 
 99.65 
 99.40 
 100.11 
 99.86 
 100.18 
 1W.38 
 99.78 
 99.93 
 99.91 
 100.19 
 100.21 
 100.15 
 100.18 
 100.28 
 100.27 
 100.40 
 100.37 
 100.18 
 100.30 
 100.20 
 100.28 
 100.26 
 100.06 
 
 92.99 
 
 4.90 
 
 10. oe 
 
 1.30 
 1.05 
 1.30 
 1.13 
 
 1.31 
 1.48 
 0.90 
 0.95 
 1.05 
 
 13.79 
 6.00 
 2.10 
 
 6.50 
 
 Tio 
 
 16.65 
 14. 42 
 
 2.65 .... 
 
 4.16 .... 
 
 3.72 .... 
 
 99.60 
 
 99.96 
 
 100.00 
 100.28 
 98.88 
 97.70 
 98.54 
 
 99.72 
 
 98.48 
 
 100.20 
 
 99.68 
 
Chemical Analyses of Texas Rocks and Minerals 175 
 
 
 
 
 IV 
 
 . CLAY, 
 
 SHALE AND 
 
 MARL.— Continued 
 
 
 
 
 
 O 
 
 S 
 
 p 
 
 O 
 
 o 
 
 O 
 
 O 
 
 O 
 
 
 6 
 
 
 O 
 
 o 
 
 ^1 
 
 rt 
 
 z, 
 
 m 
 
 5 
 
 s 
 
 o 
 
 S 
 
 M 
 
 S 
 
 o 
 o 
 
 S 
 
 O 
 
 P 
 
 a 
 
 5^ 
 
 ^ 
 
 «2 
 
 15.98 
 
 \ 
 8. 
 
 47 
 
 
 38.86 
 
 
 0.15 
 
 2.84 
 
 31.74 
 
 O.lflfi 
 
 0.83 
 
 
 1.10 
 
 
 
 293 
 
 60.82 
 
 16.05 
 
 5.26 
 
 
 3.66 
 
 
 1.75 
 
 2.94 
 
 2.85 
 
 0.187 
 
 1.06 
 
 
 5.35 
 
 
 99.917 
 
 2S4 
 
 45.02 
 
 16.17 
 
 4.78 
 
 
 
 14.26 
 
 none 
 
 0.976 
 
 3.22 
 
 10.36 
 
 0.113 
 
 0.97 
 
 
 4.36 
 
 
 100.2S 
 
 !!95 
 
 48.72 
 
 16.10 
 
 4.87 
 
 
 11.79 
 
 Tr. 
 
 1.14 
 
 3.07 
 
 S..30 
 
 0.109 
 
 2.21 
 
 
 3.68 
 
 
 99.99 
 
 298 
 
 28.34 
 
 7.60 
 
 3.92 
 
 
 29.76 
 
 none 
 
 0.29 
 
 2.04 
 
 n.m 
 
 O.llfl 
 
 1.04 
 
 
 8.77 
 
 
 99.58 
 
 Vffr 
 
 37.45 
 21.72 
 
 73.15 
 
 7.72 
 7.97 
 
 20.46 
 
 2.02 
 2.23 
 
 Tr. 
 
 
 
 27.92 
 36.54 
 
 none 
 
 0.36 
 0.95 
 
 Tr. 
 
 
 
 21.80 
 28.44 
 
 
 
 Tr. 
 0.52 
 
 2.40 
 2.06 
 
 
 99.67 
 
 298 
 
 Tr. 
 Tr. 
 
 Tr. 
 Tr. 
 
 
 Tr. 
 
 99.73 
 
 289 
 
 6.37 
 
 99.98 
 
 300 
 
 68.84 
 
 21.15 
 
 1.15 
 
 
 Tr. 
 
 Tr. 
 
 0.46 
 
 1.12 
 
 
 
 
 
 1.22 
 
 6.62 
 
 
 
 100.55 
 
 SOI 
 
 70.50 
 
 18.30 
 
 1.80 
 
 
 Tr. 
 
 0.90 
 
 UT. 
 
 0.20 
 
 
 
 
 1.20 
 
 6.6' 
 
 
 98.40 
 
 302 
 
 37.45 
 
 7.72 
 
 2.02 
 
 
 27.92 
 
 0.36 
 
 
 
 21.80 
 
 
 
 
 2.40 
 
 
 99.67 
 
 S«i 
 
 59.20 
 
 20.60 
 
 6.90 
 
 
 1.08 
 
 1.62 
 
 1.60 
 
 1.84 
 
 
 
 
 
 1.60 
 
 4.66 
 
 0.20 
 
 99.20 
 
 304 
 
 56.0] 
 
 24.07 
 
 2.59 
 
 
 Tr. 
 
 1.11 
 
 1.19 
 
 1.44 
 
 
 
 
 1.50 
 
 7.30 
 
 4.04 
 
 99.40 
 
 305 
 
 63.30 
 
 23.40 
 
 1.60 
 
 
 IT. 
 
 0.30 
 
 0.90 
 
 l.OO 
 
 
 
 
 1.20 
 
 7.60 
 
 
 99.30 
 
 308 
 
 71.78 
 
 16.75 
 
 1.11 
 
 
 0.32 
 
 1.17 
 
 0.19 
 
 0.86 
 
 
 
 
 1.16 
 
 5.90 
 
 
 99.23 
 
 SW 
 
 67.65 
 
 20.60 
 
 1.20 
 
 
 Tl-. 
 
 0.25 
 
 1.06 
 
 0..60 
 
 
 
 
 1.30 
 
 6.60 
 
 
 99.08 
 
 308 
 
 60.90 
 
 20.95 
 
 5.30 
 
 
 0.05 
 
 0.25 
 
 1.S6 
 
 1.40 
 
 
 
 
 0.80 
 
 6.30 
 
 
 100.50 
 
 309 
 
 63.30 
 
 24.60 
 
 1.30 
 
 
 0.10 
 
 0.20 
 
 2.30 
 
 1.30 
 
 
 
 
 1.00 
 
 8.70 
 
 
 100.10 
 
 310 
 
 60.50 
 
 19.40 
 
 9.30 
 
 
 
 Tr. 
 
 0.30 
 
 1.40 
 
 ~..m 
 
 
 
 
 0.60 
 
 9.30 
 
 
 99.50 
 
 »11 
 
 54.80 
 
 20.48 
 
 2.22 
 
 
 7.74 
 
 0.80 
 
 
 
 
 6.09 
 
 
 0.65 
 
 
 
 6.71 
 
 99.39 
 
 V. FULLER'S- EARTH 
 
 Sp. 
 Gravitj 
 
 S12 
 313 
 S14 
 S15 
 316 
 317 
 318 
 
 319. 
 
 1.067 
 1.2.93 
 1.058 
 1.007 
 1.156 
 1.047 
 0.9296 
 
 Wt. lbs. 
 per cu. It. 
 
 77 
 
 66.1 
 
 62.90 
 
 72.20 
 
 66.40 
 
 58.00 
 
 77 
 
 Acidity 
 
 2.44% 
 2.40% 
 2.16% 
 2.92% 
 2.30% 
 3.01% 
 2.00% 
 
 Loss on 
 drying 220° P 
 
 4.10% 
 4.45% 
 2.96% 
 2.51% 
 12.74% 
 4.64% 
 1.8 
 
 10.0% 
 
 Loss on 
 ignition 
 
 7.13% 
 6.5S% 
 7.57% 
 6.56% 
 10.30% 
 25.54% 
 4, 
 
 Color ol 
 orig. oij 
 
 In Lov 
 
 No. i 
 No. 4 
 No. 4 
 No. 4 
 No. 4 
 No. 4 
 No. 4 
 (" Bleaching power equal to 
 that ol best English 
 fuller's earth. 
 
 Color of 
 lilt, oil 
 
 eland's T 
 
 ^^its 
 
 No. 2 
 
 No. 2% 
 
 No. S% 
 
 No. 3 
 
 No. 2% 
 
 No. 3 
 
 No. 3% 
 
 Decrease 
 of color 
 
 50 
 
 37% 
 
 12% 
 
 26 
 
 S7% 
 
 2S 
 
 12% 
 
 YI. LIMESTONE 
 
 (a) Cambrian 
 
 No. 
 
 Mois. 
 
 Silica 
 
 AI2O3 
 
 FesOa 
 
 CaO 
 
 MgO 
 
 Kz 
 
 NaaO 
 
 319 
 
 
 67.7* 
 
 15.5 
 
 4.4 
 
 1.15 
 
 0.75 
 
 1.4 
 
 0.7 
 
 746 
 
 
 0.60 
 
 0.69 
 
 1.21 
 
 48.78 
 
 3.84 
 
 
 
 
 C O2 S O3 
 
 P20S 
 
 Manganese oxide 
 
 calcium sulphate 
 
 0.3 
 
 42.51I none 
 
 Loss 
 
 on 
 
 Igni. 
 
 Com- 
 bined 
 water 
 7.15 
 1.79 
 
 Total 
 
 *42% as free sand. 
 
 100.05 
 
176 
 
 University of Texas Bulletin 
 (h) Ordovician 
 
 No. 
 
 Mols. 
 
 Silica 
 
 AUOa 
 
 F02O3 
 
 CaO 
 
 Mg 
 
 E2 
 
 Na=0 
 
 OOa 
 
 SO3 
 
 P2OB 
 
 Loss 
 
 on 
 
 Ignl. 
 
 Total 
 
 747 
 74? 
 749 
 
 ------ 
 
 0.94 
 1.98 
 4.30 
 3.40 
 4.50 
 1.84 
 2.60 
 
 3.06 
 5.68 
 8.48 
 4.19 
 0.40 
 0.10 
 0.92 
 
 1.53 
 1.62 
 1.82 
 0.91 
 0.60 
 0.60 
 1.22 
 
 46.91 
 46.64 
 27.03 
 28.36 
 49.29 
 53.36 
 49.11 
 
 2.90 
 0.20 
 
 14 99 
 
 
 
 
 
 40.50 
 41.20 
 41.70 
 41.20 
 41.49 
 41.93 
 38.69 
 
 none 
 none 
 none 
 none 
 
 
 
 3.46 
 2.60 
 2.60 
 5.14 
 0.41 
 1.27 
 3.91 
 
 99.31 
 99.72 
 100.92 
 
 750 
 
 16.98 
 3.15 
 
 none 
 0.51 
 
 
 
 100.18 
 
 751 
 
 
 
 99 94 
 
 7S2 
 
 
 
 99.10 
 
 753 
 
 
 
 2.74 
 
 
 99.60 
 
 (c) Pen^nsylvanian 
 
 754 
 
 765 
 758 
 767 
 758 
 759 
 760 
 761 
 762 
 
 763 
 764 
 765 
 766, 
 767 
 768 
 769 
 770 
 
 771 
 772 
 773 
 774 
 775 
 
 
 
 43.10 
 
 6.65 
 
 3.32 
 
 0.75 
 
 0.23 
 
 1.22 
 
 1.20 
 
 none 
 
 1.90 
 
 3.10 
 
 0.76 
 
 1.66 
 
 0.90 
 
 0.86 
 
 0.64 
 
 6.06 
 
 1.81 
 
 2.73 
 
 2.08 
 
 
 1.54 
 
 3.66i 
 
 
 3.46 
 
 0.40 
 
 0.05 
 
 2.67 
 
 1.11 
 
 0. 97 
 
 0.40 
 
 2. 29 
 
 0.74 
 
 0.16 
 
 0.94 
 
 0.60 
 
 0.44 
 
 0.78 
 
 18.00 
 
 1.72 
 
 2.28 
 
 0.80 
 
 none 
 
 1.05 
 
 3.14 
 
 none 
 
 l.«> 
 
 6.18 
 
 0.50 
 
 liSO 
 
 0.20 
 
 0.90 
 
 1.00 
 
 0.70 
 
 0,34 
 
 0.50 
 
 
 0.68 
 
 5.60 
 
 0.56 
 
 0.61 
 
 0.68 
 
 0.39 
 
 14.18 
 
 22.26 1.12 
 53.26 none 
 
 64.00 
 49.72 
 52.36 
 46.20 
 51.81 
 61.40 
 51.06 
 
 54.50 
 53.37 
 53.19 
 51.25 
 43.46 
 52.50 
 48.93 
 48.26 
 
 54.50 
 53.75 
 64.48 
 51.17 
 30.29 
 
 none 
 1.11 
 
 0.57 
 
 0.48 
 
 none 
 
 0.23 
 
 0.04 
 1.32 
 
 Trace 
 
 0.69 
 0.83 
 1. 
 
 ■fcace 
 
 12.07 
 
 19.10 
 41.96 
 42.43 
 40.30 
 40.93 
 36.82 
 
 none 
 none 
 0.56 
 0.56 
 0.41 
 
 
 
 5.50 
 1.95 
 0.97 
 2.20 
 .-3.00 
 4.38 
 3.00 
 
 40.83 
 
 
 
 40.10 
 
 
 
 40.66 
 
 
 
 2.78 
 
 43.00 
 41.63 
 
 
 
 - 
 
 41.68 
 40.25 
 
 Trace 
 
 
 
 2.62 
 4.45 
 2.12 
 4.00 
 4.04 
 3.62 
 
 1.00 
 1.84 
 1.49 
 1.79 
 
 33.64 
 40.10 
 38.96 
 37.90 
 
 42.64 
 
 0.91 
 0.88 
 0.35 
 1.72 
 
 
 42.46 
 
 
 
 42.81 
 
 
 
 40.21 
 
 
 
 41.14 
 
 
 
 
 
 1(10.06 
 99.36 
 
 100.17 
 99.70 
 99.10 
 8S.67 
 99.74 
 98.68 
 97.75 
 
 99.<n. 
 99.33 
 97.75 
 
 100.13 
 99.92 
 97.70 
 
 100.2B 
 
 99.24 
 
 100.09 
 
 99.96 
 
 (d) Permian 
 
 778 
 
 777 
 
 778 
 779 
 
 780 
 781 
 782 
 783 
 784 
 786 
 786 
 787 
 788 
 
 0.60 
 
 0.64 
 Z.90 
 
 1.07 68.82 none 
 
 1.83 47.72 
 
 798* 8.81 12.74 
 
 790 none 7.66 14.' 
 
 31.35 
 62.02 
 
 .34 
 
 60.69 
 58.34 
 61.81 
 54.34 
 52.25 
 49.60 
 52.10 
 50.80 
 
 21.10 
 Trace 
 
 0.06 
 
 no^ 
 none 
 none 
 none 
 
 0.18 
 0.43 
 
 1.12 
 6.69 
 
 0.40 
 
 0.60 
 
 0. 37 
 
 40.30 
 38.46 
 
 40.59 
 
 41.63 
 40.44 
 41.90 
 39.40 
 40.40 
 39.30 
 41.60 
 41.44 
 40.70 
 
 — — S.30 99.46 
 
 3.94 96.22 
 
 none 
 1.' 
 none 
 
 0.24 
 
 34.75 Trace Tlraee 
 - 33.80 0.65Tlac« 
 
 Trace 
 
 3.00 
 
 3.12 
 2.10 
 3.50 
 3.40 
 3.85 
 3.40 
 
 4.20 
 
 100.62 
 
 99.S4 
 100.09 
 100.04 
 100.30 
 100.84 
 
 99.64 
 1O0I.3O 
 100.27 
 
 99.41 
 
 100.00 
 100.94 
 
 (e) Comanchean Cretaceous 
 
 4.10 
 
 6.55 
 
 1.05 
 
 47.04 
 
 1.10 
 
 1.30 
 
 none 
 
 52.06 
 
 S..^ 
 
 1.35 
 
 1.06 
 
 49.35 
 
 O.-SS 
 
 ..1.65 
 
 0.46 
 
 52.43 
 
 1.40 
 
 0.24 
 
 0.76 
 
 51.92 
 
 0.20 
 
 0.60 
 
 0.90 
 
 64.90 
 
 none 
 
 
 
 0.61 
 
 
 
 0.98 
 
 0.25 
 
 Trace 
 
 none 
 
 ------ 
 
 :-: 
 
 36.96 
 38.60 
 39.10 
 41.20 
 41.36 
 42.90 
 
 none 
 none 
 1.03 
 0.34 
 1.61 
 
 ----- 
 
 5.24 
 B.90 
 3.64 
 2.54 
 2.92 
 1.80 
 
 99.94 
 99.47 
 99.90 
 99.14 
 100.11 
 100.49 
 
 •Oxide of Manganese, S.05 per cent. 
 
Chemical Analyses of Texas Rocks and Minerals 177 
 (e) Comanchean Cretaceous (Continued) 
 
 No. 
 
 Mois. 
 
 Silica 
 
 AbOs 
 
 Fa2 03 
 
 OaO 
 
 Mg 
 
 Ka 
 
 Na^O 
 
 CO2 
 
 S Ox 
 
 P2OB 
 
 Xcss 
 
 on 
 
 Igni. 
 
 Total 
 
 797 
 
 '"oTii 
 
 0.70 
 6.10 
 2. So 
 
 1.26 
 
 1.49 
 S.66 
 68.90 
 0.76 
 
 1.40 
 0.30 
 0.36 
 0.40 
 0.30 
 0.25 
 O.IS 
 2.10 
 0.21 
 0.16 
 0.30 
 1.00 
 1.18 
 0.40 
 0.30 
 0.40 
 O.30 
 0.04 
 
 0.30 
 2.20 
 
 0.63 
 0.70 
 3.22 
 6.60 
 3.60 
 0.14 
 3.]'' 
 1.40 
 1.00 
 
 52.92 
 rracf 
 
 63.18 
 0.84 
 
 0.28 
 1.88 
 0.21 
 
 0.72 
 0.78 
 0.24 
 
 65.05 
 48.69 
 63.90 
 
 52.19 
 51.35 
 60.68 
 11.07 
 49.76 
 
 63.79 
 54.40 
 61.04 
 53.56 
 63.30 
 63.56 
 54.34 
 50.60 
 66.36 
 60.60 
 53.72 
 53.35 
 61.60 
 64.30 
 55.39 
 61.66 
 62.12 
 62.62 
 
 55.39 
 52.28 
 
 65.33 
 53.18 
 
 52.36 
 44.77 
 49.03 
 53.60 
 53.33 
 61.88 
 .53.5.? 
 28.88 
 55.60 
 20.52 
 54.70 
 
 
 
 
 41.90 
 38.20 
 42.23 
 
 Trace 
 
 - 
 
 :::-: 
 
 2.10 
 3.30 
 
 100.76 
 
 793 
 799 
 
 none 
 0.16 
 
 0.605 
 0.818 
 0.844 
 0.42 
 0.S4 
 
 none 
 0.18 
 
 
 
 
 
 93.95 
 99.69 
 
 
 
 
 
 800§ 
 
 0.36 
 
 0.75 
 
 0. 67 
 6.97 3.08 
 0.80 0.86 
 
 
 801t 
 
 am 
 
 803 
 804 
 
 "oTie 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 8.20 
 40.70 
 
 42.36 
 42.76 
 40.20 
 42.08 
 41.88 
 42.08 
 42.70 
 38.80 
 43.17 
 39.68 
 42.21 
 41.92 
 40.00 
 42.70 
 42.ai 
 42.40 
 40.95 
 41.50 
 
 42.61 
 41.08 
 
 43.17 
 43.30 
 
 41.74 
 35.65 
 37.60 
 42.36 
 41.90 
 40.76 
 42.10 
 0.64 
 43.68 
 11.60 
 42.70 
 
 1.01 
 2.06 
 
 0.80 
 none 
 
 ------ 
 
 0.44 
 3.14 
 
 1.24 
 1.15 
 3.76 
 
 i.oe 
 
 2.02 
 2.04 
 1.30 
 B.66 
 1.25 
 7.62 
 1.75 
 1.68 
 3.33 
 1.30 
 
 "iris 
 
 4.05 
 4.00 
 
 "lie 
 "oTS 
 
 99.04 
 98.42 
 
 806 
 806 
 807 
 
 0. 
 
 1.S6 
 
 1.23 
 
 9.00 
 
 none 
 
 none 
 
 none 
 
 0.09 
 
 0.16 
 
 0.33 
 
 none 
 
 none 
 
 3.17 
 
 0.69 
 
 0.16 
 
 0.51 
 
 0.47 
 
 0.01 
 
 60 
 0.75 
 0.53 
 0.40 
 0.20 
 1.10 
 0.10 
 0.61 
 
 Trace 
 0.43 
 1.02 
 1.10 
 0.45 
 0.61 
 0.12 
 0.43 
 0.29 
 0.29 
 
 100.09 
 
 100.70 
 
 97.30 
 
 
 1.26 
 1.25 
 0.55 
 0.55 
 Trace 
 
 -"-- 
 
 98.75 
 
 
 
 
 
 98.9B 
 
 810 
 811 
 
 
 
 
 
 
 99.68 
 99.14 
 
 812 
 813 
 
 ■0.72 
 0.03 
 0.07 
 
 ------ 
 
 
 
 98.48 
 
 100.06 
 
 98.69 
 
 816 
 
 0.14 
 0.66 
 
 — 
 
 99.14 
 
 816 
 
 
 
 
 99.60 
 
 817 
 
 0.22 
 
 
 
 99.86 
 
 818 
 
 
 
 ""6^17 
 0.17 
 0.20 
 
 0.12 
 none 
 
 — 
 
 99.90 
 
 819 
 820 
 821 
 822 
 
 0.11 
 0.32 
 0.54 
 0.48 
 
 0.11 
 
 Trace 
 0.S4 
 1.01 
 none 
 0.41 
 0.65 
 none 
 none 
 none 
 3.77 
 
 
 
 ----- 
 
 98,69 
 98.07 
 98.89 
 99.14 
 
 823 
 
 0. 28 
 _ 1.0J[ 1.76 
 
 0. .■» 
 
 98.69 
 
 824 
 825 
 
 
 
 
 
 100.02 
 99.62 
 
 826 
 
 0. 
 
 0.78 
 
 5.92 
 
 none 
 
 none 
 
 0.43 
 
 0.45 
 
 none 
 
 7.74 
 
 0.60 
 
 2.04 
 
 2.20 
 
 70 
 0.28 
 1.18 
 1.96 
 0.93 
 1.09 
 1.65 
 1.50 
 4.50 
 Trace 
 Trace 
 0.60 
 
 "olii 
 
 none 
 
 98.90 
 
 100.09 
 
 828 
 829 
 830 
 831 
 
 
 6.67 
 6.60 
 1.44 
 1.30 
 2.34 
 2.20 
 
 
 99.79 
 
 99.20 
 
 99.00 
 
 101.19 
 
 83? 
 
 
 
 0.33 
 
 
 98.81 
 
 S)S 
 
 
 
 100.33 
 
 834 
 835 
 
 
 
 
 
 0.30t 
 
 98.75 
 
 100. 'j8 
 
 &3H 
 
 837 
 
 none 
 none 
 
 
 
 
 
 Trace 
 none 
 
 
 
 4.08 
 
 101. S2 
 101.04 
 
 
 
 n nr. 
 
 
178 University of Texas Bulletin 
 
 (e) CamancJiean Cretaceous (Continued) 
 
 
 .S 
 
 s 
 
 o 
 
 O 
 
 O 
 
 o 
 
 O 
 
 O 
 
 O 
 
 
 
 ^ 
 
 09^ 
 
 "S 
 
 o 
 
 ^ 
 
 
 ^ 
 
 & 
 
 d 
 S 
 
 O 
 
 be 
 
 M 
 
 ^ 
 
 o 
 
 O 
 
 £ 
 
 Ja 
 
 ■S 
 
 840 
 
 0.82 
 
 10.68 
 
 6.23 
 
 1.24 
 
 0.04 
 
 43.36 
 
 1.22 
 
 0.76 
 
 0.31 
 
 
 0.12 
 
 
 36.46 
 
 100.14 
 
 841 
 
 1.23 
 
 8.94 
 
 SM 
 
 2.27 
 
 0.06 
 
 45.43 
 
 I.IS 
 
 0.4,1 
 
 0.27 
 
 
 0.14 
 
 
 37.2S 
 
 100.27 
 
 842 
 
 0.89 
 
 lO.OC 
 
 3.8£ 
 
 1.63 
 
 0.04 
 
 43.36 
 
 1.26 
 
 o.ec 
 
 0.6C 
 
 
 0.16 
 
 
 37.75 
 
 99.9(1 
 
 843 
 
 1.45 
 
 9.26 
 
 3.59 
 
 1.0£ 
 
 0.05 
 
 44.76 
 
 0.93 
 
 0.63 
 
 
 
 0.3C 
 
 
 37.83 
 
 99.79 
 
 844 
 
 0.41 
 
 S.6£ 
 
 2.3S 
 
 0.93 
 
 0.06 
 
 48.58 
 
 0.94 
 
 0.46 
 
 0.7f 
 
 
 0.64 
 
 
 
 39.80 
 
 100.43 
 
 845 
 
 0.44 
 
 7.1S 
 
 3.92 
 
 1.24 
 
 O.OS 
 
 46.63 
 
 1.07 
 
 0.61 
 
 0.15 
 
 
 0.1£ 
 
 
 39.32 
 
 100.28 
 
 846 
 
 0.65 
 
 5.76 
 
 2.7C 
 
 0.47 
 
 0.03 
 
 49.17 
 
 0.96 
 
 0.64 
 
 0.11 
 
 
 0.71 
 
 
 39.17 
 
 100.27 
 
 847 
 
 I.IS 
 
 7.80 
 
 4.64 
 
 1.14 
 
 0.02 
 
 45.33 
 
 1.13 
 
 0.66 
 
 
 
 
 0.12 
 
 
 38.10 
 
 100.26 
 
 848 
 
 0.37 
 
 6.00 
 
 •1.5C 
 
 1.63 
 
 0.05 
 
 48.31 
 
 1.16 
 
 0.65 
 
 0.17 
 
 
 0.24 
 
 
 39.73 
 
 99.70 
 
 849 
 
 0.44 
 
 6.64 
 
 3.65 
 
 I.IS 
 
 0.06 
 
 47.23 
 
 1.26 
 
 0..66 
 
 
 
 O.IS 
 
 
 39.12 
 
 100.22 
 
 860 
 
 0.52 
 
 4.93 
 
 1.7S 
 
 0.67 
 
 0.08 
 
 49.38 
 
 0.87 
 
 0.12 
 
 0.71 
 
 
 0.13 
 
 
 40.82 
 
 99.96 
 
 851 
 
 0.35 
 
 6.17 
 
 2.41 
 
 0.88 
 
 0.06 
 
 48.56 
 
 0.91 
 
 0.4<! 
 
 O.06 
 
 
 O.OS 
 
 
 39.S4 
 
 99.80 
 
 852 
 
 0.36 
 0.47 
 0.77 
 
 2.82 
 6.76 
 4.31 
 
 0.96 
 2.83 
 1.89 
 
 0.51 
 0.67 
 0.52 
 
 0.09 
 0.03 
 O.OS 
 
 51.39 
 47.64 
 49.54 
 
 1.10 
 0.76 
 0.84 
 
 0.22 
 0.40 
 0.49 
 
 
 
 O.OS 
 0.12 
 0.70 
 
 — 
 
 42.40 
 40.33 
 40.70 
 
 99.93 
 
 858 
 
 
 
 99.91 
 
 854 
 
 0.08 
 
 
 99.82 
 
 855 
 
 0.37 
 
 2.28 
 
 0.67 
 
 0.56 
 
 0.04 
 
 62.14 
 
 1.22 
 
 0.02 
 
 
 
 0.12 
 
 
 42.54 
 
 100.17 
 
 856 
 
 0.23 
 
 2.87 
 
 1.09 
 
 0.46 
 
 0.03 
 
 62.49 
 
 0.86 
 
 0.24 
 
 0.17 
 
 
 0.10 
 
 
 41.26 
 
 99.79 
 
 857 
 
 0.56 
 
 3.84 
 
 1.31 
 
 0.47 
 
 0.03 
 
 51.29 
 
 1.03 
 
 0.28 
 
 
 
 0.07 
 
 
 40.84 
 
 99.72 
 
 858 
 
 0.51 
 
 11.31 
 
 5.89 
 
 0.77 
 
 o.oe 
 
 42.86 
 
 1.08 
 
 0.47 
 
 0.26 
 
 
 
 Trace 
 
 „ 
 
 37.32 
 
 100.60 
 
 859 
 
 0.28 
 
 4.32 
 
 3.22 
 
 0.57 
 
 0.04 
 
 40.67 
 
 7.63 
 
 0.10 
 
 0.10 
 
 
 0.12 
 
 
 
 43.20 
 
 100.15 
 
 860 
 
 0.49 
 
 10.39 
 
 3.13 
 
 1.03 
 
 0.03 
 
 35.00 
 
 11.42 
 
 0.24 
 
 
 
 
 0.44 
 
 — .- 
 
 S8.13 
 
 100.39 
 
 861 
 
 0.38 
 
 1.38 
 
 4.20 
 
 0.57 
 
 0.03 
 
 49.60 
 
 1.77 
 
 0.39 
 
 none 
 
 
 0.13 
 
 
 
 41.91 
 
 100.28 
 
 882 
 
 0.76 
 
 8.09 
 
 3.94 
 
 0.83 
 
 0.03 
 
 46.62 
 
 0.94 
 
 0.39 none 
 
 
 0.08 
 
 
 
 38.67 
 
 100.24 
 
 863 
 
 0.41 
 
 10.33 
 
 4.75 
 
 1.60 
 
 0.07 
 
 43.25, 0.60, 0.67 
 
 0.05 
 
 
 0.06 
 
 
 38.27 
 
 100.05 
 
 8(^4 
 
 
 O.40 
 0.40 
 
 0.04 
 none 
 
 0.46 
 1.20 
 
 
 
 53.71 
 53,23 
 
 Tr. 
 none 
 
 
 
 42.00 
 41.47 
 
 
 
 1.30 
 2.68 
 
 97.91 
 
 865 
 
 
 
 none 
 
 
 98.93 
 
 866 
 
 
 0.80 
 
 1.55 
 
 0.75 
 
 
 45.41 
 
 5.29 
 
 
 
 41.60 
 
 0.34 
 
 
 S.OO 
 
 98.74 
 
 867 
 
 
 0.67 
 
 
 0.91 
 
 
 63.45 
 
 
 
 
 42.10 
 
 
 
 1.80 
 
 98.93 
 
 868 
 
 
 
 1.07 
 0.70 
 
 0.22 
 none 
 
 0.71 
 0.75 
 
 
 62.91 
 63.60 
 
 
 
 
 41.28 
 42.20 
 
 
 
 1.91 
 1.46 
 
 98.10 
 
 869 
 
 none 
 
 
 
 
 
 ge.si 
 
 870 
 
 
 0.60 
 
 0.21 
 
 0.76 
 
 
 61.18 
 
 none 
 
 
 
 41.74 
 
 3.54 
 
 
 1.96 
 
 99.88 
 
 871 
 
 
 0.90 
 
 0.06 
 
 0.14 
 
 
 63.96 
 
 none 
 
 
 
 
 42.40 
 
 
 
 1.71 
 
 99.17 
 
 872 
 
 
 1.30 
 
 0.6(1 
 
 0.60 
 
 
 63.72 
 
 none 
 
 
 
 42.44 
 
 none 
 
 
 1.06 
 
 99.62 
 
 873 
 
 
 0.50 
 
 0.74 
 
 1.82 
 
 
 52.20 
 
 1.01 
 
 
 
 42.60 
 
 none 
 
 
 1.60 
 
 100.37 
 
 874 
 
 
 0.80 
 0.70 
 
 0.2S 
 0.29 
 
 0.75 
 1 ?.l 
 
 
 
 54.06 
 63.08 
 
 none 
 none 
 
 
 
 43.49 
 42.06 
 
 none 
 none 
 
 
 1.27 
 2.50 
 
 99.62 
 
 875 
 
 
 
 99. 7S 
 
 876 
 
 
 
 1.20 
 1.20 
 
 none 
 0.27 
 
 2.00 
 1.67 
 
 
 
 62.20 
 53.50 
 
 none 
 none 
 
 
 
 41.20 
 42.20 
 
 none 
 none 
 
 — 
 
 2.20 
 0.94 
 
 98.80 
 
 877 
 
 
 
 99.74 
 
 87S 
 
 
 0.16 
 0.86 
 
 0.40 
 0.16 
 
 0.60 
 0.44 
 
 
 62.50 
 63.16 
 
 none 
 
 
 
 41.60 
 42.20 
 
 none 
 0.34 
 
 — 
 
 2.90 
 1.70 
 
 98.06 
 
 870 
 
 
 
 98.86 
 
 880 
 
 
 1.26 
 
 none 
 
 0.91 
 
 
 62.57 
 
 none 
 
 
 
 41.30 
 
 0.86 
 
 
 2.14 
 
 98.94 
 
 881 
 
 
 0.30 
 
 o.eo 
 
 0.30 
 0.45 
 
 0.90 
 0.76 
 
 
 56.10 
 53.63 
 
 none 
 
 
 
 43.30 
 42.06 
 
 
 
 0.04 
 1.70 
 
 99.94 
 
 
 
 
 
 
 98.99 
 
 88fJ 
 
 
 2..W 
 
 0.68 
 
 0.92 
 
 
 61.79 
 
 Tr. 
 
 
 
 40.20 
 
 
 
 2.60 
 
 98.29 
 
 ,884 
 
 
 0.70 
 
 2.30 
 
 0.30 
 
 
 63.13 
 
 none 
 
 
 _„ 
 
 40.40 
 
 none 
 
 
 3.40 
 
 100.23 
 
 885 
 
 
 0.50 
 
 0.04 
 
 0.76 
 
 
 53.23 
 
 Tr. 
 
 -__-_ 
 
 :._ 
 
 41.64 
 
 
 
 
 1.92 
 
 98.09 
 
 886 
 
 
 0.20 
 
 none 
 
 ' 0.60 
 
 
 63.58 
 
 none 
 
 
 
 42.06 
 
 
 
 2.00 
 
 98.39 
 
 
 
 
 0.60 
 0.60 
 
 0.05 
 2.38 
 
 0.76 
 1.52 
 
 
 
 54.06 
 40.62 
 
 none 
 9.67 
 
 
 
 42.48 
 42.30 
 
 
 
 1.58 
 3.84 
 
 99.42 
 
 888 
 
 
 
 
 none 
 
 
 100.93 
 
 889 
 
 
 
 0.60 
 
 none 
 
 1.82 
 
 
 
 53.57 
 
 none 
 
 
 
 
 
 42.20 
 
 none 
 
 
 2.06 
 
 100.06 
 
 890 
 
 
 1.40 
 
 none 
 
 1.50 
 
 
 64.00 
 
 none 
 
 ^ 
 
 
 42.43 
 
 
 
 0.73 
 
 100.06 
 
 891 
 
 
 0.40 
 
 0.05 
 
 1.35 
 
 
 64.08 
 
 
 
 
 42.49 
 
 
 
 1.51 
 
 99.88 
 
 892 
 
 
 20 
 
 41 
 
 45 
 
 
 54.59 
 
 
 
 
 42.90 
 
 
 
 1.17 
 
 99.72 
 
 893 
 
 
 0.28 
 
 none 
 
 0.75 
 
 
 64.69 
 
 none 
 
 
 i 
 
 42.90 
 
 
 
 1.10 
 
 99.60 
 
 894 
 895 
 
 
 0.06 
 5.30 
 
 0.40 
 5.30 
 
 0.90 
 1.50 
 
 
 
 53.22 
 40.02 
 
 none 
 4.85 
 
 
 
 41.82 
 
 
 
 . 2.28 
 . 7.64 
 
 98.68 
 
 
 
 36.86 
 
 
 
 
 100.47 
 
 896 
 
 
 0.40 
 0.39 
 
 0.06 
 
 0.44 
 
 
 
 64.41 
 
 56.06 
 55.00 
 
 none 
 
 0.11 
 
 Tr. 
 
 
 
 42.60 
 
 42.94 
 42.90 
 
 0.32 
 
 
 1.40 
 
 99.61 
 
 
 
 
 
 897 
 
 0. 
 
 31 
 
 98.81 
 
 
 
 
 
 
 
 100.20 
 100.49 
 
 899 
 
 
 5.96 
 3.64 
 
 2.00 
 
 0.82 
 
 
 41.66 
 
 45.00 
 64.80 
 
 7.51 
 
 2.72 
 0.48 
 
 
 
 
 41.30 
 
 41.20 
 41.90 
 
 
 
 — 
 
 1.24 
 
 900 
 
 6. 
 
 98 
 
 99.44 
 
 100.76 
 98.44 
 
 99.06 
 98.78 
 
 
 
 
 
 
 1.76 
 
 "02 
 
 
 
 
 0.90 
 
 
 53.36 
 
 
 
 
 41.93 
 
 
 
 90S 
 
 
 06 
 
 
 4 50 
 
 
 50. 2p 
 50.15 
 
 nonr 
 
 
 
 38.73 
 
 
 
 4 67 
 
 904 
 
 
 OTlO 
 
 3.51 
 
 3.25 
 
 
 0.15 
 
 
 
 39.57 
 
 :::::: ;;::; 
 
 3.03 
 
Chemical Analyses of Texas Bocks and Minerals 179 
 (e) CamancJiean Cretaceous (Continued) 
 
 o 
 
 o 
 
 S 
 
 5 
 
 <3 
 
 i 
 
 O 
 
 o 
 
 a 
 D 
 
 O 
 
 O 
 
 O 
 
 1 
 
 o 
 o 
 
 M 
 
 o 
 
 ID 
 
 o 
 
 so 
 
 1 
 
 909 
 
 
 0.50 
 0.30 
 0.90 
 
 0.67 
 
 none 
 
 1.10 
 
 0.75 
 0.75 
 1.50 
 
 
 
 62.60 
 63.66 
 62.50 
 
 0.29 
 0.07 
 
 
 ---- 
 
 41.60 
 42.34 
 41.30 
 
 
 
 2.28 
 1.66 
 2.00 
 
 98.61 
 
 906 
 
 
 
 
 98.68 
 
 BOi 
 
 
 
 98.ao 
 
 908 (See miscellaneous analyses.) 
 
 
 
 
 
 (f) Upper Cretaceous 
 
 909 
 910 
 
 
 
 911 
 
 
 912 
 
 
 
 913 
 
 
 914 
 
 
 916 
 
 
 916 
 
 0.20 
 
 917 
 
 0.10 
 
 91 fi 
 
 
 918 
 
 
 920 
 
 0.49 
 
 921 
 
 0.38 
 
 922 
 
 
 923 
 
 
 924 
 
 
 925 
 
 1.24 
 
 926 
 
 
 927 
 
 
 92S 
 
 7.54 
 
 92£ 
 
 0.37 
 
 93(1 
 
 0.20 
 
 931 
 
 0.67 
 
 9.32 
 
 0.27 
 
 9R3 
 
 0.43 
 
 9,34 
 
 0.56 
 
 935 
 
 0.60 
 
 9,36 
 
 0.52 
 
 937 
 
 0.43 
 
 9S7 
 
 0.43 
 
 9,3fi 
 
 1.27 
 
 939 
 
 0.51 
 
 940 
 
 0.S2 
 
 3.28 
 
 2.93 
 
 1.07 
 
 
 7.80 
 
 3.45 
 
 1.35 
 
 
 
 
 
 
 
 5.77 
 
 2. 
 
 12 
 
 20.09 
 
 2.40 
 
 1.20 
 
 
 22.90 
 
 1.70 
 
 0.70 
 
 
 16.50 
 
 6.10 
 
 1.00 
 
 
 
 22.10 
 
 2. 
 
 90 
 
 7. ,1(1 
 
 1.30 
 
 1.30 
 
 
 20.72 
 
 0.16 
 
 0.45 
 
 
 
 9.40 
 
 2.40 
 
 3.30 
 
 
 4.56 
 
 2.96 
 
 1.65 
 
 
 6.54 
 
 3.22 
 
 2.12 
 
 0.04 
 
 9.08 
 
 4.59 
 
 2.33 
 
 0.11 
 
 23.56 
 
 1. 
 
 50 
 
 27.76 
 
 4.70 
 
 3.40 
 
 
 15.00 
 
 4.34 
 
 1.76 
 
 
 7.80 
 
 2.11 
 
 1.38 
 
 0.01 
 
 O.70 
 
 none 
 
 0.74 
 
 
 
 0.55 
 
 6.61 
 
 1.47 
 
 
 23.70 
 
 14.07 
 
 9.23 
 
 
 
 4.70 
 
 1.61 
 
 0.36 
 
 0.03 
 
 3.12 
 
 0.92 
 
 0.26 
 
 O.Ofi 
 
 9.18 
 
 3.50 
 
 1.05 
 
 0.06 
 
 4.30 
 
 1.62 
 
 0.77 
 
 0.05 
 
 4.76 
 
 1.72 
 
 0.62 
 
 0.0« 
 
 10.19 
 
 3.81 
 
 1.14 
 
 O.OS 
 
 6.17 
 
 2.17 
 
 0.88 
 
 0.0! 
 
 6.76 
 
 1.19 
 
 0.82 
 
 0.0! 
 
 3.82 
 
 1.30 
 
 0.72 
 
 0.02 
 
 3.S2 
 
 1.30 
 
 0.72 
 
 0.02 
 
 11.31 
 
 5.78 
 
 1.72 
 
 
 10. .32 
 
 5.41 
 
 1.15 
 
 
 
 5.94 
 
 1.41 
 
 1.31 
 
 
 
 50.72. 
 
 none 
 
 
 
 38.30 
 
 
 
 8.80 
 
 100.10 
 
 46.64 
 
 none 
 
 
 
 36.66 
 
 
 
 3.36 
 
 99.24 
 
 60.49 
 
 CIS 
 
 
 
 4'i 
 
 39.66 
 
 0.07* 
 
 
 
 
 98.19 
 
 40 8? 
 
 1. 
 
 
 
 > ' 
 
 
 
 
 40.77 
 
 
 2. 00 
 
 
 
 2.10* 
 
 
 
 
 48 31 
 
 
 
 
 
 
 
 40.82 
 
 0.70* 
 
 
 
 
 49.!!fl 
 
 0.16 
 
 
 
 ii.so 
 
 
 1.60 
 
 100.05 
 
 43.15 
 
 0.52 
 
 . 
 
 
 
 34.20 
 
 
 
 
 0.32 
 
 99.62 
 
 40.04 
 
 0.29 
 
 
 
 31.46 
 
 1.51 
 
 
 9.80 
 
 98.20 
 
 47.16 
 
 
 
 
 37.05 
 
 0.96 
 
 
 5.81 
 
 100.14 
 
 46.72 
 
 0.61 
 
 O..^ 
 
 0.38 
 
 
 0.55 
 
 
 38.64 
 
 99.9tf 
 
 44.44 
 
 0.62 
 
 0.72 
 
 0.74 
 
 
 
 0.07 
 
 
 36.80 
 
 99.78 
 
 .39 .3?^ 
 
 SR 
 
 
 
 30.89 
 
 
 
 
 95.84 
 
 S6.40 
 
 none 
 
 
 
 28.60 
 
 0.60 
 
 
 4.70 
 
 100.68 
 
 41.00 
 
 
 
 
 32.20 
 
 0.82 
 
 
 4.60 
 
 99.62 
 
 45.88 
 
 0.86 
 
 l.i)4 
 
 0.91 
 
 
 0.31 
 
 
 
 38.24 
 
 100.27 
 
 51.50 
 
 0.17 
 none 
 
 
 
 40.86 
 38.26 
 12.84 
 
 
 
 3.64 
 
 6.64 
 
 97.61 
 
 47.65 
 
 
 
 none 
 
 
 
 100.18 
 
 22.13 
 
 
 
 100.00 
 
 60.01 
 
 1.09 
 
 0.28 
 
 0.06 
 
 
 0.09 
 
 
 41.27 
 
 99.86 
 
 S\.9\ 
 
 0.44 
 
 0.16 
 
 
 
 
 0.52 
 
 
 
 42.84 
 
 100.40 
 
 45.22 
 
 1.13 
 
 0.65 
 
 0.17 
 
 
 0.14 
 
 
 
 38.02 
 
 100.28 
 
 50.22 
 
 0.97 
 
 0.47 
 
 0.23 
 
 
 0.22 
 
 
 40.88 
 
 99.90 
 
 49.79 
 
 0.88 
 
 0.46 
 
 0.06 
 
 
 0.10 
 
 
 40.95 
 
 99.83 
 
 44.34 
 
 l.Ofi 
 
 0.81 
 
 0.12 
 
 
 0.22 
 
 
 
 37.54 
 
 99.84 
 
 48.66 
 
 0.90 
 
 0.21 
 
 O.60 
 
 
 0.30 
 
 
 
 89.89 
 
 99.87 
 
 49.85 
 
 1.30 
 
 0.39 
 
 
 ___. 
 
 0.26 
 
 
 40.48 
 
 100.18 
 
 60.72 
 
 1.05 
 
 0.44 
 
 0.14 
 
 
 0.29 
 
 
 
 41.17 
 
 100.10 
 
 50.72 
 
 1.05 
 
 0.44 
 
 0.14 
 
 
 0.29 
 
 
 41.17 
 
 lOO.lO* 
 
 42.61 
 
 
 0.33 
 
 2..36 
 
 83.86 
 
 1.13 
 
 6.i.3i 
 
 
 
 100.601 
 
 45.31 
 
 Tr. 
 
 0.17 
 
 2.07 
 
 34.44 
 
 1.04 
 
 0.218 
 
 
 100.638 
 
 58.73 
 
 
 
 0.20 
 
 2.60 
 
 37.84 
 
 0.42 
 
 0.142 
 
 
 
 99.142 
 
 (g) Tertiary 
 
 941 I 2.06 0.90 1.021. 
 
 942 8.50 0.60 2.26. 
 
 9431 28.701 0.591 0.93). 
 
 62,14 
 
 46.87 
 
 87.39 
 
 noner ( f 40.97 0.16 
 
 0.39 37.10 0.54 
 
 0.30| I 29.381 0.4li 
 
 . 2.17 99.42 
 . 2.96 99.22 
 . 3.O2I 100 72 
 
 (h) Pleistocene 
 
 944 
 945 
 
 946 
 
 947 
 
 18.80 
 33.70 
 
 22.30 
 5.80 
 
 •Sulphur. 
 •Sulphur. 
 
 6. 90 
 
 := 
 
 31.31 
 30.34 
 
 40.19 
 47.07 
 
 4.85 
 
 0.14 
 0.14 
 
 
 
 29.94 
 23.84 
 
 31.68 
 36.84 
 
 0.65 
 0.S5 
 
 0.14 
 0.20 
 
 — : 
 
 5.86 
 7.12 
 
 5.87 
 8.36 
 
 1.441 1.76 
 
 
 
 0.42 
 0.60 
 
 98.21 
 99.75 
 
 100.64 
 99.01 
 
ISO 
 
 University of Texas Bulletin 
 (i) Unclassified 
 
 6 
 
 S 
 
 1 
 'o 
 
 i 
 
 O 
 < 
 
 6' 
 
 i 
 
 O 
 
 o 
 o 
 
 O 
 
 O 
 
 O 
 ca 
 
 6 
 D 
 
 O 
 
 6 
 (3 
 
 90 
 00 
 
 ll)';3 
 
 S "3 
 
 1 
 
 EH 
 
 948 
 949 
 950 
 951 
 952 
 953 
 964 
 955 
 956 
 
 "iloi 
 
 0.81 
 
 S.28 
 
 5.54 
 
 12-80 
 
 26.64 
 
 13.76 
 
 1.68 
 
 7.77 
 
 6.00 
 
 12.50 
 
 6.04 
 
 30.10 
 
 3.80 
 
 0.60 
 
 0.46 
 
 2.23 
 
 9.04 
 
 29.20 
 
 11.00 
 
 40.40 
 
 5.44 
 
 6.60 
 
 39.90 
 
 e.io 
 
 1.30 
 62.80 
 0.74 
 4.00 
 0.80 
 0.60 
 4.80 
 0.30 
 22.76 
 2.90 
 1.90 
 2.40 
 2.78 
 S.70 
 9.12 
 0.68 
 0.60 
 6.30 
 0.90 
 5.50 
 1.16 
 3.80 
 0.60 
 2.58 
 1.00 
 4.20 
 4.00 
 1.00 
 0.58 
 1.30 
 1.88 
 0.19 
 
 0.40 
 28.60 
 4.80 
 5.60 
 3.96 
 5.40 
 4.60 
 6.20 
 3.68 
 
 2.93 
 2.17 
 2.88 
 0.43 
 1.91 
 0.65 
 0.05 
 1.40 
 1.26 
 2.01 
 4.68 
 0.63 
 none 
 none 
 0.35 
 1.84 
 2.05 
 1.60 
 1.83 
 4.92 
 0.82 
 2.36 
 1.48 
 4.08 
 5.87 
 0.72 
 1.36 
 
 1.07 
 1.05 
 2.42 
 3.18 
 4.57 
 0.91 
 4.26 
 3.60 
 2.40 
 1.36 
 1.82 
 3.27 
 0.60 
 1.80 
 Trace 
 6.76 
 4.95 
 2.30 
 7.61 
 1.20 
 3.18 
 4.54 
 1.82 
 0.60 
 1 53 
 
 
 
 60.72 
 49.77 
 43.46 
 38.16 
 39.60 
 60.74 
 46.38 
 41.76 
 46.07 
 50.04 
 33.66 
 60.82 
 43.57 
 54.06 
 63.00 
 33.50 
 31.82 
 43.73 
 24.94 
 48.04 
 46.41 
 28.59 
 49.98 
 49.29 
 18.19 
 54.77 
 50.16 
 54.82 
 62.79 
 50.36 
 62.27 
 36.40 
 60.82 
 52.87 
 51.33 
 52.86 
 49. f 9 
 44.66 
 62.50 
 63.63 
 47.40 
 48.76 
 61.51 
 61.60 
 30.20 
 52.27 
 63.30 
 63.97 
 50.13 
 49.07 
 62.80 
 64.40 
 63.87 
 60.19 
 52.14 
 
 64.89 
 28.39 
 50.02 
 48.69 
 60.65 
 44.79 
 51.26 
 50.00 
 51.30 
 
 none 
 none 
 1.67 
 none 
 1.06 
 0.93 
 2.36 
 5.94 
 0.22 
 none 
 none 
 none 
 0.46 
 none 
 none 
 8.87 
 0.62 
 none 
 none 
 none 
 1.40 
 none 
 none 
 none 
 0.64 
 
 ::::: 
 
 ---- 
 
 38.30 
 39.00 
 25.80 
 30.40 
 29.60 
 40.66 
 38.70 
 39.38 
 36.30 
 39.74 
 28.10 
 40.10 
 43.06 
 42.40 
 41.64 
 35.82 
 26.32 
 36.90 
 22.10 
 40.20 
 37.84 
 23.30 
 39.30 
 38.73 
 12.10 
 41.60 
 39.40 
 
 "ii'ii 
 
 40.70 
 .40.80 
 28.60 
 40.12 
 41,25 
 39.95 
 41.62 
 38.74 
 36.85 
 42.14 
 42.14 
 37.49 
 42.66 
 41.28 
 40.90 
 40.78 
 37.87 
 41.88 
 41.41 
 37.28 
 37.80 
 41.22 
 41.36 
 41.61 
 39.40 
 40.95 
 
 42.45 
 24.30 
 39.40 
 37.00 
 40.27 
 36.60 
 40.27 
 39.27 
 41.29 
 
 none 
 none 
 none 
 
 0.59 
 
 0.49 
 none 
 none 
 
 0.21 
 none 
 
 0.54 
 none 
 
 0.48 
 none 
 none 
 none 
 
 0.27 
 none 
 none 
 none 
 
 0.26 
 
 0.14 
 nons 
 none 
 
 ---- 
 
 3.80 
 1.60 
 0.36 
 1.80 
 6.70 
 2.62 
 1.20 
 2.64 
 1.80 
 1.66 
 0.20 
 2.00 
 0.73 
 1.42 
 
 100.10 
 99.08 
 99.39 
 
 100.60 
 97.68 
 98.68 
 99.71 
 
 100.38 
 98.76 
 99.84 
 
 968 
 959 
 960 
 
 
 
 
 
 99.00 
 99.62 
 99.48 
 
 961 
 
 
 
 
 lOO.U 
 97.22 
 
 963 
 964 
 966 
 
 
 
 
 — 
 
 4.04 
 3.18 
 2.40 
 1.90 
 1.34 
 2.66 
 1.04 
 1.10 
 4.95 
 5.00 
 2.40 
 3.10 
 
 "i'.ss. 
 
 0.80 
 2.48 
 4.70 
 2.68 
 1.46 
 3.19 
 
 99.87 
 98.U. 
 98.87 
 
 966 
 967 
 
 — 
 
 
 98.68 
 101.14 
 
 968 
 969 
 
 mil 
 
 
 
 99.17 
 99.87 
 99.78 
 
 
 
 
 98.9S 
 
 972 
 
 
 
 96.13 
 
 ■ 973 
 
 0.68' 
 
 1.30 
 
 — 
 
 
 
 
 100.81 
 
 
 
 
 99.31 
 
 975 
 
 Tr. 
 none 
 
 
 
 
 
 
 976 
 
 none 
 0.89 
 0.09 
 4.70 
 0.98 
 0.13 
 0.37 
 2.11 
 0.75 
 2.63 
 0.40 
 O.06 
 3.20 
 
 none 
 0.61 
 0.09 
 7.69 
 1.48 
 l.EO 
 
 none 
 1.87 
 2.93 
 0.37 
 
 none 
 
 0.22 
 
 0.97 
 
 _ 0.97 
 
 1.60 
 
 2.81 
 
 0.61 ^ 
 
 3.40 
 
 98.69 
 
 977 
 
 
 
 
 
 100.36 
 
 978 
 979 
 
 0.26 
 none 
 0.39 
 0.06 
 0.02 
 none 
 0.10 
 0.10 
 0.29 
 none 
 none 
 4.46 
 0.87 
 0.60 
 8.93 
 none 
 none 
 none 
 none 
 none 
 none 
 none 
 none 
 0.51 
 2.20 
 
 Tr. 
 none 
 none 
 none 
 
 Tr. 
 none 
 
 'o.li 
 0.71 
 
 
 
 0.8.9 
 none 
 0.41 
 0.41 
 0.69 
 0.12 
 0.69 
 0.69 
 0.35 
 
 ---- 
 
 97.69 
 100.59 
 
 980 
 981 
 982 
 983 
 
 1.31 
 1.21 
 1.43 
 1.07 
 1.65 
 1.87 
 0.60 
 0.90 
 0.06 
 1.05 
 0.76 
 0.62 
 2.67 
 1.72 
 1.14 
 2.20 
 1.71 
 1.37 
 1.03 
 1.32 
 1.14 
 1.76 
 1.03 
 
 
 
 — 
 
 
 
 99.62 
 99.27 
 99.38 
 100.45 
 
 984 
 
 
 2.90 
 2.45 
 2.26 
 1.76 
 5.21 
 1.15 
 0.12 
 2.64 
 4.82 
 0.31 
 
 99.32 
 
 965 
 986 
 
 
 
 98.87 
 99.22 
 
 9S7 
 
 
 
 99.09 
 
 988 
 989 
 990 
 
 
 
 
 e: 
 
 — 
 
 100.60 
 98.8« 
 
 100. 84 
 97.51 
 
 992 
 993 
 994 
 
 1.72 
 5.84 
 0.41 
 0.41 
 3.84 
 1.37 
 0.48 
 2.20 
 1.16 
 0.82 
 0.41 
 
 0.21 
 none 
 none 
 none 
 
 — 
 
 100.51 
 
 99.99 
 
 100.81 
 
 996 
 
 
 
 — 
 
 0.63 
 0.68 
 3.43 
 
 100.82 
 
 996 
 
 
 
 99.71 
 
 997 
 
 
 
 99.97 
 
 998 
 
 
 
 1.70, 9S.60 
 
 999 
 
 
 
 0.14 
 0.64 
 3.60 
 2.05 
 
 "'ilo 
 
 2.70 
 S.OO 
 
 100.00 
 
 lOOO 
 100] 
 10O2 
 
 ----- 
 
 
 
 99.83 
 99.12 
 99.94 
 
 1003' 
 
 0. 
 
 11.48 
 
 1.29 
 
 1.67 
 
 5. 
 7.33 
 1.77 
 1.51 
 1.61 
 
 50 
 2.42 
 1.36 
 1.53 
 
 36 
 1.67 
 1.23 
 1.29 
 0.97 
 
 100.03 
 
 10O4 
 1005 
 
 — 
 
 
 100.09 
 99 6a 
 
 1006 
 1007 
 
 
 
 99.39 
 100.27 
 
 lOOS 
 
 
 
 none 
 0.41 
 none 
 none 
 
 none 
 none 
 
 4.96 
 1.49 
 
 100.78 
 
 1009 
 1010 
 1011 
 
 none 
 none 
 
 none 
 none 
 
 100.92 
 99.10 
 100.37 
 
 ♦Sulfur (Iree) and in organic combination 1.68 per cent. 
 
Chemical Analyses of Texas Books and Minerals 181 
 (i) Unclassified 
 
 6 
 
 
 1 
 
 
 
 5 
 
 
 
 
 
 s 
 
 
 
 
 
 
 1 
 
 ■ 
 
 
 6 
 DQ 
 
 6 
 
 00 
 
 m'-P 
 
 la 
 
 1 
 
 1012 
 
 
 2.90 
 
 1.41 
 
 0.31 
 
 
 51.36 
 
 none 
 
 
 
 39.40 
 
 none 
 
 
 8.90 
 
 99.28 
 
 1013 
 
 
 S.30 
 
 0.12 
 
 2.28 
 
 
 52.48 
 
 
 
 
 
 41.23 
 
 
 
 
 1.38 
 
 loo.sa 
 
 1014 
 
 
 6.66 
 
 1.20 
 
 1.50 
 
 
 47.93 
 
 1.30 
 
 
 
 
 36.64 
 
 0.34 
 
 _ 
 
 4.76 
 
 99.23 
 
 lOlS 
 
 
 62.00 
 
 3.75 
 
 0.25 
 
 
 46.00 
 
 none 
 
 
 
 85.70 
 
 0.05* 
 
 IT. 
 
 
 100.00 
 
 1016 
 
 6.42 
 
 6.70 
 
 4.60 
 
 0.34 
 
 
 48.70 
 
 none 
 
 
 
 
 34.20 
 
 0.14* 
 
 IT. 
 
 
 100.00 
 
 1017 
 
 
 1.34 
 
 6.04 
 
 1.06 
 
 
 48.23 
 
 
 
 
 
 39.20 
 
 none 
 
 
 
 4.80 
 
 100.67 
 
 1018 
 
 
 
 0.80 
 
 1.6S 
 
 1.52 
 
 
 50.35 
 
 0.54 
 
 
 
 
 40.40 
 
 none 
 
 
 
 3.24 
 
 98.63 
 
 1019 
 
 
 13.80 
 
 6.22 
 
 5.28 
 
 
 39.93 
 
 Tr. 
 
 
 
 
 
 31.37 
 
 
 
 
 1.95 
 
 98.65 
 
 1020 
 
 
 2.30 
 
 6.S2 
 
 1.52 
 
 
 45.21 
 
 none 
 
 
 
 38.10 
 
 none 
 
 
 6.60 
 
 99.45 
 
 1021 
 
 
 1.90 
 
 6.74 
 
 0.7a 
 
 
 46.38 
 
 none 
 
 
 
 
 39.10 
 
 none 
 
 
 4.30 
 
 99.18 
 
 1022 
 
 
 0.40 
 
 0.80 
 
 1.20 
 
 
 64.06 
 
 none 
 
 
 
 42.48 
 
 none 
 
 
 1.92 
 
 100.88 
 
 102S 
 
 
 1.00 
 
 0.20 
 
 1.20 
 
 
 54.69 
 
 
 
 
 42.90 
 
 
 
 0.60 
 
 100.49 
 
 1024 
 
 
 0.90 
 
 
 1.20 
 
 
 54.33 
 
 
 
 
 42.70 
 
 
 
 0.94 
 
 100.07 
 
 102? 
 
 
 1.10 
 
 0.90 
 
 1.50 
 
 
 51.24 
 
 none 
 
 
 
 40.26 
 
 
 
 3.70 
 
 98.70 
 
 1026 
 
 
 1.08 
 
 0.51 
 
 0.75 
 
 
 52.02 
 
 
 
 
 40.88 
 
 
 
 3.55 
 
 98.77 
 
 1027 
 
 
 2.34 
 
 2.81 
 
 1.08 
 
 
 44.96 
 
 
 
 
 39.44 
 
 
 
 8. 98 
 
 94. a 
 
 1028 
 
 
 0.48 
 
 0.10 
 
 0.44 
 
 
 62.71 
 
 0.19 
 
 
 
 39.24 
 
 
 
 8.98 
 
 97.14 
 
 1029 
 
 
 0.60 
 
 none 
 
 1.20 
 
 
 
 64.60 
 
 none 
 
 
 
 42.90 
 
 none 
 
 
 
 0.94 
 
 100.24 
 
 1030 
 
 
 1.00 
 
 0.30 
 
 0.60 
 
 
 55.12 
 
 
 
 
 43.31 
 
 
 
 0.39 
 
 100.72 
 
 1031 
 
 
 1.00 
 
 0.60 
 
 0.60 
 
 
 54.08 
 
 none 
 
 
 
 42.60 
 
 none 
 
 
 1.60 
 
 100.28 
 
 1032 
 
 
 0.26 
 
 0.16 
 
 0.75 
 
 
 53.86 
 
 none 
 
 
 
 42.32 
 
 none 
 
 
 1.88 
 
 99.22 
 
 ,1033 
 
 
 0.70 
 
 0.70 
 
 0.80 
 
 
 42.79 
 
 9.24 
 
 
 
 
 44.21 
 
 none 
 
 
 
 1.35 
 
 100.79 
 
 1034 
 
 
 0.40 
 
 none 
 
 0.75 
 
 
 54.08 
 
 none 
 
 
 
 
 42.49 
 
 none 
 
 
 1.41 
 
 99.18 
 
 1935 
 
 
 0.22 
 
 2.90 
 
 2.90 
 
 
 60.40'none 
 
 
 
 39.60 
 
 none 
 
 4.72 
 
 98.74 
 
 1086 
 
 
 0.3<1 
 
 2.26 
 
 0.76 
 
 
 51.98 
 
 none 
 
 
 
 
 40.85 
 
 none 
 
 
 
 3.35 
 
 99.48 
 
 1037 
 
 
 
 0.06 
 
 0.4C 
 
 1.50 
 
 
 53.03 
 
 none 
 
 
 
 
 41.67 
 
 none 
 
 
 1.83 
 
 98.65 
 
 1038 
 
 
 5.40 
 
 1.70 
 
 1.80 
 
 
 48.49 
 
 none 
 
 
 
 38.10 
 
 none 
 
 
 3.00 
 
 98.49 
 
 1039 
 
 
 1.70 
 
 1.70 
 
 1.80 
 
 
 50.00 
 
 
 
 
 39.30 
 
 none 
 
 
 4.40 
 
 98.90 
 
 1040 
 
 
 1.10 
 
 none 
 
 6.25 
 
 
 48.80 
 
 0.84 
 
 
 
 39.06 
 
 none 
 
 
 4.14 
 
 99.19 
 
 1041 
 
 
 1.20 
 
 none 
 
 4.80 
 
 
 50.00 
 
 none 
 
 
 
 S0.3C 
 
 none 
 
 
 4.10 
 
 99.40 
 
 1042 
 
 
 2.70 
 
 none 
 
 3.46 
 
 
 49.70 
 
 none 
 
 
 
 39.05 
 
 none 
 
 
 4.65 
 
 99.46 
 
 1043 
 
 
 1.42 
 0.80 
 
 1.82 
 0.20 
 
 1.60 
 1:20 
 
 
 50.47 
 54.00 
 
 none 
 none 
 
 
 
 
 39.66 
 42.60 
 
 
 
 3.62 
 0.80 
 
 98.39 
 
 1044 
 
 
 
 99.60 
 
 1045 
 
 
 
 0.10 
 0.62 
 0.40 
 1.16 
 
 1.65 
 4.50 
 0.55 
 none 
 
 1.35 
 1.60 
 0.45 
 
 
 
 62.00 
 50.93 
 63.03 
 63.66 
 
 0.29 
 none 
 none 
 none 
 
 
 
 
 
 41.18 
 40.02 
 41.67 
 42.08 
 
 
 
 1.76 
 8.58 
 2.36 
 1.82 
 
 98.33 
 
 1046 
 
 
 
 101.(6 
 
 1047 
 
 
 
 98.45 
 
 1048 
 
 1.95' 
 
 
 
 
 
 100.66 
 
 1M9 
 
 
 1.70 
 1.40 
 1.66 
 1.60 
 
 2.68 
 4.34 
 1.95 
 0.36 
 
 1.18 
 0.52 
 2.21 
 0.44 
 
 
 
 48.66 
 49.90 
 49.35 
 52.87 
 
 0.29 
 0.48 
 0.19 
 none 
 
 
 
 
 
 38.52 
 39.60 
 38.80 
 41.23 
 
 
 
 4.68 
 3.28 
 3.30 
 2.17 
 
 97.51 
 
 1050 
 
 
 
 99.62 
 
 1061 
 
 
 
 0.55 
 
 -— - 
 
 97.46 
 
 1062 
 
 
 
 
 99.12 
 
 1053 
 
 
 1.76 
 
 1.03 
 
 0.57 
 
 
 50.60 
 
 0.6<; 
 
 
 
 
 
 39.76 
 
 0.45 
 
 
 6.65 
 
 100.82 
 
 1054 
 
 
 1.60 
 
 Trace 
 
 2.49 
 
 
 
 63.14 
 
 Tr. 
 
 
 
 40.76 
 
 Trace 
 
 
 2.M 
 
 100.03 
 
 1056 
 
 :"~: 
 
 1.32 
 5.20 
 2.60 
 2.20 
 1.21 
 
 1.06 
 1.02 
 1.50 
 0.50 
 5.45 
 
 Trace 
 
 Trace 
 
 Trace 
 
 1.10 
 
 1.47 
 
 
 55.60 
 61.78 
 63.56 
 63.70 
 47.75 
 
 none 
 none 
 none 
 
 Tr. 
 
 0.17 
 
 
 
 
 41.14 
 41.60 
 42.00 
 41.80 
 36.05 
 
 
 
 
 99.02 
 
 1056 
 
 
 
 
 99.50 
 
 1(B7 
 
 
 
 99.68 
 
 1058 
 
 
 
 
 
 
 
 
 99.30 
 
 1059 
 
 none 
 
 
 6.96 
 
 99.06 
 
 1060 
 
 — 
 
 1.76 
 0.67 
 
 1.03 
 2.64 
 
 0.57 
 0.96 
 
 ---- 
 
 60.60 
 51.27 
 
 
 
 
 39.76 
 37.14 
 
 
 
 6.6.'; 
 5.8f 
 
 99.36 
 
 1061 
 
 none 
 
 
 
 none 
 
 
 98.56 
 
 
 
 
 
 •Sulphur. 
 
182 
 
 University of Texas Bulletin 
 
 Vir. DOLOMITE 
 
 
 
 
 
 
 
 
 
 Loss On 
 
 
 No. 
 
 Silica 
 
 AkOa 
 
 FeiOs 
 
 OaO 
 
 MgO 
 
 0a 
 
 SOs 
 
 ignition 
 
 • Total 
 
 1062 
 
 10.60 
 
 10.60 
 
 1.14 
 
 25.73 
 
 10.61 
 
 35.60 
 
 1.03 
 
 5.70 
 
 100.73 
 
 1063 
 
 0.84 
 
 1.26 
 
 0.91 
 
 31.83 
 
 17.34 
 
 40.30 
 
 1.72 
 
 6.40 
 
 100.69 
 
 1064 
 
 2.30 
 
 3.60 
 
 1.50 
 
 30.98 
 
 17.42 
 
 43.60 
 
 none 
 
 1.70 
 
 101.00 
 
 1065 
 
 1.66 
 
 2.88 
 
 1.82 
 
 30.98 
 
 15.17 
 
 45.00 
 
 0.26 
 
 1.30 
 
 98.97 
 
 1066 
 
 0.66 
 
 1.28 
 
 1.62 
 
 30.90 
 
 18.71 
 
 45.20 
 
 none 
 
 1.90 
 
 100.07 
 
 1067 
 
 .?.32 
 
 12.88 
 
 2.88 
 
 28.62 
 
 10.81 
 
 40.00 
 
 none 
 
 0.68 
 
 99.09 
 
 1068 
 
 S.33 
 
 6.43 
 
 3.18 
 
 29.38 
 
 14.32 
 
 42.00 
 
 none 
 
 3.00 
 
 100.64 
 
 1069 
 
 7.82 
 
 5.38 
 
 2.12 
 
 28.09 
 
 14.29 
 
 87. 75 
 
 none 
 
 S.35 
 
 98.90 
 
 1070 
 
 6.00 
 
 Z.64 
 
 1.96 
 
 30.32 
 
 15.14 
 
 40.47 
 
 none 
 
 4.49 
 
 99.92 
 
 1071 
 
 1.16 
 
 1.45 
 
 0.91 
 
 29.06 
 
 19.83 
 
 44.00 
 
 0.75 
 
 3.06 
 
 100.22 
 
 1072 
 
 0.86 
 
 0.04 
 
 1.22 
 
 37.04 
 
 14.91 
 
 40.07 
 
 0.4* 
 
 6.85 
 
 101.43 
 
 1073 
 
 8.0O 
 
 1.86 
 1.44 
 0.70 
 3.80 
 
 
 1.80 
 
 28.98 
 
 28.89 
 28.99 
 29.66 
 30.20 
 
 20.40 
 
 20.18 
 
 20.21 
 
 20.76 
 
 8.93 
 
 43.70 
 
 44.30 
 45.20 
 44.54 
 40.73 
 
 
 2.46 
 
 2.50 
 2.10 
 3.20 
 4.82 
 
 100.34 
 
 
 
 
 1074 
 
 1. 
 
 0. 
 
 1. 
 
 7.59 
 
 70 
 42 
 20 
 
 2.67 
 
 99.43 
 
 1076 
 
 
 98 35 
 
 1076 
 
 
 
 1077 
 
 1.72 
 
 100.51 
 
 1078 
 
 1.60 
 
 6.44 
 
 0.30 
 
 30.45 
 
 15.92 
 
 43.34 
 
 none 
 
 3.70 
 
 100.66 
 
 1079 
 
 4.00 
 
 5.a 
 
 1.06 
 
 29.66 
 
 15.08 
 
 41.76 
 
 none 
 
 3.44 
 
 100.40 
 
 1060 
 
 4.70 
 
 B.IO 
 
 1.60 
 
 28.25 
 
 16.97 
 
 44.64 
 
 none 
 
 1.42 
 
 101.68 
 
 1081 
 
 12.30 
 
 8.00 
 
 1.60 
 
 25.97 
 
 11.51 
 
 33.06 
 
 none 
 
 6.90 
 
 99.24 
 
 1082 
 
 0.92 
 
 2.36 
 
 0.91 
 
 33.52 
 
 14.82 
 
 39.99 
 
 0.34 
 
 6.01 
 
 98.86 
 
 1083 
 
 3.60 
 6.90 
 
 4.165 
 0.17 
 
 2.37 
 6.19 
 
 1.53 
 0.61 
 
 28.46 
 ^.69 
 
 27.78 
 31.68 
 
 19.66 
 ■ 13.91 
 
 7.60 
 20.31 
 
 41.30 
 28.60 
 
 20.21 
 
 
 3.62 
 5.00 
 
 100.53 
 99.90 
 
 1084 
 
 none 
 
 1065 
 
 3. 
 
 485 
 
 
 1086 
 
 
 
 
 1087 
 
 0.26 
 0.02 
 5.96 
 
 
 
 31.10 
 33.00 
 41.66 
 
 20.60 
 18. B6 
 7.51 
 
 
 
 
 
 1088 
 
 0. 
 2. 
 
 74 
 82 
 
 46.66 
 41.30 
 
 
 
 99.58 
 
 1089 
 
 
 1.24 
 
 100.49 
 
 1090 
 
 1.60 
 
 i 
 
 40 
 
 41.50 
 
 9.00 
 
 42.70 
 
 
 
 99.19 
 
 VIII. KA-OLIN 
 
 No. 
 
 Silica 
 
 Ala 03 
 
 FeaOs 
 
 OaO 
 
 Me © 
 
 K20 
 
 Na2 
 
 CO2 
 
 H20 
 
 (comb) 
 
 H2O 
 
 CHyg.) 
 
 Total 
 
 1091 
 109S 
 
 76.36 
 46.60 
 
 48.41 
 46.04 
 45.52 
 46.00 
 
 17.00 
 33.23 
 
 43.17 
 32.99 
 42.30 
 33.50 
 
 0.46 
 0.60 
 
 2.73 
 
 r.so 
 
 0.61 
 
 ...... 
 
 
 ..._... 
 
 
 
 6.30 
 12.60 
 
 6.06 
 
 8.«! 
 
 13.92 
 
 18.20 
 
 ""I'm 
 
 100.76 
 98.26 
 
 
 0.38 
 
 Trace 
 1.00 
 
 0.10 
 
 "olo 
 
 
 
 ilo 
 
 
 1093 
 1094 
 1095 
 1096 
 
 1. 
 
 78 
 
 99.89 
 BS.45 
 100.74 
 99.60 
 
 
 
 
 
 
 IX. COMMON SALT 
 
 Serial 
 
 
 
 
 
 
 
 
 
 
 
 
 No. 
 
 NaCl 
 
 87.35 
 97.30 
 91.60 
 97.74 
 46.01 
 
 SiO= 
 
 AbOs 
 
 Fes Oa 
 
 Oa 
 1.20 
 
 Mgr 
 
 1.60 
 
 Na 
 
 "Tis 
 
 S Oi 
 
 1.45 
 0.95 
 
 6.72 
 1.20 
 86.08 
 
 01 
 6.60 
 
 H2O 
 1.80 
 
 iToo 
 
 Total 
 100.00 
 
 1097 
 1098 
 
 0.60 
 
 0.60 
 
 Trace 
 Trace 
 
 
 0.10 
 14.87 
 
 i.ei 
 0.20 
 
 99.90 
 
 1099 
 1100 
 
 ""i'.m 
 
 — ---- 
 
 100.24 
 90.66 
 
Chemical Analyses of Texas Bocks and Minerals 183 
 
 X. AOTIYDEITB 
 
 No. 
 
 SiOa 
 
 A]2 Os+Pea Oa 
 
 CaO 
 
 SOa 
 
 Ign. loss 
 
 Total 
 
 OaSOi 
 
 (AnhydritB) 
 
 1101 
 
 1.05 
 
 1.60 
 
 37.18 
 
 53.10 
 
 6.00 
 
 88.98 
 
 90.28 
 
 XI. NOVACULITE 
 
 
 
 
 Iron 
 
 
 Potass'm 
 
 Sodiiim 
 
 Sulphuric 
 
 Loss on 
 
 
 No. 
 
 Silica 
 
 Alumina 
 
 Oxide 
 
 Lime 
 
 Oxide 
 
 Oxide 
 
 Acid 
 
 Ignition 
 
 Total 
 
 1102 
 
 97.32 
 
 0.90 
 
 1.70 
 
 1.19 
 
 0.10 
 
 0.90 
 
 0.28 
 
 0.00 
 
 102.39 
 
 1103 
 
 97.80 
 
 1.07 
 
 0.53 
 
 0.83 
 
 0.43 
 
 0.13 
 
 0.41 
 
 
 101.20 
 
 nw 
 
 97.00 
 
 1.18 
 
 1.02 
 
 0.71 
 
 0.34 
 
 0.70 
 
 0.65 
 
 0.06 
 
 101.65 
 
 1106 
 
 96.80 
 
 1.18 
 
 1.02 
 
 0.71 
 
 0.14 
 
 0.94 
 
 0.28 
 
 0.02 
 
 101.09 
 
 XII. PHOSPHATIO EOOK 
 
 No. 
 
 Silica 
 
 Alumi. 
 
 Iron 
 Oxide 
 
 Lime 
 
 M'gnes. 
 
 CO: 
 
 SOa 
 
 PaOs 
 
 Bone 
 Phos. 
 
 Loss 
 Ignit'n 
 
 Total 
 
 1106 
 
 7.50 
 43.39 
 
 31.03 
 
 4.S8 
 
 18.08 
 31.34 
 
 none 
 
 4.60 
 
 1.76 
 
 18.19 
 0.60 
 1.70 
 6.03 
 3.09 
 2.38 
 3.22 
 3.07 
 4.0O 
 2.73 
 4.32 
 2.60 
 3.70 
 3.97 
 0.25 
 
 iTso 
 
 12.60 
 
 98.34 
 
 1108 
 
 
 
 
 
 1109 
 
 
 
 
 
 
 
 
 ""e'.n 
 
 6.19 
 7.02 
 6.70 
 8.73 
 5.96 
 9.43 
 6.67 
 8.07 
 8.67 
 0.54 
 
 
 
 1110 
 
 
 
 
 
 
 
 
 
 1111 
 
 
 
 
 ft 
 
 
 
 
 
 
 
 
 1112 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 1114 
 
 
 
 
 
 
 
 
 
 
 
 , 
 
 
 
 
 
 
 
 1116 
 
 
 
 
 
 
 
 
 ------- 
 
 
 1117 
 
 
 
 
 
 
 
 
 
 1118 
 1119 
 
 
 
 
 
 
 
 
 
 
 
 _ — . 
 
 1120 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
184 
 
 University of Texas Bulletin 
 
 xni. ASPHALT BOOK 
 
 o 
 
 S5 
 
 1 
 
 ■a 
 
 s " 
 
 1 
 
 
 a 
 
 , ll 
 oo 
 
 sS 
 
 55 
 
 1 
 
 B 
 
 O 
 
 s 
 
 II 
 
 o 
 
 II 
 
 1121 
 
 11.25 
 0.92 
 2.35 
 
 Trace 
 7.76 
 1.90 
 0.46 
 
 Trace 
 1.23 
 0.82 
 2.46 
 
 Trace 
 3.00 
 
 7.12 
 
 12.09 
 
 16.52 
 
 5.82 
 
 0.65 
 
 6.75 
 
 8.40 
 
 5.31 
 
 7.43 
 
 4.92 
 
 14.17 
 
 10.18 
 
 10.10 
 
 6.24 
 
 20.14 
 
 23.34 
 
 17.44 
 
 8.17 
 
 0.65 
 
 14.. 51 
 
 10.30 
 
 5.76 
 
 7.43 
 
 6.15 
 
 14.99 
 
 12.64 
 
 10.10 
 
 9.24 
 
 27.26 
 98.24 
 10.60 
 lO.OO 
 
 2.10 
 
 1.82 
 10.35 
 30.96 
 10.68 
 15.99 
 
 9.47 
 10.20 
 11.37 
 
 8.86 
 14.81 
 16.01 
 14.00 
 14.40 
 
 none 
 0.96 
 Trae« 
 
 88.54 
 18.33 
 RS.20 
 0.56 
 
 none 
 Trace 
 
 TiSKX! 
 
 76.71 
 SI. 60 
 91.S2 
 10.81 
 4.16 
 1.50 
 03.68 
 
 ^^85 
 87.36 
 
 sSrio 
 
 0.43 
 
 _ 
 
 
 
 
 1122 
 
 0.61 
 0.18 
 
 
 
 
 
 1123 
 
 
 
 
 
 1124 
 
 0.03S 
 
 0.22 
 
 
 
 
 
 1125 
 
 
 
 
 
 1126 
 1127 
 1128 
 1129 
 
 0.23 
 0.14 
 1.00 
 0.74 
 2.3S 
 0.92 
 
 
 
 _. 
 
 . 
 
 
 
 1130 
 
 
 
 
 
 1131 
 
 
 
 
 
 '1132 
 1133 
 
 0.50 
 0.30 
 
 0.15 
 
 — 
 
 ""0?32 
 
 il44 
 
 
 
 1131 
 1136 
 
 72, 
 
 74 
 
 
 1186 
 1137 
 
 3.60 
 1.20 
 0.20 
 0.60 
 1.35 
 1.46 
 1.68 
 8.29 
 4.19 
 5.08 
 6.31 
 3.31 
 7.68 
 6.73 
 7.00 
 5.40 
 
 7.00 
 8.80 
 1.90 
 1.22 
 9.00 
 9.50 
 9.10 
 7.70 
 5.28 
 5.12 
 6.07 
 5.46 
 7.13 
 9.28 
 7.00 
 9.00 
 
 Trace 
 3.00 
 28.10 
 12.14 
 
 Trace 
 
 Trace 
 
 Trace 
 83.45 
 11.24 
 7.69 
 85.44 
 14.80 
 
 £9.20 
 
 sr.oo 
 
 69.80 
 86.04 
 8.9.65 
 89.04 
 89.. q2 
 . 0.66 
 79.27 
 
 0.48 
 0.60 
 0.19 
 0.20 
 
 — 
 
 
 
 1138 
 
 
 
 
 
 1139 
 
 lUO 
 
 
 
 
 
 
 iia 
 
 0.24 
 0.22 
 
 
 
 
 
 1142 
 1143 
 
 
 
 
 
 
 
 1144 
 
 0.91 
 
 
 
 
 
 1145 
 1146 
 1147 
 
 
 
 
 
 
 
 82.11 
 3.18 
 70.44 
 
 1148 
 
 84.91 
 78.73 
 83.00 
 
 iToo 
 
 
 
 
 
 0.28 
 
 1149 
 1150 
 
 1.50 
 0.17 
 
 "lis 
 
 
 
 
 
 6.26 
 
 1151 
 
 
 
 
 
 
 
 
 
 
 
 B. IGNEOUS EOCK 
 
 Serial No 
 
 1152 
 
 1153 
 
 1154 
 
 1155 
 
 1156 
 
 1157 
 
 1168 
 
 1159 
 
 1160 
 
 1161 
 
 1162 
 
 1163 
 
 Si Oz — 
 
 12.27 
 6.09 
 
 19.32 
 7.12 
 
 26.90 
 14.34 
 
 35.76 
 18.65 
 
 37.96 
 
 10.14 
 
 3.69 
 
 7.59 
 
 14.69 
 
 16.28 
 
 2,18 
 
 0.69 
 
 0.R9 
 
 1.82 
 
 2.93 
 
 1.13 
 
 none 
 
 0.08 
 
 0.04 
 
 0.22 
 
 0.05 
 
 0.06 
 
 Trace 
 
 0.04 
 
 0.03 
 
 88.00 
 26.76 
 14.36 
 
 38.35 
 9.^8 
 20.32 
 
 39.00 
 30.89 
 10.71 
 
 40.32 
 9.46 
 4.75 
 7.48 
 18.12 
 10.55 
 2.62 
 1.10 
 0.57 
 1.26 
 2.66 
 0.68 
 
 41.48 
 20.85 
 13.50 
 
 6.79 
 3.21 
 1.42 
 
 2.07 
 
 41.95 
 24.74 
 11.98 
 
 ""2"23 
 9.66 
 3.74 
 1.16 
 
 'T29 
 1.04 
 
 42.20 
 
 Ah Os 
 
 Fe" Os 
 
 19.41 
 7 9S 
 
 
 2.83 
 6.48 
 1.46 
 2.39 
 0.93 
 
 3.16 
 6.52 
 7.75 
 2.11 
 0.67 
 
 0.60 
 
 "b'.m 
 
 8.32 
 1.22 
 
 10.27 
 11.26 
 12.52 
 5.42 
 1.13 
 
 6.15 
 
 McrO . 
 
 OaO 
 
 "14789 
 2.32 
 0.64 
 
 13.78 
 11.76 
 2.77 
 2.02 
 
 1.43 
 12.37 
 1.77 
 0.74 
 
 3.60 
 10 14 
 
 Nai - 
 
 4.07 
 
 Kz 
 
 0.62 
 
 
 
 
 "o.m 
 
 Trace 
 1.13 
 
 "oai 
 
 ---- 
 
 
 
 
 
 Ti Oa 
 
 P2 Os 
 
 
 
 
 
 
 
 1.00 
 1.76 
 
 
 
 
 
 
 
 
 
 
 
 0.06 
 0.25 
 O.OS 
 0.06 
 Trace 
 0.01 
 0.03 
 
 0.21 
 
 "oris 
 
 
 NI Qz 
 
 
 
 
 
 
 Mn 
 
 
 
 
 
 
 
 
 
 SI 
 
 
 
 
 
 
 
 Ba O 
 
 
 
 
 
 
 
 
 
 
 
 
 " 
 
 Li 
 
 
 
 
 
 
 
 
 
 
 g 
 
 
 
 
 
 ""s^2 
 3.90 
 
 none 
 
 "o'ii 
 
 1.19 
 none 
 
 
 SOs 
 
 Hb O (-) Hyg 
 Hz O (+) Oom 
 Mnz Oi 
 
 01 
 
 
 
 
 
 ----- 
 
 1.85 
 
 0.82 
 
 
 
 1.87 
 
 0.55 
 30 
 
 
 
 
 
 
 STace 
 0.07 
 
 
 
 
 
 'Tos 
 
 0.04 
 
 1.66 
 1.20 
 
 P 
 
 
 
 
 
 ----- 
 
 "o?i6 
 
 2.65 
 
 
 
 
 
 Oz 
 
 
 
 
 ~'™"' 
 
 Loss on ignlt'D 
 
 
 
 1.76 
 
 1.20 
 
 2.60 
 
 
 
 
 
 
 
 
 
 
 Total 
 
 
 
 
 
 — 
 
 
 100.13 
 
 99.55 
 
 99.38 
 
 100.88 
 
 100.09 
 
 100.29 
 
 
 100.39 
 
Chemical Analyses of Texas Bocks and Minerals 185 
 IGiSfEOUS EOCK (Continued) 
 
 Serial No 
 
 1164 
 
 1166 
 
 1166 
 
 1167 
 
 1168 
 
 1169 
 
 1170 
 
 1171 
 
 1172 
 
 1173 
 
 1174 
 
 117S 
 
 SIO2 
 
 AlaOa 
 
 Pe2 O3 
 
 43.26 
 14.73 
 5.35 
 7.22 
 0.58 
 9.88 
 1.60 
 0.24 
 
 43.65 
 26.96 
 12. K 
 
 'Too 
 
 9.76 
 2.81 
 0.73 
 
 44.66 
 16.80 
 4.31 
 6.75 
 2.22 
 7.20 
 4.98 
 1.90 
 
 45.11 
 12.44 
 .2.67 
 9.36 
 11.66 
 
 lo.ei 
 
 3.05 
 1.01 
 0.16 
 0.78 
 2.34 
 0.61 
 
 46.60 
 24.43 
 
 6.70 
 2.12 
 2.96 
 6.13 
 S.12 
 
 "i'.li 
 "0.7s 
 
 48.13 
 18.44 
 3.41 
 4.30 
 3.06 
 5.89 
 8.00 
 3.80 
 0.18 
 1.59 
 1.74 
 0.49 
 0.05 
 none 
 0.02 
 0.19 
 0.10 
 0.10 
 Trsce 
 0.09 
 
 ""0T29 
 0.06 
 
 43.23 
 
 17.43 
 
 2.77 
 
 5.92 
 
 2.99 
 
 6.38 
 
 6.87 
 
 2.78 
 
 0.64 
 
 2.84 
 
 2.00 
 
 0.69 
 
 0.04 
 
 none 
 
 Trace 
 
 0.18 
 
 0.08 
 
 0.08 
 
 Trace 
 
 0.08 
 
 ""oToi 
 
 undet 
 
 45.86 
 16.60 
 2.96 
 8.03 
 0.54 
 8.84 
 4.68 
 I1.74 
 
 60.20 
 19.98 
 12.62 
 
 "o'.is 
 
 4.07 
 4.67 
 3.29 
 
 60.92 
 14.61 
 4.46 
 6.35 
 1.19 
 10.14 
 3.78 
 0.32 
 
 51.20 
 16.35 
 4.01 
 6.15 
 2.68 
 8.37 
 3.38 
 0.62 
 
 51.54 
 16.52 
 10.06 
 
 PeO 
 
 MgO 
 
 Ca 
 
 2.98 
 
 Na2 
 
 1.28 
 
 Ka 
 
 9.03 
 
 H2 below IW 
 
 
 H2O above 100* 
 
 
 
 
 
 
 Ti O2 
 
 1.60 
 4.63 
 4.70 
 
 Trace 
 1.08 
 
 2.00 
 
 2.42 
 
 1.00 
 2.64 
 2.76 
 
 1.45 
 1.44 
 
 1.39 
 
 2.80 
 
 0.80 
 1.40 
 
 0.08 
 
 P2 O5 
 
 Zr O2 — 
 
 Trace 
 
 012 O3 
 
 
 
 
 
 
 Ni 
 
 0.24 
 0.98 
 
 0.98 
 
 
 0.04 
 0.22 
 Trace 
 Trace 
 none 
 0.01 
 
 0.11 
 undet 
 
 0.56 
 
 "oTie 
 0.44 
 
 3.10 
 
 0.80 
 1.77 
 
 
 
 
 
 Mn 
 
 Trace 
 
 0.74 
 
 
 
 Sr 
 
 
 
 
 
 Ba - 
 
 
 
 
 
 
 
 
 
 Li 
 
 
 
 
 
 
 
 
 
 S 
 
 
 
 
 
 
 
 
 
 SO3 
 
 
 
 0.65 
 0.60 
 4. SO 
 2.00 
 
 "0T26 
 1.40 
 
 "T37 
 1.48 
 
 Sace 
 
 "olo 
 
 4.20 
 
 0.45 
 0.90 
 1.40 
 2.60 
 
 0.60 
 
 H2 (-) Hyg 
 H2 (+) com 
 Mn3 Oi 
 
 "l"oo 
 
 0.27 
 0.48 
 
 1.60 
 3.40 
 
 01 
 
 
 0.16 
 
 
 P 
 
 
 
 OO2 
 
 
 
 
 
 
 
 
 
 Loss on ignit'n 
 Va Os 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0.04 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Total 
 
 100.13 
 
 59.82 
 
 100.41 
 
 100.02 
 
 100.10 
 
 99.93 
 
 99.97 
 
 99.61 
 
 99.72 
 
 100.19 
 
 100.21 
 
 99.90 
 
 IGNEOUS ROCK (Continued) 
 
 Serial No 
 
 1176 
 
 1177 
 
 1178 
 
 1179 
 
 1180 
 
 1181 
 
 1182 
 
 1183 
 
 1184 
 
 1186 
 
 1186 
 
 1187 
 
 Si O2 - — 
 
 53.30 
 , 7.59 
 
 14.43 
 2.68 
 0.67 
 2.86 
 4.37 
 5.04 
 
 "6^50 
 1.47 
 
 53.34 
 17.92 
 2.27 
 5.51 
 1.40 
 4.19 
 6.41 
 4.32 
 0.58 
 2.08 
 1.60 
 0.44 
 Trace 
 
 53.42 
 9.17 
 2.33 
 
 0.30 
 17.15 
 
 54.42 
 20.76 
 2.C4 
 1.33 
 0.22 
 1.34 
 10.41 
 4.89 
 0.22 
 2.50 
 0.40 
 0.11 
 0.16 
 none 
 none 
 0.16 
 
 66.10 
 21.24 
 7.01 
 
 "o.m 
 
 2.69 
 6.67 
 6.27 
 
 67.20 
 16.72 
 7.09 
 none 
 0.27 
 1.92 
 2.51 
 7.67 
 
 58.86 
 20.32 
 8.43 
 
 "o'.li 
 
 7.19 
 3.24 
 0.67 
 
 68.90 
 17.08 
 4.16 
 1.34 
 0.18 
 1.66 
 5.48 
 3.73 
 
 69.48 
 13.16 
 
 6.n 
 
 59.84 
 
 19.94 
 
 8.61 
 
 69.36 
 18.29 
 6.19 
 
 59.63 
 
 A12 03 
 
 Pea O3 
 
 Pe 
 
 12.25 
 7.66 
 
 Mg - - 
 
 1.64 
 1.83 
 11.67 
 6.03 
 0.20 
 
 0.62 
 2.23 
 3.84 
 2.62 
 
 0.15 
 1.64 
 5.99 
 5.28 
 
 0.21 
 
 Ca 
 
 2.05 
 
 Na2 
 
 K2O 
 
 H2O below lOO- 
 Ha abovelOO" 
 Ti O2 
 
 6.46 
 4.06 
 
 
 
 
 
 
 0.22 
 Trace 
 
 "i.m 
 
 1.22 
 4.88 
 
 0.17 
 0.77 
 
 
 
 0.45 
 0.66 
 
 Trace 
 Trace 
 
 0.78 
 
 P2 Os - - 
 
 0.38 
 
 Zr O2 
 
 
 
 
 
 
 
 
 
 0.31 
 
 iizii: 
 
 0.39 
 
 
 
 
 
 
 MnO 
 
 
 
 0.17 
 O.06 
 0.0^ 
 Trace 
 0.03 
 
 
 
 
 
 Trace 
 
 Trace 
 
 0.12 
 
 Trace 
 
 Trace 
 0.04 
 
 Trace 
 0.0: 
 
 
 Ba 
 
 
 
 
 
 
 
 
 
 
 
 Li 
 
 
 —- -- 
 
 
 
 
 
 
 
 
 s 
 
 
 
 S O3 
 
 1.50 
 0.60 
 2.64 
 2.50 
 
 
 0.41 
 C.SC 
 1.50 
 2.60 
 
 "0T44 
 0.95 
 
 l.K 
 0.40 
 2.20 
 2.46 
 
 
 
 "Tio 
 
 1.33 
 
 "i'.v 
 0.22 
 
 
 Ha {— ) Hyg 
 Ha (+) com. 
 Mns 04 
 
 
 0.22 
 1.02 
 
 "0.23 
 none 
 
 0.17 
 0.62 
 
 Trace 
 
 0.26 
 0.84 
 
 
 Trace 
 
 O.Sl 
 
 Trace 
 
 p 
 
 
 
 
 
 
 
 
 
 
 
 
 O2 
 
 
 Trace 
 
 16.00 
 
 
 Loss on ignit'n 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0.05 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Total 
 
 100. f« 
 
 ino.46 
 
 99.51 
 
 99.82 
 
 100.53 
 
 99.68 
 
 100.21 
 
 100.31 
 
 101.19 
 
 99.63 
 
 99.72 
 
 •9.69 
 
 
 
 
186 
 
 University of Texas Bulletin 
 IGNEOUS ROCK (Continued) 
 
 Serial Nc>. -,... 
 
 1188 
 
 1189 
 
 1190 
 
 1191 
 
 1192 
 
 1193 
 
 1194 
 
 1196 
 
 1196 
 
 1197 
 
 1198 
 
 1199 
 
 Si Oa -. - - - 
 
 Ala 03 - 
 
 Pe2 Os 
 
 61.04 
 
 14.86 
 
 5.50 
 
 60.10 
 
 16.31 
 
 5.96 
 
 "To? 
 
 1.B6 
 7.59 
 4.90 
 
 61.40 
 16.53 
 0.89 
 
 3.48 
 0.14 
 0.88 
 8.74 
 { 6.50 
 
 62.18 
 17.70 
 1.69 
 2.64 
 
 "I'.sa 
 
 6.31 
 3.77 
 
 62.30 
 9.07 
 2.97 
 
 "rt'li 
 
 7.80 
 1.39 
 3.19 
 
 62.46 
 17.10 
 2.49 
 2.65 
 0.28 
 1.27 
 e.84 
 5.44 
 0.16 
 0.49 
 0.38 
 0.11 
 0.10 
 
 63.24 
 14.96 
 7.20 
 
 63.90 
 16.11 
 4.46 
 
 63.30 
 11.07 
 4.46 
 4.01 
 0.36 
 1.66 
 7.65 
 4.65 
 
 63.73 
 
 "sTis 
 
 5.94 
 2.74 
 
 64.10 
 20.80 
 0.30 
 2.43 
 
 ~i'.¥> 
 
 5.0?. 
 3.49 
 
 64.46 
 15.U 
 4.23 
 
 FeO 
 
 Mg '- 
 
 none 
 
 
 
 CaO - 
 
 Nas - . „ 
 
 1.46 
 6.19 
 3.10 
 
 1.02 
 
 . 4.62 
 
 5.91 
 
 1.66 
 6.13 
 4.59 
 
 1.66 
 6.69 
 4.53 
 
 Ka - — 
 
 Ha belowlCO" 
 
 Ha above 100° 
 
 
 
 
 
 
 
 Ti Oa 
 
 
 0.19 
 
 0.83 
 
 1.4S 
 
 0.50 
 
 0.55 f« 
 
 'H.n 
 
 0.85 
 
 
 
 
 Pa 06 
 
 
 0.25 
 
 "h'.'d 
 
 
 Zr Oa - 
 
 
 1.85 
 
 0.35 
 
 
 
 
 
 
 
 Cra Oa 
 
 
 
 
 
 NiO 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Mn - 
 
 
 
 0.74 
 
 0.9S 
 
 
 
 0.93 
 
 0.18 
 none 
 none 
 Trace 
 
 0.26 
 
 0.65 
 
 0.65 
 
 
 
 
 SrO - 
 
 
 
 
 Ba 
 
 
 0.13 
 
 0.13 
 
 
 
 
 
 Trace 
 
 0.26 
 
 
 
 
 
 
 
 
 Li 
 
 
 — 
 
 S 
 
 "6^58 
 3.30 
 1.62 
 2.26 
 
 6^9 
 0.16 
 1.10 
 
 0.10 
 
 0.40 
 0.74 
 2.50 
 
 "1776 
 8.10 
 
 
 S Os 
 
 
 ""olsi 
 1.08 
 
 0.76 
 0.46 
 0.88 
 
 0.80 
 
 
 
 0.75 
 0.62 
 O.90 
 0.54 
 
 0.89 
 
 HaO (— ) hyg- 
 Ha (+) com. 
 Mns 0* 
 
 0.62 
 0.72. 
 
 01 . — 
 
 
 
 
 Trace 
 
 
 
 
 ~~ 
 
 !• 
 
 
 
 
 
 
 
 
 
 Oa 
 
 
 
 
 
 
 Tr(?) 
 0.03 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Va Ob - — 
 
 — .... 
 
 
 
 
 
 
 
 
 Rare earths — 
 
 
 
 
 
 
 
 
 
 
 
 Total 
 
 99.83 
 
 100.84 
 
 100.10 
 
 99.96 
 
 100.12 
 
 99.97 
 
 100.41 
 
 99.86 
 
 lflO.47 
 
 
 loo.ie 
 
 100.93 
 
 IGNEOUS ROCK (Continued) 
 
 Serial No. 
 
 1200 
 
 1201 
 
 1208 
 
 1203 
 
 1204 
 
 1205 
 
 1206 
 
 1207 
 
 1208 
 
 1209 
 
 1210 
 
 12U 
 
 SlOa 
 
 Ala Os 
 
 64.51 
 16.76 
 2.05 
 1.00 
 0.60 
 1.38 
 6.08 
 5.74 
 0.31 
 0.46 
 0.75 
 0.14 
 
 65.47 
 17.93 
 2.15 
 0.43 
 0.06 
 1.10 
 6.21 
 5.21 
 0.19 
 0.41 
 0.29 
 . 0.19 
 0.07 
 
 Trace 
 
 Trace 
 
 0.16 
 
 66.50 
 
 18.44 
 
 3.27 
 
 0.81 
 
 ~"o'.!» 
 6.28 
 S.57 
 
 Trace 
 
 68.25 
 
 is.eo 
 
 3.66 
 1,43 
 0.02 
 0.54 
 6.52 
 4.73 
 0.16 
 0.32 
 0.26 
 0.02 
 0.25 
 
 "T04 
 Trace 
 
 Trace 
 Trace 
 Trace 
 
 68.32 
 15.82 
 
 , , 4.18 
 
 Trace 
 0.78 
 4.02 
 4.41 
 
 68.71 
 13.45 
 5.31 
 0.75 
 0.19 
 0.96 
 4.63 
 6.S1 
 
 69.00 
 
 17.12 
 
 2.45 
 
 Trace 
 0.71 
 6.63 
 2.24 
 
 69.30 
 13.40 
 5.60 
 
 none 
 0.66 
 4.46 
 6.40 
 
 70.20 
 17.36 
 .1.32 
 1.90 
 0.20 
 1.4S 
 4.30 
 2.90 
 
 71.10 
 
 11.39 
 
 5.38 
 
 ""i"54 
 0.08 
 3.95 
 6.37 
 
 71.20 
 15.04 
 1.10 
 2. 96 
 
 '"ir04 
 3.73 
 3.64 
 
 72.51 
 15.00 
 
 Tea Os 
 
 FeO 
 
 0.81 
 
 Mg O 
 
 Oa 
 
 0.83 
 0.60 
 
 Naa 
 
 0.33 
 
 KaO - 
 
 Ha below lOO" 
 
 Trace 
 
 
 
 
 
 
 0.70 
 
 "oloe 
 
 0.44 
 0.57 
 0.16 
 
 'T09 
 
 8.31 
 
 TiO^a 
 
 PaOs 
 
 Zr Oa . - 
 
 0.54 
 0.57 
 
 ""oTw 
 
 Trace 
 
 0.21 
 0.04 
 
 0.14 
 
 none 
 
 0.23 
 0.46 
 
 ""o^ie 
 
 0.45 
 0.29 
 
 0.52 
 
 
 
 Ora Os 
 
 NiO .... 
 
 Mn O 
 
 ""6121 
 
 
 
 
 
 
 Trace 
 
 
 
 
 
 
 SrO 
 
 
 Ba 
 
 
 None 
 none 
 
 
 
 
 
 
 
 
 
 Li O 
 
 
 
 Trace 
 
 Trace 
 
 
 
 Trace 
 
 0.60 
 0.36 
 0.26 
 
 
 
 
 
 0.05 
 0.13 
 0.36 
 
 
 
 
 
 0.52 
 0.40 
 0.30 
 0.70 
 
 
 HaO (-) hyg_ 
 Ha (+) com. 
 Mns Oi 
 
 
 
 
 
 0.19 
 
 0.61 
 
 0.27 
 0.86 
 
 0.21 
 0.49 
 
 
 
 
 
 
 
 
 
 
 
 
 01 
 
 0.04 
 
 
 
 
 
 
 
 
 
 Trace 
 
 Trace 
 
 None 
 Trace 
 
 
 
 
 
 
 
 Trace 
 
 
 Trace 
 
 
 
 
 
 
 
 
 Loss on ignit'n 
 VaOs 
 
 
 
 
 
 
 0.05 
 
 
 "a.w, 
 
 ----- 
 
 
 
 
 
 
 
 
 
 
 
 
 
 -. 
 
 
 
 
 
 Trace 
 
 
 
 
 Hydrous Si 
 
 
 
 
 
 
 13.72 
 2.07 
 
 
 
 
 _ 
 
 
 
 
 
 
 
 
 
 Total 
 
 100.02 
 
 99.92 
 
 99.97 
 
 99.88 
 
 100.30 
 
 100.44 
 
 100.33 
 
 100.25 
 
 100.40 
 
 100.92 
 
 100.72 
 
 98.41 
 
 
 
 
Chemical Analyses of Texas Bocks and Minerals 187 
 IGNEOUS ROCK (Continued) 
 
 Serial No. — . 
 
 1212 
 
 1213 
 
 1214 
 
 1215 
 
 1216 
 
 1217 
 
 1218 
 
 1219 
 
 1220 
 
 1221 
 
 1222 
 
 1223 
 
 Si O2 
 
 V2.80 
 15.40 
 2.15 
 
 73.35 
 14.38 
 1.96 
 
 73.76 
 
 74.00 
 14.00 
 1.00 
 
 74.80 
 7.4S 
 9.00 
 
 74.90 
 11.10 
 1.60 
 
 72.86 
 11.74 
 2.71 
 0.51 
 1.66 
 0.06 
 0.24 
 4.63 
 4.92 
 0.40 
 0.20 
 Trace 
 0.28 
 
 74.85 
 12.83 
 1.40 
 0.24 
 0.37 
 0.04 
 0.48 
 4.24 
 6.12 
 0.30 
 0.15 
 Trace 
 0.09 
 
 75.12 
 10.94 
 2.88 
 0.18 
 0.86 
 0.07 
 0.20 
 4.46 
 4.64 
 0.19 
 0.20 
 None 
 0.13 
 
 75. SO 
 5.58 
 1.78 
 
 "i'.ca 
 "e'.il 
 
 2.51 
 1.69 
 
 Trace 
 
 76.30 
 11.63 
 1.83 
 0.19 
 0.76 
 0.03 
 0.16 
 4.01 
 4.70 
 0.34 
 0.16 
 None 
 0.11 
 
 76. S4 
 
 AI2O3 
 
 res Os 
 
 
 PeO 
 
 Mg 
 
 0.40 
 1.00 
 1.60 
 2. TO 
 2.30 
 0.45 
 
 0.34 
 0.09 
 0.26 
 4.33 
 6.66 
 
 "o'si 
 
 3.64 
 5.66 
 
 Trace 
 
 Trace 
 
 e.20 
 
 3.90 
 
 Trace 
 
 None 
 1.36 
 
 1.50 
 
 "o'.ia 
 
 S.60 
 
 Trace 
 
 0.30 
 
 0.50 
 
 
 CaO - — . 
 
 0.77 
 
 NazO 
 
 Kj 
 
 2.88 
 6.76 
 
 
 
 Ti O2 
 
 
 
 
 Pa Ob 
 
 0.05 
 
 
 
 Trace 
 
 
 
 Zr O2 
 
 
 
 
 Ci" O3 
 
 
 
 
 
 
 
 
 NiO 
 
 
 
 
 
 
 
 
 
 
 
 
 
 MnO 
 
 SrO . - . 
 
 
 
 
 
 
 
 -*-— 
 
 1.90 
 
 0.07 
 None 
 None 
 Trace 
 Trace 
 
 Trace 
 None 
 None 
 Trace 
 Trace 
 
 0.08 
 None 
 None 
 Trace 
 
 0.05 
 None 
 
 "6?92 
 0.20 
 4.90 
 
 Trace 
 None 
 None 
 Trace 
 Trace 
 
 
 
 Ba 
 
 
 
 
 
 
 
 
 Li 
 
 
 
 
 
 
 
 
 8 
 
 
 
 
 
 
 
 
 S Os 
 
 
 
 
 
 
 
 ~ 
 
 Ha (— ) hyg. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 H2 (+) com 
 
 
 
 Mna Oil 
 
 
 
 
 
 
 
 
 
 
 
 
 01 
 
 
 
 
 
 
 
 
 
 
 
 
 
 !■ 
 
 None 
 None 
 
 
 
 None 
 None 
 
 
 
 
 
 
 
 
 
 eo» 
 
 
 
 
 
 Trace 
 
 Trace 
 
 O.W 
 
 
 Trace 
 
 
 loss on Ignit'D 
 
 
 
 
 V2 Ob 
 
 
 
 
 
 
 
 
 
 
 0.02 
 
 
 
 
 
 
 
 
 
 0.05 
 
 0.07 
 
 0.04 
 
 
 
 
 Mn O2 
 
 Trace 
 
 
 
 Trace 
 
 
 
 
 
 
 
 
 1 " 
 
 
 Total 
 
 98.85 
 
 100.37 
 
 
 99.10 
 
 92.64 
 
 
 100.33 
 
 100.18 
 
 99.98 
 
 99.99 
 
 100.14 
 
 
 IGNEOUS ROCK (Continued) 
 
 Serial No. 
 
 1224 
 
 1235 
 
 1226 
 
 1227 
 
 1228 
 
 1229 
 
 1230 
 
 1231 
 
 
 
 Si O2 
 
 76.45 
 
 11.73 
 
 2.90 
 
 78.00 
 12.35 
 1.30 
 None 
 0.60 
 0.15 
 3.40 
 4.34 
 
 82.44 
 5.41 
 0.80 
 1.87 
 
 'lie 
 
 3.90 
 2.52 
 
 60.90 
 16.20 
 2,60 
 4.20 
 0.90 
 4.50 
 6.R0 
 2.75 
 0.40 
 
 ei.40 
 
 16.85 
 
 2.2.=; 
 
 3.20 
 0.60 
 4.20 
 6.75 
 2.70 
 0.50 
 
 39.92 
 
 8.60 
 
 4.40 
 
 ■ 8.00 
 
 20.17 
 
 10.68 
 
 1.91 
 
 1.03 
 
 .43 
 
 1.45 
 
 2.70 
 
 .51 
 
 None 
 
 .14 
 
 0.04 
 
 .06 
 
 .24 
 
 .04 
 
 .06 
 
 Trace 
 
 Trace 
 
 12.00 
 5.15 
 
 "iris 
 
 7.16 
 
 1.33 
 
 1.77 
 
 .77 
 
 (?•) 
 
 (?) 
 
 "".sl 
 
 45 23 
 
 Alo 0.1 
 
 VS2 Os 
 
 Pe — 
 
 7.73 
 2.95 
 4.07 
 
 Ca i::i:r"'ziiiiir"::r":i;:::::::: 
 
 Na- - 
 
 Trace 
 1.34 
 5.03 
 1.55 
 
 12.25 
 
 23.37 
 
 .47 
 
 R, 
 
 .12 
 
 H2 telow 100° 
 
 .37 
 
 H2 above lOO" 
 
 Tl O2 
 
 ""o'ii 
 
 Trace 
 
 0.20 
 
 ""o'69 
 
 4.28 
 
 P2 Os 
 
 Zr On I 
 
 0.09 
 
 0.08 
 
 None 
 
 Ctz Os - - 
 
 
 
 T" Os — 
 
 
 
 NIO „ 
 
 
 
 
 
 
 
 
 .05 
 
 Mn — - 
 
 0.17 
 
 
 
 
 
 .07 
 
 SrO 
 
 
 
 
 
 
 
 BaO 
 
 
 
 
 
 
 LiaO — 
 
 Trace 
 
 
 
 "o.ea 
 
 0.16 
 
 0.94 
 
 
 
 
 
 Trace 
 
 SOs — 
 
 
 
 Ha f 1 Hve — 
 
 0.02 
 0.94 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Trace 
 
 
 
 
 
 Trace 
 .07 
 
 
 
 
 None 
 None 
 
 ------ 
 
 . 
 
 --— 
 
 
 
 OO2 
 
 
 ------ 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Trace 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Total 
 
 Less Oxyeen 
 
 100.54 
 
 100.38 
 
 100.38 
 
 99.04 
 
 98.43 
 
 100.45 
 .03 
 
 32.07 
 
 100.98 
 
 
 100.42 
 
 
188 
 
 University of Texas Bulletin 
 
 
 I-* 
 
 13.20 
 
 , 40.66 
 
 1.70 
 
 6.20 
 
 3.06 
 
 None 
 
 Trace 
 
 3&.&» 
 0.25 
 0.60 
 None 
 None 
 None 
 
 S 
 
 i 
 
 
 1 
 
 I-H 
 
 
 S 
 
 s 
 
 
 1 
 
 |gS§ igSft 1 Ig 13 
 
 s 
 
 8 
 
 
 i 
 
 |g33S IdSS 1 18 IS 
 
 (ddd IrHOr-J 1 irH ' CO 
 
 
 
 i 
 
 iScO 1JC- l»Ofl 1 IS 1 IS 
 
 i 
 
 
 ® 
 
 lOO'a'rt 1 li> 1 1 irt 1 I-* 
 
 IS'^'^' 1 IS 1 i is3 i 1" 
 
 -* 
 
 S 
 
 
 Ta 
 S 
 % 
 
 ISS3 I l§§ IgS IS 
 i^^^" 1 Ig'^ 18 !« 
 1 III 1 
 
 s 
 
 1 
 
 
 IE; 1^ 1 ISS S 1 1 
 \° \° S° S i i 
 
 CO 
 CD 
 
 8 
 
 s 1 
 
 P-i 03 
 
 O f 
 
 i-H 
 
 i" i« i m iS. 1 i i 
 
 1= => 1 iffie IS 1 1 1 
 
 1 1 1 ^ 1 1 1 1 
 1 II 1 1 1 I 
 
 S 
 
 8 
 
 03 
 
 0.22 
 
 2.60 
 
 0.30 
 
 0.16 
 
 None 
 
 None 
 
 38.00 
 
 13.00 
 
 0.60 
 
 1.40 
 
 43.24 
 
 None 
 
 None 
 
 
 C. METAP 
 
 Marble 12 
 
 1 
 
 IS^g 1 IgS 1 13 IS 
 
 d 
 
 rH 
 
 ISS& j IS j j IS ISS 
 
 1 i ! II 1 
 
 i 
 
 1 
 
 0.10 
 
 2.00 
 
 0.25 
 
 0.16 
 
 None 
 
 None 
 
 54.00 
 
 Trace 
 
 Trace 
 
 """42715 
 None 
 None 
 
 CD 
 
 s 
 
 
 1 
 
 0.20 
 
 3.40 
 
 0.50 
 
 0.26 
 
 Trace 
 
 None 
 
 64.00 
 
 Trace 
 
 Trace 
 
 0.60 
 
 42.00 
 
 Trace 
 
 Trace 
 
 8 
 
 
 o 
 
 H2 O 
 
 Tea Os 
 
 re 
 
 Ka - 
 
 Na2 
 
 COa 
 
 PzOe 
 
 fgnition loss 
 
 i 
 
 
Chemical Analyses of Texas Bocks and Minerals 189 
 
 
 E-i 
 I— I 
 
 moi, 
 
 qsv 
 
 mnattis 
 
 nsSOJ^iit 
 
 naSiExO 
 
 TioSojp^H 
 
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190 
 
 University of Texas Bulletin 
 
 IB»OJ, 
 
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 jnqdins 
 
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Chemical Analyses of Texas Bocks and Minerals 191 
 
 I I I I I ! I I I 
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192 
 
 University of Texas Bulletin 
 
 
 
 I— I 
 
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Chemical Analyses of Texas Eocks and Minerals 193 
 
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194 
 
 University of Texas Bulletin 
 
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Chemical Analyses of Texas Rocks and Minerals 195 
 
 
 ULTIMATE ANALYSIS OP TKXAR LIGNITE 
 
 
 
 
 
 
 
 
 Oxygen 
 
 
 
 No. 
 
 OouQty 
 
 Moist. 
 
 Carbon 
 
 Hydro. 
 
 and 
 Nitro. 
 
 Ash 
 
 Sulphur 
 
 1437 
 
 Anderson 
 
 
 53.06 
 
 4.06 
 
 24.12 
 
 17.74 
 
 1.02 
 
 1438 
 
 Bowie ; 
 
 10.67 
 
 69.84 
 
 S.IO 
 
 26.97 
 
 9.10 
 
 1.00 
 
 1439 
 
 Cherokee _ 
 
 
 66.67 
 60.79 
 
 3.81 
 4.96 
 
 22.06 
 23.68 
 
 6.83 
 9.27 
 
 1.64 
 
 1440 
 
 Sregg . 
 
 12.00 
 
 0.88 
 
 1441 
 
 
 13.35 
 
 
 3.95 
 
 21.66 
 
 8.97 
 
 2.20 
 
 1442 
 
 
 
 63.09 
 62.48 
 
 3.64 
 3.21 
 
 22.56 
 20.80 
 
 9.68 
 11.66 
 
 1.08 
 
 1443 
 
 Lee - ' 
 
 16.60 
 
 1.95 
 
 1444 
 
 Leon ' „ 
 
 
 63.60 
 
 4.08 
 
 24.02 
 
 7.79 
 
 0.65 
 
 1445 
 
 Medina 
 
 13.25 
 
 60.92 
 
 2.57 
 
 25.34 
 
 9.10 
 
 1.47 
 
 1446 
 
 Milam 
 
 
 60.93 
 
 4.12 
 
 22.27 
 
 11.36 
 
 1.32 
 
 1447 
 
 Milam - 
 
 17.75 
 
 62.60 
 
 5.46 
 
 20.84 
 
 7.64 
 
 0.97 
 
 1448 
 
 Milam — - - - - 
 
 18.25 
 
 64.50 
 
 6.37 
 
 20.76 
 
 8.66 
 
 0.81 
 
 1449 
 
 Morris _ 
 
 8.55 
 
 69.87 
 
 4.70 
 
 24.35 
 
 8.68 
 
 2.42 
 
 1450 
 
 Rn,in,q 
 
 
 57.04 
 59.32 
 68.16 
 66.14 
 
 4.01 
 2.80 
 4.46 
 6.29 
 
 24.48 
 20.27 
 13.11 
 19.28 
 
 13.35 
 16.63 
 12.77 
 9.21 
 
 1.11 
 
 1451 
 
 
 
 0.98 
 
 1452 
 
 
 
 1.50 
 
 1463 
 
 Elobertson 
 
 16.40 
 
 1.15 
 
 1454 
 
 Rush . 
 
 16.63 
 
 68.93 
 
 4.20 
 
 22.14 
 
 10.09 
 
 4.64 
 
 1455 
 
 San Augustine - 
 
 
 61.12 
 
 3.32 
 
 24.63 
 
 7.75 
 
 3.39 
 
 1456 
 
 Smith 
 
 9.83 
 
 67.40 
 
 3.60 
 
 23. SI 
 
 14.74 
 
 0.95 
 
 1467 
 
 Webb (outcrop) _ _ __ _ 
 
 
 59.28 
 
 3.29 
 
 16.S8 
 
 17.56 
 
 0.89 
 
 1458 
 
 Wood 
 
 10.85 
 
 66.33 
 
 4.29 
 
 24.13 
 
 14.39 
 
 0.84 
 
 Average 
 
 
 1S.67 
 
 60.98 
 
 4.01 
 
 22.16 
 
 11.01 
 
 1.48 
 
 ASH PEOM WOOD COUNTY LIGNITE 
 
 No. 
 
 Silica 
 
 •Alumina 
 
 Ferric 
 Oxide 
 
 Lime 
 
 Magnesia 
 
 Sulphuric 
 Acid 
 
 Total 
 
 1459 
 1460 
 1461 
 1462 
 
 46.03 
 46.88 
 46.64 
 35.64 
 
 19.14 
 24.35 
 23.46 
 27.32 
 
 5.15 
 2.23 
 6.6S 
 6.60 
 
 22.95 
 15.90 
 19.57 
 21.45 
 
 0.80 
 0.82 
 0.87 
 0.46 
 
 8.04 
 
 9.15 
 
 4.31 
 
 10.16 
 
 101.11 
 
 99.38 
 
 101.43 
 
 101.63 
 
196 
 
 University of Texas Bulletin 
 
 o 
 
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 44.805 
 47.22 
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 42.90 
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 36.94 
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 1482 
 1483 
 1484 
 1485 
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 1458 
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 1490 
 1491 
 1492 
 1498 
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 1496 
 1496 
 
Chemical Analyses of Texas Bocks and Minerals 197 
 
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198 
 
 University of Texas Bulletin 
 
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 1.24 
 
 Trace 
 0.64 
 0.62 
 0.85 
 1.61 
 0.32 
 
 lEJOi 
 
 88888888888588888 
 
 §|§|§li§|||S|il|8 
 
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 38.90 
 38.20 
 40.64 
 39.80 
 37.10 
 36.98 
 36.29 
 85.39 
 40.30 
 24.89 
 43.77 
 49.06 
 58.96 
 50.10 
 43.04 
 32.36 
 4.66 
 
 MMBin 
 
 ■qinoo 
 
 nri! TO A 
 
 29.20 
 32.90 
 32.60 
 32.70 
 . 29.84 
 1 32.26 
 36.61 
 39.93 
 39.73 
 60.37 
 40.95 
 39.05 
 34.48 
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 11 i i i i 
 
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 10.08 
 12.18 
 
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 '""6"65 
 5.72 
 
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 66.06 
 
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 CO 1 i(>a M(?j 1 
 
 11377 
 9585 
 10832 
 12fl04 
 11740 
 12470 
 12660 
 11190 
 
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 2.17 
 2.66 
 
 2.82 
 0.69 
 0.67 
 2.25 
 2.09 
 2.06 
 2.40 
 2.50 
 
 100.00 
 100.00 
 100.00 
 100.00 
 100.00 
 100.00 
 
 100.00 
 100.00 
 100.00 
 100.00 
 100.00 
 100.00 
 100.00 
 100.00 
 
 8.95 
 13.24 
 12.05 
 16.92 
 11.37 
 
 9.45 
 
 lSSgg«g8g 
 
 40.71 
 36.99 
 41.04 
 37.65 
 37.93 
 40.55 
 
 40.36 
 35.70 
 31.40 
 37.97 
 38.10 
 39.18 
 40.00 
 30.00 
 
 50.S4 
 49.77 
 46.91 
 45.43 
 60.70 
 60.00 
 
 39.48 
 40.70 
 42.80 
 .54.00 
 50.45 
 47.52 
 47.70 
 46.40 
 
 S 1 188 1^ 
 S 1 IS IS 
 
 rt I irt IN 
 
 10752 
 8617 
 10182 
 
 3.52 
 4.18 
 
 2.66 
 0.62 
 0.62 
 
 100.00 
 100.00 
 100.00 
 100.00 
 
 ""99T79 
 
 100.00 
 100.00 
 100.00 
 
 IIIIIII 
 
 8.61 
 12.95 
 11.74 
 16.26 
 
 ""ioTie 
 
 19.06 
 21.22 
 24.25 
 
 SSSS 1 ISe 
 gSS8 i is? 
 
 38.14 
 32.09 
 29.52 
 
 SSS§ 1 i&S 
 
 ssgsss 1 lac 
 
 37.31 
 36.59 
 40.23 
 
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(Chemical A^ialyses of Texan Rocks and Minerals 199 
 IRON ORE (1) TERTIARY 
 
 o 
 
 
 O 
 
 < 
 
 e9 
 O 
 
 O 
 
 o 
 
 o 
 
 bD 
 
 
 w 
 
 PM 
 
 
 to 
 
 
 
 (5 
 
 
 
 
 +3 
 
 5 
 
 
 
 1-^ 
 
 1574 
 
 11.17 
 
 11.35 
 
 10.72 
 
 13.36 
 
 8.70 
 
 9.84 
 
 11.40 
 
 10.96 
 
 12.76 
 
 53.45 
 
 24.48 
 
 17.00 
 
 16.95 
 
 54.00 
 
 49.90 
 
 17.20 
 
 13.80 
 
 25.30 
 
 41.80 
 
 5.66 
 
 27,80 
 
 9.00 
 
 6.20 
 
 29.80 
 
 7.60 
 
 14.60 
 
 0.40 
 
 3.00 
 
 9.0O 
 
 1.95 
 
 10. 2S 
 
 3.04 
 
 7.20 
 
 9.14 
 
 lO.lf 
 
 12.07 
 
 14 .9^ 
 
 3.07 
 
 13.67 
 8.00 
 
 10.11 
 3.40 
 
 13.18 
 8.16 
 
 18.27 
 8.76 
 7.04 
 3.71 
 
 ~7T7i 
 17.03 
 2.80 
 4.31 
 3.17 
 3.57 
 3.20 
 
 "2^16 
 
 6.16 
 
 5.00 
 
 4.68 
 
 4.48 
 
 7.39 
 
 4.63 
 
 7.60 
 
 4.24 
 
 4.04 
 
 7.47 
 
 14.79 
 
 14.03 
 
 14.76 
 
 7.68 
 
 16.73 
 
 16.12 
 
 15.18 
 
 11.25 
 
 
 
 
 
 
 
 0.49 
 0.24 
 0.30 
 
 
 
 
 
 
 44.62 
 
 1575 
 
 — 
 
 — 
 
 
 — 
 
 
 
 
 
 
 
 
 
 
 48.65 
 
 1676 
 
 
 
 46.61 
 
 1677 
 
 68.80 
 64.32 
 67.84 
 59.53 
 68.54 
 68.86 
 38.29 
 60.05 
 62.42 
 60.17 
 37.00 
 37.99 
 70.83 
 70.83 
 61.80 
 37.46 
 80.85 
 61.44 
 74.60 
 79.32 
 57.92 
 77.61 
 73.97 
 85.70 
 81.36 
 77.56 
 79.11 
 62.23 
 70.93 
 67.31 
 71.37 
 69.30 
 58.90 
 67.47 
 76.84 
 
 
 
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 Tt. 
 Tr. 
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 0.45 
 
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 1.00 
 
 1.26 
 
 0.70 
 
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 13.70 
 14.10 
 14.69 
 
 9.60 
 10.25 
 10.70 
 
 4.60 
 
 "liTio 
 
 6.60 
 6.10 
 7.00 
 8.22 
 12.01 
 8.50 
 
 99.38 
 100.30 
 10O.3S 
 
 99.80 
 
 99.75 
 100.06 
 
 99.96 
 
 'iooTio 
 
 100.49 
 99.90 
 
 100.20 
 99.66 
 
 100.63 
 
 100.36 
 
 48.16 
 
 1578 
 1579 
 
 — - 
 
 
 
 Tr. 
 
 45.02 
 47.49 
 
 1680 
 
 Tr. 
 
 
 
 
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 Tr. 
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 41.67 
 
 1581 
 1682 
 1583 
 
 
 
 
 
 
 47. ST 
 48.20> 
 
 1684 
 
 
 
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 — 
 
 
 42.04 
 43.69 
 
 1586 
 
 0.29 
 
 Tr. 
 
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 42.11 
 
 1687 
 (588 
 
 -— 
 
 
 
 Tr. 
 
 0.20 
 
 0.24 
 
 Tr. 
 
 1.66 
 
 25.90- 
 26.69 
 
 1689 
 15S0 
 1691 
 1592 
 
 :;:: 
 
 
 
 
 49.88 
 49.68 
 43.26 
 26.22 
 
 
 
 
 
 
 
 
 Tr. 
 
 Tr. 
 
 0.10 
 
 0.51 
 
 0.34 
 
 Tr. 
 
 0.11 
 
 Tr. 
 
 0.51 
 
 0.34 
 
 0.22 
 
 O.H 
 
 0.19 
 
 0.25 
 
 0.92 
 
 0.90 
 
 Tr. 
 
 Tr. 
 
 0.67 
 
 Tr. 
 
 0.28 
 
 0.32 
 
 Tr. 
 
 0.32 
 
 0.32 
 
 Tr. 
 
 0.26 
 
 0.32 
 
 0.32 
 
 0.12 
 
 0.62 
 
 Tr. 
 
 0.13 
 
 0.32 
 
 0.93 
 
 0.94 
 
 0.26 
 
 0.26 
 
 ----- 
 
 11.60 
 
 5.2s 
 
 10.30 
 
 9.17 
 
 7.35 
 
 6.85 
 
 6.61 
 
 6.11 
 
 9.60 
 
 8.15 
 
 10.96 
 
 11.86 
 
 11.32 
 
 10.41 
 
 11.43 
 
 12.93 
 
 12.02 
 
 11.92 
 
 9.11 
 
 100.15 
 
 100.03 
 
 99.32 
 
 99.88 
 
 100.21 
 
 99.98 
 
 99.92 
 
 100.46 
 
 99.85 
 
 99.92 
 
 100.51 
 
 100.52 
 
 99.69 
 
 100.092 
 
 100.86 
 
 101.20 
 
 100.82 
 
 100.21 
 
 101.36 
 
 56.69- 
 
 1594 
 
 
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 0.21 
 
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 0.60 
 
 0.82 
 
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 1600 
 1601 
 1602 
 
 
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 66.92 
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 0.084 
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 ini 
 
 
 
 
 65.38 
 44.66 
 49.65 
 47.12 
 49.96 
 41.65 
 41.23 
 40.23 
 63.79 
 34 71 
 
 1613 
 
 19.04 
 21.12 
 18.00 
 7.28 
 35.80 
 30.00 
 10.81 
 18.42 
 
 'II'as 
 
 17.SI 
 17.67 
 20.36 
 23.84 
 16.6£ 
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 18.60 
 62.4f 
 35.80 
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 11 .60 
 44.00 
 11.67 
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 11.85 
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 11.30 
 
 11.87 
 11.89 
 15.76 
 14.99 
 10.75 
 
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 18.49 
 28.41 
 4.24 
 
 55.90 
 53.24 
 53.06 
 61.81 
 43.75 
 62.33 
 
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 69.74 
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 0.89 
 
 0.23 
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 0.67 
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 0.47 
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 0.38 
 
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 1.86 
 
 0.27 
 
 0.27 
 
 0.18 
 
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 0.26 
 
 
 13.68 
 12.64 
 13.06 
 14.46 
 9.40 
 
 13.28 
 8.73 
 
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 100.96 
 100.06 
 100.60 
 99.90 
 99.91 
 
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 99.13 
 
 99.56 
 
 39.13 
 
 1614 
 1615 
 
 
 
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 37.54 
 87.14 
 
 1616 
 1617 
 
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 43.13 
 30.32 
 
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 0.268 
 
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 0.01 
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 48.31 
 48.11 
 41.19 
 
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 1633 
 1634 
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 73.03 
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 74.04 
 
 100.10 
 
 99.81 
 
 99.82 
 
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 1638 
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 8.20 
 8.21 
 
 42.93 
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200 University of Texas Bulletin 
 
 IRON ORE (1) TERTIARY (Continued) 
 
 & 
 
 
 < 
 
 S 
 
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 Eh 
 
 O 
 
 5 
 
 o 
 
 1 
 
 ^, 
 
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 ft 
 
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 1640 
 1641 
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 1643 
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 1646 
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 1648 
 1649 
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 1661 
 
 14.60 
 
 11.60 
 
 15.15 
 
 36.66 
 
 16.70 
 
 13.20 
 
 26.70 
 
 16.80 
 
 39.70 
 
 13.40 
 
 39.40 
 
 38.40 
 
 26.90 
 
 33.60 
 
 41.80 
 
 49.30 
 
 60.90 
 
 33.60 
 
 58.40 
 
 35.80 
 
 26.80 
 
 60.20 
 
 46.80 
 
 16.20 
 
 1.5.40 
 
 10.06 
 
 12.13 
 
 10.06 
 
 4.30 
 
 10.40 
 
 17.20 
 
 10.30 
 
 14.30 
 
 8.794 
 
 8.60 
 
 36.75 
 
 32.60 
 
 37.10 
 
 33.92 
 
 6.97 
 
 1.49 
 
 6.04 
 
 53.20 
 
 26.43 
 
 6.77 
 
 0.93 
 
 8.92 
 
 4.24 
 
 24.64 
 
 3.10 
 
 1.30 
 
 10.78 
 
 2.90 
 
 1.22 
 
 7.10 
 
 5.80 
 7.09 
 
 10.18 
 6.37 
 
 10.77 
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 0.70 
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 10.70 
 9.89 
 8.86 
 9.89 
 3.16 
 10.90 
 14.81 
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 6.60 
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 4.66 
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 4.19 
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 19.96 
 7.07 
 8.86 
 1.58 
 6.20 
 2.41 
 1.75 
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 2.06 
 5.42 
 
 72.40 
 67.91 
 61.22 
 47.58 
 64.03 
 69.65 
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 67.75 
 44.07 
 63.95 
 48.79 
 50.68 
 62.37 
 52.87 
 36.41 
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 62.87 
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 63.20 
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 59.20 
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 0.33 
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 0.27 
 
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 0.35 
 
 1.14 
 
 0.07 
 
 0.26 
 
 0.15 
 
 0.12 
 
 
 6.80 
 13.20 
 13.50 
 9.90 
 7.90 
 14.00 
 7.81 
 9.60 
 7.20 
 14.20 
 
 100.09 
 100.07 
 100.05 
 100.01 
 100.07 
 100.12 
 100.18 
 99.96 
 99.78 
 100.19 
 
 50.68 
 47.BS 
 42.85 
 SS.27 
 44.82 
 48.75 
 45.43 
 47.42 
 30.84 
 44.7e 
 
 16S2 
 1653 
 1654 
 
 0.09 
 
 0.71 
 
 
 
 10.00 
 
 99.90 
 
 43.65 
 
 1655 
 
 
 
 
 
 
 
 
 
 
 
 
 21.81 
 
 1656 
 
 
 
 
 
 
 
 
 
 
 
 
 22.477 
 
 1657 
 
 
 
 
 
 
 
 
 
 
 
 
 37.009 
 
 1658 
 
 — 
 
 .— 
 
 
 
 — 
 
 
 
 
 
 
 
 
 
 25.34 
 
 1659 
 
 
 
 
 
 
 28.812 
 
 1660 
 
 
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 1.06 
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 ---- 
 
 — 
 
 
 
 
 
 
 
 
 37.24 
 
 1661 
 1662 
 1663 
 
 1665 
 
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 7.70 
 6.75 
 
 'iooToe 
 
 99.40 
 100.30 
 
 18.067 
 25.039 
 41.44 
 45.01 
 51.62 
 47.26 
 
 1667 
 1668 
 1669 
 1670 
 1671 
 1672 
 1673 
 
 8.45 
 69.90 
 55.59 
 67.14 
 63.02 
 71.78 
 45.26 
 51.46 
 55.04 
 50.91 
 54.21 
 69.75 
 74.11 
 79.06 
 26.27 
 64.42 
 60.44 
 65.79 
 87. 9S 
 76.24 
 63.43 
 76.42 
 83.40 
 74.87 
 84.46 
 84.16 
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 Tr7 
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 0.35 
 1.10 
 0.54 
 0.51 
 
 — 
 
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 8.05 
 
 11.05 
 
 30.20 
 
 12.60 
 
 18.387 
 
 4.60 
 
 4.90 
 
 6.70 
 
 6.10 
 
 6.10 
 
 12.16 
 
 11.23 
 
 'iw'.m 
 100.10 
 
 100.05 
 
 100.24 
 
 99.91 
 
 100.00 
 
 98.44 
 
 100.06 
 
 99.89 
 
 99.99 
 
 100.29 
 
 100.00 
 
 98.08 
 
 99.97 
 
 100.00 
 
 99.70 
 
 99.72 
 
 100.68 
 
 100.39 
 
 100.365 
 
 100.52 
 
 100.19 
 
 100.12 
 
 99.92 
 
 100.97 
 
 100.97 
 
 100.07 
 
 99.36 
 
 51.52 
 56.31 
 48.9S 
 38.91 
 47.00 
 44.11 
 
 1674* 
 1675 
 1676 
 1677 
 1678 
 1679 
 1680 
 1681 
 1682 
 1683 
 1684 
 16S6 
 1686 
 1687 
 1688 
 1689 
 1680 
 X691 
 1692 
 1693 
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 16»« 
 1698 
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 1698 
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 0.28 
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 — 
 
 
 
 0.69 
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 0.59 
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 0.93 
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 1.56 
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 0.18 
 0.10 
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 0.61 
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 24.00 
 
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 38.53 
 35.64 
 37.94 
 48.83 
 61.88 
 65.54 
 18.37 
 49.09 
 
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 0.225 
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 0.22 
 0.21 
 0.08 
 0.19 
 0.19 
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 12.95 
 13.90 
 14.40 
 12.60 
 10.70 
 
 9.90 
 12.80 
 12.20 
 12.20 
 12.20 
 
 6.70 
 12.60 
 14.64 
 12.14 
 14.30 
 12.46 
 12.60 
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 46.06 
 
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 0.14 
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 0.09 
 0.03 
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 0.08 
 0.22 
 
 49.65 
 63.43 
 44.39 
 65.62 
 68.28 
 52.40 
 69.12 
 68.91 
 66.84 
 24.65 
 44.62 
 61.81 
 41.17 
 63.87 
 
 
 
 
 
 
 
 
 
 
 
 
 65.90 
 
 
 
 
 
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 ---- 
 
 
 
 
 
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 46.11 
 
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 1703 
 1704 
 1705 
 
 10.79 
 
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 67.02 
 68.74 
 38.02 
 46.27 
 
Chemical Analyses of Texas Kocks and Minerals 201 
 IRON ORE (1) TERTIARY (Continued) 
 
 d 
 
 S5 
 
 o 
 
 O 
 
 <5 
 
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 C 
 
 o 
 
 ffl 
 
 <- 
 
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 c 
 
 w 
 
 Ph 
 
 O 
 
 CO 
 
 
 O 
 D 
 
 
 1 
 
 
 
 P 
 
 1706 
 
 8.18 
 16.33 
 18.77 
 
 4.30 
 26.07 
 11.86 
 
 6.91 
 86.70 
 40.40 
 14.60 
 36.27 
 40.60 
 
 30.63 
 
 12.66 
 8.31 
 2.22 
 
 12.65 
 6.91 
 
 17.04 
 6.82 
 8.42 
 5.17 
 4.54 
 7.86 
 
 67.25 
 67.09 
 65.79 
 80.78 
 48.65 
 60.09 
 45.30 
 44.98 
 39.78 
 68.23 
 48.96 
 42.84 
 
 1 
 
 1.24 
 
 Tr. 
 2.30 
 0.88 
 2.30 
 1.81 
 15.68 
 2.27 
 1.06 
 0.86 
 2.10 
 2.10 
 
 0.80 
 
 Tr7 
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 Tr. 
 Tr. 
 
 TrV 
 Tr. 
 Tr. 
 Tr. 
 Tr. 
 
 --- 
 
 
 
 1.45 
 
 "o"36 
 0.02 
 0.26 
 0.37 
 
 'o'.m 
 
 0.18 
 0.34 
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 1.04 
 
 "TtV 
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 0.38 
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 0.28 
 
 ~o'm 
 
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 0.57 
 
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 6.05 
 10.47 
 10.30 
 12.40 
 
 9T7O 
 9.60 
 10.20 
 7.26 
 6.10 
 
 100.12 
 100.03 
 100.48 
 98.09 
 100.23 
 99.71 
 97.25 
 100.65 
 99.65 
 99.87 
 100.63 
 100.54 
 
 40.08 
 
 1707 
 1708 
 1709 
 1710 
 1711 
 1712 
 1713 
 1714 
 1715 
 1716 
 1717 
 
 
 
 ----- 
 
 39.96 
 46.05 
 66.65 
 34.08 
 46. 2g 
 31.71 
 31.49 
 27.86 
 47.78 
 34.27 
 29.99 
 
 •Numbers 1695-1704 inclusive in column marked "Loss on ignition" include moisture 
 and combined water which were determined separately In the analysis. 
 
 n. IRON ORES OTHER THAN TERTIARY 
 
 1718 
 1719 
 1720 
 1721 
 1722 
 1723 
 1724 
 1725 
 1726 
 1727 
 172? 
 
 1730 
 1731 
 1732 
 1733 
 173'! 
 1736 
 1736 
 1737 
 1738 
 i739 
 1740 
 1741 
 1742 
 1743 
 1744 
 1745 
 
 1746' 
 1747 
 1748 
 1Y49 
 1750 
 1751 
 1752 
 1753 
 1764 
 1756 
 17.56 
 1757 
 1758 
 1759 
 
 1760t 
 1761 
 1762 
 1763 
 1764 
 
 B.05 
 
 1.90 
 
 26.5 
 
 28.55 
 
 2.90 
 
 3.70 
 
 23.35 
 
 4.65 
 
 2.46 
 
 13.26 
 
 10.60 
 
 3.86 
 
 5.61 
 
 14.95 
 
 17.60 
 
 14.40 
 
 14.40 
 
 30.30 
 
 22.70 
 
 7.70 
 
 21.36 
 
 47.76 
 
 8.40 
 
 8.60 
 
 10.16 
 
 11.60 
 
 1.10 
 
 9.40 
 
 69.60 
 
 84.30 
 
 8.51 
 
 5.30 
 
 10.20 
 
 9.75 
 
 41.90 
 
 14.00 
 
 47.88 
 
 7.60 
 
 2.38 
 
 6.62 
 
 6.64 
 
 2.9 
 
 34.67 
 
 54.56 
 
 52.23 
 
 62.53 
 
 la.m 
 
 4.72 
 1.33 
 
 79.78 
 94.82 
 
 
 
 0.25 
 1.73 
 
 Tr. 
 Tr. 
 
 
 
 o"ooi 
 
 0.10 
 
 ""0T02 
 0.17 
 
 "6"5oi 
 
 0.08 
 
 0.89 
 0.12 
 
 Tr. 
 0.09 
 
 
 
 ■ 9.50 
 
 100.19 
 100.00 
 
 33.91 
 3.49 
 6.21 
 1.90 
 
 '3^17 
 7.71 
 0.28 
 8.21 
 6.64 
 1.68 
 9.9S 
 2.82 
 3.10 
 6.63 
 
 "ssrii 
 
 81.99 
 68.70 
 86.40 
 87.43 
 79.14 
 
 'si'.li 
 
 78.83 
 64.77 
 71.67 
 67.39 
 73.76 
 67.64 
 67.27 
 75.98 
 69.80 
 42.07 
 
 ----- 
 
 Tr. 
 1.66 
 2.05 
 
 '6T28 
 Tr. 
 
 --- 
 
 0.13 
 0.20 
 0.33 
 
 "ol82 
 
 ~0M 
 0.30 
 0.84 
 
 "oTbs 
 
 0.82 
 Tr. 
 0.47 
 Tr. 
 0.24 
 
 "Tr"." 
 Tr. 
 0.03 
 Tr. 
 0.27 
 0.12 
 0.22 
 0.24 
 
 Tr. 
 
 0.38 
 
 Tr. 
 
 "tt." 
 Tr. 
 Tr. 
 
 "oTog 
 
 0.51 
 0.58 
 Tr. 
 
 "ty"." 
 
 ~T"r"." 
 Tr. 
 Tr. 
 0.86 
 1.31 
 Tr.- 
 
 "2T40 
 
 6.60 
 7.10 
 3.90 
 
 """i'90 
 
 ""ii'so 
 10.10 
 
 8.00 
 
 5.20 
 6.10 
 9.36 
 4.20 
 12.40 
 4.40 
 1.80 
 
 99.99 
 100.82 
 100.18 
 
 100.39 
 
 "ioolii 
 
 99.56 
 100.00 
 
 "iooTei 
 
 100.61 
 99.89 
 99.99 
 
 100.08 
 99^.58 
 
 "iooTie 
 
 99.92 
 
 99.83 
 100.54 
 100.26 
 
 99.95 
 100.63 
 
 99.97 
 100.10 
 100.21 
 100.20 
 
 93.39 
 
 
 2.87 
 
 
 
 
 
 
 
 "oToi 
 
 0.018 
 0.05 
 
 
 
 Tr. 
 0.61 
 0.81 
 
 
 Tr. 
 
 0.80 
 
 0.54 
 
 Tr. 
 
 "4T47 
 
 'tt.' 
 Tr. 
 
 --- 
 
 mil 
 
 "o"28 
 Tr. 
 0.55 
 
 mil 
 
 Trace 
 Trace 
 0.0?1 
 
 --- 
 
 0.10 
 
 0.48 
 
 0.74 
 
 0.62 
 
 Tr. 
 
 1.24 
 
 
 
 
 
 
 
 'i'.ll 
 
 1.70 
 0.44 
 2.85 
 0.40 
 2.46 
 5.90 
 9.65 
 
 1.82 
 4.19 
 
 96.71 
 89.96 
 25.85 
 12.00 
 88.87 
 78.60 
 77.35 
 82.61 
 47.17 
 83.68 
 44.86 
 
 
 'oTee 
 
 0.41 
 
 Tr. 
 
 1.48 
 
 1.93 
 
 Tr. 
 
 3.46 
 
 0.53 
 
 1.60 
 
 0.35 
 
 Tr. 
 
 Tr. 
 
 TrV 
 
 Tr7 
 Tr. 
 Tr. 
 Tr. 
 
 TrV 
 
 Tr"." 
 Tr. 
 
 --- 
 
 7.16 
 Tr. 
 
 
 
 
 
 
 — 
 
 Trace 
 0.032 
 0.W8 
 0.445 
 0.06 
 0.07 
 0.04 
 0.05 
 0.01 
 0.05 
 
 0.01 
 0.80 
 
 "olffi 
 
 Tr. 
 Tr. 
 Tr. 
 
 oIlBt 
 
 o.iot 
 
 0.20t 
 lit 
 
 3.23 
 
 ""ilio 
 
 2.69 
 Tr. 
 Tr. 
 
 
 
 
 
 
 — - 
 
 0.44 
 
 Tr. 
 Tr. 
 
 
 
 -— 
 
 
 
 — - 
 
 
 
 
 
 1.05 
 
 w. 
 
 0.06 
 
 0.04 
 0.06 
 0.01 
 0.04 
 0.07 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Tr. 
 
 o.iot 
 
 56.86 
 63.98 
 49.00 
 37.37 
 59.72 
 57.39 
 48.09 
 0.48 
 61.00 
 
 69.09 
 55.18 
 45.34 
 60.17 
 47.17 
 51.63 
 40.28 
 40.09 
 53.16 
 48.86 
 29.49 
 57.80 
 57. 60 
 54.85 
 57.76 
 68.12 
 62.97 
 71.31 
 
 8.40 
 60.35 
 58.85 
 64.18 
 67.83 
 33.24 
 68.50 
 31.40 
 65.30 
 66.33 
 64.40 
 64.40 
 
 58.7 
 35.87 
 25.68 
 26.04 
 14.60 
 24.70 
 
 'Trace ol mangaiwse dioxide. 
 tTitanium oxide. 
 
202 
 
 Uttiversiiy of iejus Bulletin 
 
 IROxM ORE (1) TERTIARY (Continued) 
 
 i 
 
 
 O 
 
 5 
 
 i 
 
 9 
 
 O 
 
 S3 
 O 
 
 O 
 
 s 
 
 .1 
 
 m 
 
 Ik 
 
 o 
 
 1 
 
 8 
 
 s 
 
 n a 
 g M 
 
 « 
 
 P 
 
 1763 
 1766 
 
 34.68 
 4.69S 
 4.690 
 
 
 
 
 
 
 
 
 Tr. 
 
 0.04 
 
 0.08 
 0.069 
 0.093 
 O.061 
 
 
 
 
 o.ist 
 
 
 
 ---- 
 
 35.40 
 6S.40 
 
 1767 
 
 
 
 
 
 
 
 
 m.eo 
 66.45 
 
 1768 
 
 
 
 
 
 
 
 
 
 
 
 
 1769 
 1770 
 1771 
 1772 
 
 
 ::__ 
 
 
 
 ;;:;: 
 
 
 
 
 
 
 
 
 
 
 
 -"-- 
 
 
 
 66.53 
 
 64.90 
 58.87 
 61.45 
 
 1778 
 
 
 
 
 
 
 
 
 
 .045 
 
 0.34 
 
 .008 
 
 Trace 
 
 0.046 
 
 .0264 
 
 .0177 
 
 .0607 
 
 O.OIW 
 
 .0279 
 
 .0569 
 
 0.0663 
 
 .0168 
 
 
 
 
 
 
 67.70 
 
 1774 
 
 
 
 
 
 
 
 
 Tr. 
 Tr. 
 0.30 
 0.04 
 .68 
 0.93 
 2.21 
 0.32 
 0.64 
 0.53 
 0.47 
 0.64 
 
 
 
 
 
 
 66.10 
 
 177S 
 
 4.70 
 
 4.66 
 
 6.30 
 
 81.52 
 
 11.08 
 
 25.28 
 
 8.87 
 
 19.43 
 
 22.41 
 
 25.14 
 
 10.54 
 
 14.00 
 
 3.50 
 
 4.70 
 
 5.80 
 
 4.70 
 
 4.65 
 
 24.00 
 
 6.00 
 
 5.10 
 
 4.11 
 
 2.67 
 
 41.68 
 
 61.00 
 
 9.35 
 
 12.60 
 
 12.20 
 
 12.40 
 
 5.52 
 
 10.68 
 
 18.60 
 
 2.58 
 
 61.60 
 
 13.84 
 
 5. (.2 
 
 26.70 
 
 2.10 
 
 6.40 
 
 6.2C 
 
 
 
 
 
 
 
 
 
 
 
 
 63.23 
 
 1776 
 
 1777 
 
 — 
 
 
 
 — 
 
 
 
 
 
 
 
 — 
 
 
 
 
 66.82 
 66.G0 
 
 1778 
 
 — 
 
 91.76 
 87.17 
 
 
 
 
 2l6 
 
 
 
 
 
 100.51 
 101.44 
 
 89.90 
 
 83.49 
 
 86.73 
 
 99.53 
 
 100.30 
 
 100.66 
 
 100.97 
 
 99.76 
 
 99.50 
 
 99.80 
 
 100.57 
 
 100.53 
 
 100.24 
 
 99.24 
 
 46 33 
 
 1779 
 
 
 
 — 
 
 
 
 
 
 61.02 
 
 1780 
 
 
 
 
 
 
 
 24.08 
 
 1781 
 
 T.os 
 
 6.25 
 6.17 
 11.07 
 4.44 
 0.76 
 1.56 
 3.06 
 
 '6?82 
 
 'sTei 
 
 9.10 
 2.51 
 1.12 
 1.61 
 4.71 
 3.82 
 5.67 
 0.95 
 1.60 
 0.04 
 4.62 
 
 89.27 
 69.81 
 60.50 
 61 .06 
 88.34 
 70.22 
 74.14 
 81.31 
 65.40 
 65.70 
 77.10 
 62.77 
 68.27 
 68.64 
 88.48 
 87.98 
 46.21 
 18.50 
 85.79 
 85.68 
 83.69 
 81.89 
 82.51 
 
 
 
 
 
 62.49 
 
 1782 
 
 
 
 
 
 
 
 
 
 48.87 
 
 178S 
 
 
 
 
 
 42.35 
 
 1784 
 
 
 
 
 
 
 
 
 
 42.74- 
 
 1785 
 
 
 
 
 
 
 
 
 
 
 61.84 
 
 1786 
 
 10.49 
 15.41 
 8.12 
 16.53 
 2b. 20 
 16.54 
 11.94 
 23.03 
 26.49 
 
 0.66 
 
 Tr. 
 
 0.66 
 
 0.78 
 
 1.40 
 
 Tr. 
 
 0.10 
 
 Tr. 
 
 0.01 
 
 6.40 
 
 Tr. 
 
 'tt' 
 Tr. 
 
 
 TT. 
 
 1.02 
 
 0.02 
 
 Tr. 
 
 Tr. 
 
 Tr. 
 
 Tr. 
 
 Tr. 
 
 i'.ii 
 
 
 
 67.30 
 
 1787 
 
 
 
 
 
 
 
 0.24 
 Tr.- 
 
 .0.18 
 
 Tr. 
 
 0.76 
 
 0.20 
 
 0.17 
 
 T43 
 Tr. 
 0.35 
 Tr. 
 0.65 
 0.16 
 Tr. 
 0.20 
 
 
 
 63.87 
 
 1788 
 
 
 
 63 2a 
 
 1789 
 
 --"- 
 
 ----- 
 
 58 62 
 
 1790 
 1791 
 
 
 
 
 
 
 
 64.02 
 
 1792 
 1793 
 1794 
 1796 
 
 TrV 
 
 :::: 
 
 --- 
 
 ----- 
 
 63.22 
 65.68 
 68.63 
 
 61 94 
 
 1796 
 
 
 
 
 60.61 
 
 1797 
 179S* 
 1799 
 
 's'.m 
 
 0.46 
 0.99 
 2.20 
 Tr.- 
 1.23 
 1.23 
 0.22 
 0.59 
 1.15 
 1.16 
 17.70 
 0.65 
 
 Tr. 
 
 Tr. 
 
 TrV 
 Tr. 
 
 — 
 
 
 
 
 
 Tr. 
 
 0.70 
 
 Tr. 
 
 Tr. 
 
 Tr. 
 
 Tr. 
 
 — 
 
 5.16 
 9.90 
 
 100.03 
 100.12 
 100.60 
 100.03 
 100.91 
 100.43 
 100.32 
 98.46 
 99.97 
 100.86 
 99.S1 
 99.84 
 
 32.36 
 
 11.65 
 60.06 
 
 1800 
 
 
 
 69.98 
 
 1801 
 
 
 
 60.28 
 
 ISO?. 
 
 
 
 67 32 
 
 180e 
 
 2.20* 
 12720 
 
 ""2^92 
 
 "ii'm 
 
 02 ">% 
 
 1804 
 
 
 
 
 0.68 
 
 Tr. 
 
 0.20 
 
 Tr. 
 
 Tr. 
 
 TrT 
 0.92 
 0.51 
 Tr. 
 
 64.60 
 55.27 
 67.82 
 5.43 
 66.63 
 
 180S 
 1806 
 1807 
 IfWR 
 
 78.96 
 
 82.60 
 
 7.76 
 
 81.83 
 
 
 Tr. 
 Tr. 
 Tr. 
 Tr. 
 
 :::: 
 
 
 
 
 
 ISM- 
 
 
 
 0.05 
 
 
 1810 
 
 5.15 
 3.22 
 1.48 
 0.17 
 
 65.85 
 63.74 
 79.92 
 86.63 
 
 
 2.20 
 0.93 
 1.26 
 1.48 
 
 Tr. 
 Tr. 
 
 "ty." 
 
 — - 
 
 
 
 0.S4 
 0.13 
 0.13 
 0.18 
 
 0.38 
 Tr. 
 Tr. 
 0.09 
 
 
 
 100.62 
 99.82 
 99.89 
 
 10O.S5 
 
 46.10 
 
 IRIl 
 
 --- 
 
 10.20 
 lO.YO 
 6.60 
 
 44 62 
 
 1812 
 181S 
 
 — 
 
 
 
 
 
 65.94 
 60.64 
 
 *Manganese trioxide 1.93 
 tTitonium dioxide. 
 JManganese dioxide 0,23. 
 
1815 
 1816 
 1817 
 1818 
 1819 
 1820 
 1821 
 1822 
 1823 
 1824 
 1825 
 1826 
 1827 
 1828 
 1829 
 1830 
 1831 
 1832 
 1833 
 1834 
 1835 
 1836 
 1837 
 1838 
 1889 
 1840 
 1841 
 1842 
 1843 
 1844 
 1845 
 1846 
 1847 
 1848 
 1849 
 1860 
 
 1852 
 1858 
 18»i 
 1855 
 1856 
 18S7 
 1858 
 1859 
 1860 
 1861 
 , 1862 
 1863 
 1864 
 186S 
 1866 
 1867 
 1868 
 1869 
 1870 
 1871 
 1872 
 1873 
 1874 
 1875 
 1876 
 1877 
 1878 
 1879 
 1880 
 
 Chemical Analyses of Texas Bocks and Minerals 
 
 COPPER ORE, SILVER ORE, LEAD DEE, GOLD ORE 
 
 203 
 
 g 
 
 3 
 O 
 
 0.90 
 2.90 
 5.65 
 1.50 
 0.30 
 1.32 
 0.70 
 0.24 
 0.87 
 0.67 
 0.77 
 0.19 
 0.12 
 0.07 
 
 16.6 
 7.6 
 7.5 
 
 11.1 
 
 30.7 
 3.8 
 
 18.5 
 6.3 
 7.6 
 5.3 
 8.7 
 0.3 
 2.4 
 S.7 
 3.2 
 1.7 
 0.9 
 1.5 
 1.3 
 2.6 
 3.2 
 2.S 
 3.0 
 
 6.0 
 
 10.0 
 
 8.6 
 
 12.5 
 
 21.8 
 
 43.0 
 
 4.3 
 
 23.9 
 
 19.9 
 
 2.5 
 
 46.4_ 
 
 24.7 
 
 5.9 
 
 0.7 
 
 5.5 
 
 23.8 
 
 Trace 
 
 79.4 
 
 33.2 
 
 2.0 
 
 48.5 
 
 7.5 
 
 2.3 
 
 2.6 
 
 3.4 
 
 9.90 
 
 10.7 
 
 9.5 
 
 3.5 
 
 None 
 None 
 None 
 
 0.40 
 
 None 
 
 None 
 
 1.00. 
 
 6.0O 
 
 6.00 
 
 e.oo 
 
 7.00 
 4.00 
 
 10.5 
 9.5 
 8.5 
 
 11.5 
 8.5 
 6.0 
 6.5 
 6.5 
 5.0 
 5.5 
 4.6 
 3.0 
 4.0 
 6.0 
 6.0 
 6.0 
 6.0 
 
 2.5 
 
 2.0 
 
 2.5 
 
 2.0 
 
 2.0 
 77.0 
 None 
 48.0 
 29.0 
 14.0 
 
 4.5 
 71.5 
 
 7.8 
 
 1.1 
 .450 
 Trace 
 None 
 None 
 ^.5 
 None 
 22.0 
 20.0 
 
 0.086 
 None 
 None 
 66.80 
 None 
 
 None 
 3.5 
 3.0 
 2.6 
 1.5 
 l.OO 
 1.00 
 14.00 
 3.60 
 6.0 
 6.0 
 1.0 
 1.0 
 3.0 
 4.0 
 2.0 
 None 
 None 
 None 
 4.0 
 3.0 
 3.0 
 4.0 
 
 13.0 
 
 9.0 
 None 
 
 Trace 
 Trace 
 Trace 
 
 None 
 None 
 None 
 None 
 
 None 
 
 Trace 
 
 Trace 
 
 0.05 
 
 0.5 
 
 None 
 
 Trace 
 None 
 
 Trace 
 None 
 None 
 None 
 None 
 None 
 None 
 None 
 None 
 None 
 1.1 
 
 None 
 None 
 None 
 None 
 
 1889 
 
 1890 
 
 1891 
 
 1892 
 
 1893 
 
 1894 
 
 1895 
 
 1896 
 
 1897 
 
 1898 
 
 1899 
 
 1900 
 
 1901 
 
 1902 
 
 1903 
 
 1904 
 
 1905 
 
 1906 
 
 1908 
 
 1909 
 
 1910 
 
 1911 
 
 1912 
 
 1913 
 
 1914 
 
 1915 
 
 191B 
 
 1917 
 
 1918 
 
 1919 
 
 1920 
 
 1921 
 
 1922 
 
 1923 
 
 1924 
 
 1925 
 
 1926 
 
 1927 
 
 1928 
 
 1929 
 
 1930 
 
 1931* 
 
 1932 
 
 1933 
 
 1934 
 
 1935 
 
 1936 
 
 1937 
 
 1940 
 1941 
 1942 
 1943 
 1944 
 1945 
 1946 
 1947 
 1948 
 1949 
 1950 
 1951 
 1952 
 1953 
 1954 
 19,55 
 1666 
 
 g 
 
 a 
 D 
 
 24.3 
 "I'l" 
 
 None 
 None 
 
 None 
 None 
 None 
 3.0 
 Trace 
 None 
 None 
 None 
 
 Trace 
 
 None 
 
 2.4 
 
 5.4 
 None 
 None 
 
 60 
 
 9.9 
 
 1.95 
 
 9.0 
 
 9.15 
 22.65 
 11.25 
 60.0 
 49.50 
 
 7.0 
 271.6 
 
 1.2 
 198.71 
 16.50 
 
 1.3 
 37.0 
 
 1.1 
 19.00 
 48.00 
 11.0 
 
 2.70 
 
 66.21 
 
 177.8 
 
 4089.5 
 
 2892.2 
 
 20.7 
 
 1.4 
 60.0 
 435.3 
 131.45 
 Trace 
 29.5 
 
 8.12 
 33.75 
 None 
 None 
 
 6.0 
 
 4.0 
 14.0 
 
 2.5 
 
 4.0 
 
 5.0 
 33.0 
 60.0 
 28.0 
 39.15 
 11.26 
 26.80 
 31.20 
 
 9.0 
 67.75 
 
 9.15 
 16.80 
 
 6.00 
 24.60 
 24.00 
 75.00 
 27.45 
 43.35 
 
 7.0O 
 Trace 
 16.60 
 49.60 
 
 8.6 
 None 
 None 
 
 6.00 
 19.30 
 
 4.74 
 27.3 
 S9.2 
 27.0 
 77.0 
 26.2 
 24.95 
 
 74.0 
 None 
 None 
 None 
 
 39.0 
 
 None 
 Trace 
 None 
 None 
 None 
 Trace 
 Trace 
 65.0 
 
 7.6 
 21.0 
 
 38.1 
 3.10 
 18.50 
 5.5 
 8.5 
 12.0 
 2.0 
 12.0 
 10.0 
 55.68 
 77.0 
 61.0 
 43.70 
 27.00 
 37.00 
 68.70 
 47.40 
 49.50 
 27.30 
 16.50 
 8.90 
 48.00 
 43.00 
 60.00 
 52.00 
 51.70 
 24.95 
 7.5 
 74.00 
 26.20 
 
 0.10 
 Trace 
 
 None 
 None 
 None 
 None 
 None 
 0.45 
 0.05 
 None 
 None 
 None 
 None 
 None 
 0.17 
 None 
 0.25 
 0.50 
 Trace 
 None 
 None 
 None 
 2.0 
 Trace 
 None 
 Trace 
 None 
 Trace 
 Trace 
 None 
 None 
 None 
 None 
 
 Trace 
 
 None 
 None 
 
 0.06 
 None 
 
 "Tis" 
 
 1.4 
 .25 
 0.05 
 0.50 
 0.70 
 
204 University of Texas Bulletin 
 
 OOPPEB ORE. SILVER ORE, LEAD. ORE, GOLD ORE— Oontiiiaed 
 
 d 
 
 Y. 
 
 8 
 
 ' 1 
 
 g 
 
 I 
 
 d 
 
 S 
 
 i 
 
 5 
 
 8 
 1 
 
 1 
 
 1881 
 1882 
 1883 
 1884 
 
 2.5 
 
 3.7 
 
 1.15 
 
 8.6 
 
 34.8 
 
 None 
 
 None 
 
 None 
 
 None 
 
 None 
 
 None 
 
 None 
 
 None 
 
 1120.4 
 
 1.30 
 
 2.70 
 
 None 
 None 
 None 
 
 None 
 None 
 None 
 None 
 None 
 ^one 
 TTrace 
 None 
 
 1957 
 1958 
 1959 
 1960 
 1961 
 1962 
 
 •None 
 
 Trace 
 8.6 
 None 
 None 
 62.70 
 None 
 
 
 0.20 
 1.40 
 «.20 
 0.25 
 
 
 
 30.00 
 
 1886 
 1887 
 1888 
 
 None 
 
 8.20 
 
 •Zinc 23.16. 
 
 ZINO ORE 
 
 d 
 Y, 
 
 8 
 
 N 
 
 
 
 bjB 
 
 <! 
 
 8 
 
 s 
 
 
 S 
 
 d 
 
 S5 
 
 8 
 
 
 
 
 
 8 
 
 
 a 
 
 a 
 
 1964 
 
 """72" 
 
 
 
 
 
 
 
 B.7!. 
 14.171 
 34.00; 
 
 2.00 
 30.0 
 26.60 
 
 1970 
 1S71 
 1972 
 1973 
 1974 
 
 Trace 
 Trace 
 
 None 
 
 None 
 
 None 
 5.20 
 2.80 
 
 
 
 l.OB 
 
 1965 
 
 
 
 
 
 26.00 
 
 1966 
 
 None 
 None 
 None 
 None 
 
 
 
 
 
 0.60 
 
 1967 
 1968 
 
 7.63 
 5.10 
 
 Trace 
 Trace 
 
 63.20 
 34.80 
 
 1969 
 
 
 
 
 
 
 
 
 MERCURT ORE 
 
 i 
 
 8 
 
 d 
 
 8 
 
 tn 
 
 i 
 
 8 
 
 d 
 
 S5 
 
 8 
 
 1975 
 1976 
 
 51.9 
 
 Trace 
 
 68.54: 
 
 0.65! 
 
 3.82 
 
 4.66 
 
 13.1 
 
 0.7, 
 
 3.0 
 
 0.04 
 
 0.08 
 
 ' 1986 
 1987 
 1988 
 1989 
 1990 
 1991 
 1992 
 1993 
 1994 
 1995 
 1996 
 
 1.1 
 
 0.30 
 
 1.75 
 
 0.21 
 
 I5.20I 
 
 22.62, 
 
 0.7| 
 
 40.14 
 
 4.b| 
 
 3.42 
 
 0.2, 
 
 1997 
 1998 
 1999 
 2000 
 2001 
 •2002 
 2003 
 2004 
 2005 
 
 0.1 
 0.5 
 0.6 
 
 1.65 
 0.1! 
 
 0.31 
 2.7, 
 
 62.2 
 
 22.S 
 
 
 
 
 1977 
 
 
 
 1978 
 1979 
 
 
 
 1980 
 
 
 
 1981 
 
 
 
 1982 
 1983 
 
 
 
 
 1984 
 
 
 
 1985 
 
 
 1 
 
 
 
Chemical Analyses of Texas Rocks and Minerals .205 
 
 MANGANESE ORE 
 
 1 
 
 o 
 
 f^. 
 
 OS 
 
 1* 
 
 
 
 5 
 
 
 1 
 
 9 
 
 
 
 
 bo 
 
 1^ 
 
 .6 
 
 m 
 
 5 
 
 03 
 
 <5 
 
 1 
 
 2008 
 
 13.40 
 27.00 
 36.20 
 21.65 
 
 'ii'll 
 
 43.10 
 46.16 
 47. BO 
 
 59.70 
 10.66 
 1.90 
 9.06 
 31.60 
 11.78 
 14.90 
 17.30 
 18.46 
 15.16 
 13.87 
 ,9.66 
 
 None 
 
 0.054 
 
 62.70 
 
 
 
 
 
 
 
 
 
 
 200Y 
 
 52.0 
 
 8.54 
 
 11.12 
 
 ■4.15 
 9.09 
 3.09 
 
 53.85 
 41.31 
 57.65 
 
 8.80 
 3.45 
 3.20 
 
 0.75 
 1.51 
 3.24 
 
 Trace 
 0.24 
 
 Trace 
 0.03 
 
 "Hi 
 
 
 2008 
 
 
 
 
 
 2009 
 2010 
 
 "T28 
 
 Trace 
 Tlrace 
 
 
 
 "40"76 
 48.32 
 22.48 
 26.07 
 
 
 2011 
 
 3.06 
 
 Trace 
 
 1.48 
 
 6.04 
 5.81 
 6.79 
 16.39 
 4.00 
 9.92 
 4.31 
 3.15 
 6.8B 
 7.18 
 7.60 
 3.87 
 
 7.63 
 
 4.06 
 
 8.92 
 
 10.78 
 
 17.01 
 
 13.41 
 
 7.49 
 
 16.48 
 
 4.23 
 
 1.81 
 
 5.23 
 
 6.70 
 
 3.08 
 
 "iil5 
 
 7.50 
 25.88 
 
 7.30 
 8.86 
 9.60 
 19.20 
 20.68 
 U.81 
 3.70 
 4.42 
 10.34 
 10.34 
 8.47 
 6.91 
 
 0.73 
 9.74 
 8.90 
 
 Trace 
 Trace 
 Trace 
 
 
 
 3.00 
 
 66.S4 
 
 2012* 
 201S 
 
 Trace 
 Trace 
 Trace 
 
 0.25 
 0.32 
 0.27 
 0.29 
 0.61 
 
 'T48 
 0.25 
 0.25 
 0.23 
 
 
 
 36.12 
 
 2014 
 
 0.17 
 
 0.44 
 
 1.42 
 0.90 
 2.41 
 4.20 
 1.48 
 4.90 
 2.60 
 2.24 
 0.94 
 0.76 
 1.30 
 
 8.27 
 
 2W4a"r 
 1. 
 
 2. 
 
 11.37 
 31.07 
 85.42 
 19.65 
 10.59 
 31.02 
 17.16 
 34.43 
 37. OT 
 25.59 
 33.97 
 39.14 
 
 0.72 
 0.9B 
 0.80 
 0.60 
 1.16 
 3.62 
 1.20 
 1.23 
 0.91 
 0.91 
 
 Loss by 
 Igni- 
 tion 
 
 7.96 
 18.20 
 
 3. 
 
 4. 
 5. 
 
 
 
 23.70 
 1S.60 
 11.90 
 
 G> 
 
 ----- 
 
 
 
 16.56 
 
 7. 
 8. 
 9. 
 10. 
 
 ---- 
 
 
 
 21.90 
 23.60 
 28.20 
 24.2a 
 27.10 
 
 12. 
 
 0.80 
 
 0.19 
 
 
 Sl.GO 
 
 ♦Manganese Oxide, 29.04, 
 
 Tianium Ore 
 
 2015. Silica 2.40 
 
 Titanic oxid 27.80 
 
 Alumina 1.50 
 
 Oxide of iron 68.49 
 
 100.191 
 
 Tungsten Ores 
 
 Serial No. Tungstic oxide 
 
 2016 0.70% 
 
 2017 Trace 
 
 2018 2.20 
 
 2019 3.50 
 
 2020 17.70 
 
 2021 19.00 
 
 2022 10.80 
 
 2023 14.10 
 
 Uranium Ore 
 
 Serial No. Uranium Copper 
 
 2024 0.57% 2.00% 
 
 2025 0.95 none 
 
20fi 
 
 University of Texas Bulletin 
 NATURAL GAS 
 
 o 
 
 « 
 
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 .S 
 
 3 
 
 W 
 
 8 
 
 o 
 
 1 
 
 6 
 
 O 
 
 f5 
 
 
 P5 
 
 i 
 'i 
 
 OS 
 
 2116 
 
 None 
 None 
 0.20 
 None 
 None 
 None 
 
 None 
 
 O.80 
 
 0.30 
 
 0.30 
 
 None 
 
 None 
 
 8.40 
 0.70 
 0.40 
 0.20 
 
 None 
 2.2 
 
 None 
 None 
 .80 
 1.00 
 None 
 None 
 
 .80 
 Trace 
 
 .30 
 None 
 None 
 
 35.80 
 67.93 
 47.2 
 55.90 
 56.00 
 60.3 
 63.6 
 6.40 
 6.00 
 35.40 
 32.00 
 37.0 
 '37.20 
 38.60 
 65.6 
 90.00 
 84.00 
 85.4 
 90.4 
 98.40 
 98.30 
 88.10 
 •",8.50 
 34.8 
 74.0 
 87.4 
 64.00 
 79.0 
 78.20 
 64.00 
 84.30 
 74.00 
 74.8 
 42.4 
 80.8 
 92.0 
 86.2 
 66.3 
 87.80 
 
 '12^50 
 
 
 
 None 
 
 13.90 
 12.90 
 
 60.40 
 
 31.37 
 
 38.6 
 
 36.80 
 
 44.0 
 
 47.5 
 
 40.0 
 
 86.20 
 
 92.00 
 
 60.40 
 
 66.00 
 
 63.00 
 
 66.60 
 
 60.90 
 
 30.4 
 
 10.00 
 
 16.00 
 
 14.6 
 
 9.40 
 
 1.00 
 
 1.50 
 
 1.20 
 
 l.B 
 
 62.6 
 
 2.6 
 
 12.6 
 
 25.50 
 
 7.10 
 
 8.90 
 
 25.60 
 
 20.10 
 
 24.0 
 
 22.2 
 
 40.2 
 
 19.2 
 
 8.0 
 
 14.8 
 
 32.7 
 
 10.80 
 
 100.00 
 100.80 
 100. 00 
 100.00 
 100.00 
 100. CO 
 
 io6"o6 
 100. 
 
 100.00 
 lOO.OO 
 100.00 
 100.00 
 100.00 
 100.00 
 lOO.OO 
 100.00 
 100.00 
 lOO.OO 
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 lOO.OO 
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 100.00 
 100.00 
 100 00 
 
 SWi50 
 715.00 
 474.00 
 56: .00 
 649.00 
 503.0 
 684 
 77.90 
 54.96 
 SO'. 60 
 280.0 
 315.0 
 282.0 
 332.0 
 662.0 
 909. 
 932.0 
 862.0 
 913.0 
 l,fc47 
 1,047 
 1.045 
 1,052 
 300.5 
 947.0 
 882.0 
 784 
 1100 
 1072 
 784.42 
 463.0 
 TKr n 
 
 
 
 2117 _- 
 
 
 
 2118 
 
 
 
 2119 
 
 
 
 2120 
 
 
 
 2121 
 
 
 
 2122 
 
 
 
 2123 
 
 2124 
 
 2125 
 
 2126 
 
 2127 
 
 None 
 None 
 None 
 None 
 None, 
 None 
 None 
 None 
 
 None 
 None 
 None 
 None 
 None 
 None 
 None 
 None 
 
 None 
 
 None 
 
 3.40 
 
 0.20 
 
 None 
 
 None 
 
 None 
 
 4.00 
 
 None 
 None 
 None 
 None 
 None 
 None 
 None 
 None 
 
 7.40 
 2.00 
 0.80 
 0.60 
 
 None 
 0.80 
 0.80 
 
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 0.943 
 0.948 
 827 
 0.831 
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 2128 
 
 2129 — 
 
 0.834 
 
 
 2130 
 
 
 
 2130a 
 
 
 
 2131 
 
 2132 
 
 2133 
 
 None 
 
 None 
 
 None 
 
 0.60 
 
 0.20 
 
 0.70 
 
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 None 
 
 0.4 
 
 None 
 None 
 None 
 
 1.00 
 
 None 
 
 0.2 
 
 None 
 None 
 None 
 
 None 
 None 
 None 
 
 
 
 — 
 
 2134 
 
 0.57 
 
 0.66 
 0.57 
 0.56 
 
 
 2135 
 
 
 
 None 
 22.8 
 
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 2136 
 
 2137' 
 
 2138 
 
 2189 
 
 None 
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 "irio 
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 2141 
 
 2142 
 
 None 
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 "I'w 
 
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 None 
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 None 
 None 
 None 
 
 4.20 
 
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 2.00 
 
 None 
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 None 
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 None 
 
 0.90 
 
 None 
 
 None 
 
 0.90 
 
 2.60 
 
 1.70 
 
 3.70 
 
 None 
 
 2143 
 
 
 
 
 Z144 
 
 1.70 
 25.80 
 
 3.70 
 None 
 
 
 
 2146 
 
 
 
 2146 
 
 
 
 2147 
 
 None 
 
 None 
 
 Trace 
 
 0.6 
 
 0.60 
 
 'IT 
 
 None 
 None 
 None 
 None 
 
 3.0 
 
 2.6 
 
 None 
 
 None 
 
 None 
 
 0.4 
 
 0.80 
 
 100.00 755 
 
 
 2148 
 
 2149 
 
 100.00 
 
 100.00 
 
 100.00 
 
 lOO.OO 
 
 100.00 
 100.00 
 
 460 
 
 836.5 
 
 929 
 
 726.0 
 
 664 
 
 887 
 
 
 
 
 2150 
 
 2151 
 
 
 
 2152 
 
 Z1B3 - — 
 
 
 
 
Chemical Analyses of Texas Bocks and Minerals 207 
 
 
 
 d 
 
 
 
 
 
 
 
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 1874.00 
 758.00 
 
 2298.60 
 236.00 
 746.00 
 839.00 
 
 1318.00 
 
 1643.05 
 
 4430.10 
 244.00 
 
 230.00 
 
 2271.00 
 
 2333.00 
 
 3891.00 
 
 3424.00 
 
 
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 2.00 
 (.032) 
 
 0.40 
 (.065) 
 
 6.60 
 (.028) 
 
 9.70 
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 4.30 
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 1.41 
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 o 
 
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 s 
 
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 22.00 
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 3.96 
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 14.38 
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 24.00 
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 3.20 
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 30.70 
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 533.80 
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 371.60 
 
 (16.11) 
 
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 (.189) 
 
 4.10 
 
 (.33) 
 
 3.49 
 
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 (2.63) 
 
 51.00 
 
 (4.19) 
 
 64.00 
 
 (4.44) 
 
 262.40 
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 3.80 
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 6.80 
 
 (.34) 
 
 63.20 
 
 (3.16) 
 
 38.70 
 
 (1.93) 
 
 .61.00 
 
 (3.05) 
 
 139.00 
 
 (6.95) 
 
 82.00 
 
 (4.10) 
 
 658.40 
 
 (23.92) 
 
 63.75 
 
 (3.18) 
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 (.365) 
 
 .11.00 
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 (3.96) 
 
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Chemical Analyses of Texas Bocks and Minerals 209 
 
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 244.6 
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 229.0 
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 193.00 
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 446.0 
 
 14.86 
 
 11.84 
 
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 630.0 
 
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 119.9 
 
 (1.96, 
 
 143.9 
 
 (2.36) 
 
 114.4 
 
 (3.81) 
 
 19.60 
 
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 119.9 
 
 (4.00) 
 
 78.0 
 
 (2.6) 
 
 180.2 
 (6.00) 
 
 208.85 
 
 (6.96) 
 
 135.48 
 
 (4.516) 
 
 65.33 
 
 (1.84) 
 
 160.00 
 
 (5.00) 
 
 74.80 
 
 (2.49) 
 
 14.00 
 
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 12.00 
 
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 164.68 
 
 (5.48) 
 
 167.01 
 
 (6.23) 
 
 47.18 
 
 (1.21) 
 
 10.28 
 
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 .617 
 
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 4.69 
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 22.98 
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 21.66 
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Chemical Analyses of Texas Bocks and Minerals 211 
 
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 er. 
 
 S 
 
 a 
 
 s 
 
 ^ 
 
 o 
 
 
 04 
 
 
 te 
 
 SS 
 
 B 
 
 o 
 
 d 
 
 s s 
 
248 
 
 University of Texas Bulletin 
 
 <I> 
 
 •rH 
 
 el 
 o 
 O 
 
 
 
 0+ « 
 
 2 3 
 
 S S 
 
 S 
 
 e 
 
 8 S 
 
 • O (-1 - • 
 
 I I I 
 
 8 8 
 
 S S S 
 
 J2 C 
 
 I I 
 
 rSss; 
 
 - so r- 00 O Q 
 
 3 T~l COM 00 uS 
 
 "■ i - 1-1 
 
 rH CO -W Cfi OOO 
 
 • t> • OJ ■ O 
 
 l> • C •00 • 
 
 S-* tc> eo o CO 
 
 • -^ ■ Tfl - ^ 
 
 g* M • CO • 
 (N i-i CO CO Irt 
 COIM d '-'CO ^-' 
 
 ^S ::^S S>2 :::^ 2? r^K i=-£2 C?y i 
 
 i"* (O S "*S c 
 
 
 t-c4Coe4i-Hcoia-v 
 
 TDi-liHv. 
 
 Si 
 
 5 t^SS'cM to C<1 Ig OO OT (N t^iH ^toSoSS 
 ^ <N . to ^- -* ^ . t^ - M *"■ CO -1-4 • t- ■ 
 
 3rHt-COCOi— lt-C0!0lOiOC0O«0(N(MQ0eO 
 
 *— ' i-( ^w* o c-1 i-H^-'oj*-^i-i^^eo^^co !-> i-iN-/ 
 
 5 .<A- 
 
 5*— 'la^-' 
 
 i-it-ot*soiooot^a 
 
 COt-CDCOOOOfHOOOC' 
 
 CO O 
 
 COcoO-*I<l>i:-ai-lrHi-<CO-^tk OOOSOO(OM(Nl^*Ol5ffiC^^it< OOt-C- C-l 00 rH c~ in o O 
 
 • rH -M -t- --rH • 56 - (© ~ • <N • ■* • CO • S -O -CO -CO -O - rH -la -t- 
 
 (MrHCOr-i5i'*oi4oO;Jr-r-eOt-COrHlflI>eOOOCOOOO 
 \~^ ^~' -^^ v^COr-' ^~' ^~^r^^^^ v^CQrHC^w 
 
 t- CO -WOJ 
 
 iSSSSS? 
 
 o S'S « 
 
 ^g?s®.S^S^S^i^§^s^s^E^£ 
 
 C^rHC0C0ioC0lQ(N-*<^OCOt-O Oi<5rH(OC-(S>'*t-rHtf)C>lO-*»'IJ'Jt-TlH>Oii-t»-He^(N 
 OCjSlOCMCfl"i»t&aSw (MrHriO lr-o6cOtdoQ-*lSeJ&oioC5«tdSiniOI>rHOt~CC 
 
 8 fi S e S 
 
 S s i j s 
 
 B -* ® -^ ^ t<' ^ i i 
 
 O O -3 II 
 
 s s 
 
 8 S 
 
 S 8 
 
 e ? 
 
 &H EH 
 
 M CI w 
 
 s s 
 
Chemical Analyses of Texas Bocks and Minerals 249 
 
 3008.28 
 
 4114.11 
 
 6262.0* 
 
 61,863.00 
 
 263.91 
 
 105. 5» 
 
 686.00 
 262.40 
 
 : ! 1 1 ! 1 1 1 1 1 1 
 1 1 1 1 1 ! 1 1 1 1 
 1 ! 1 1 1 1 1 1 1 1 
 
 III 1 
 j j 1 1 
 
 1 1 1 I 1 1 1 I 1 1 1 1 1 1 
 I i i i M 1 i 1 1 M I 1 
 
 805.85 
 
 (22.64) 
 
 976.00 
 
 (27.49) 
 
 1788.90 
 
 (60.40) 
 
 88.00 
 
 (2.47) 
 
 77.70 
 
 (2.19) 
 
 10.61 
 
 (0.08) 
 
 92.60 
 (2.60) 
 391.20 
 (11.02) 
 
 20.96 
 (0.68) 
 
 1 1 ! ; 1 ! 1 II 
 1 1 1 1 1 1 1 1 1 1 1 
 1 1 1 1 1 1 1 1 1 1 1 
 
 t 1 1 
 
 1 1 i 
 
 1 i 1 
 
 912.60 
 (19.01) 
 1514.89 
 (31.66) 
 2126.30 
 (44.30) 
 36.852.00 
 (767.75) 
 
 
 
 14.00 
 (0.30) 
 
 26.43 
 (0.65) 
 
 324.26 
 (6.31) 
 472.00 
 (7.74) 
 90.60 
 (1.60) 
 
 366.00 
 (6.00) 
 46.40 
 (0.76) 
 
 
 
 49.13 
 
 (1.64) 
 42.08 
 (1.40) 
 
 104.16 
 (3.47) 
 107.50 
 (3.69) 
 
 M 1 8 i i _ ^ i i 
 
 S co^SSS'd o S" CO COOS'S S"o5"NS"io£'i-i (oc6iOWinSS"Ko»d£ 
 
 • ^ .O - iH - Oj ■ ir; -co • lo • Tti 
 
 CO O « C4 Q 
 
 65.61 
 (5.39) 
 319.90 
 (26.31) 
 150.20 
 (12.52) 
 413.00 
 (33. K) 
 Tr 
 
 6.94 
 (0.67) 
 
 16.3 
 (1.20) 
 
 3.71 
 (0.31) 
 
 5.07 
 (0.42) 
 
 356.65 
 (17.83) 
 
 641.80 
 (32.09) 
 
 557.40 
 
 (27.87) 
 
 1644.00 
 
 (82.20) 
 
 Tr 
 
 14.28 
 (0.71) 
 
 149.00 
 (7.46) 
 9.84 
 (0.49) 
 44.76 
 (2.24) 
 
 s i i i i i i i i i a 
 
 Tr 
 
 3,096.00 
 
 Tr 
 
 12.00 
 
 42. 
 Tr 
 
 Tr 
 
 33.30 
 
 840.80 
 
 49.00 
 
 10.00 
 
 366.80 
 10.00 
 
 CB O 
 
 o S 
 
250 
 
 University of Texas Bulletin 
 
 KLEINITE 
 
 Serial No. 
 
 3012 
 
 3013 
 
 3014 
 
 8015 
 
 3016 
 
 3017 
 
 3018 
 
 3019 
 
 3020 
 
 3021 
 
 He - 
 
 84.55 
 7.25 
 3.06 
 2.54 
 
 iTo9 
 
 84.40 
 7.21 
 2.92 
 2.50 
 0.48 
 1.75 
 
 S4.77 
 7.23 
 2.98 
 2.52 
 0.75 
 1.07 
 
 82.69 
 7.05 
 
 "~2T49 
 
 '"2.I7 
 
 83.19 
 7.05 
 3.07 
 
 i"io 
 
 2.86 
 0.46 
 
 
 
 94.7? 
 7.22 
 3.09 
 
 2.575 
 
 ""T04 
 
 84.90 
 7.1! 
 3.06 
 
 85.86 
 
 SOi 
 
 7.06 
 
 2.632 
 
 '"o.S7 
 
 7.04 
 
 1.19 
 
 0.99 
 
 7.30 
 
 
 2.67 
 
 H20 
 
 Son.— Vol. 
 
 CO2 
 
 l.DS 
 
 
 98.46 
 
 99.26 
 
 99.32 
 
 94.70 
 
 97.73 
 
 10.46 
 
 ----- - 
 
 108.69 
 
 92.32 
 
 99 E6 
 
 
 
 TEELINGUAITE 
 
 
 
 Serial No. 
 
 3022 
 
 Hg 
 
 01 
 
 
 
 88.61 
 7.83 
 3.75 
 
 
 
 
 
 Total - 
 
 100.19 
 
 EGLESTONITE 
 
 Serial 
 No. .. 
 
 3023 
 
 3024 
 
 3025 
 
 Hg. .. 
 
 01 
 
 
 
 88.33 
 8.32 
 1.72 
 
 88.94 
 8.23 
 1.84 
 
 89.73 
 8.12 
 1.80 
 
 
 
 
 
 
 
 
 
 
 
 
 Total - 
 
 98.37 
 
 99.01 
 
 99.65 
 
 ASBOLTTB 
 
 BAUXITE 
 
 Serial No. 
 
 3027a 
 
 3D27b 
 
 3027c 
 
 Vol. Matter .. _ . 
 
 10.06 
 
 27.10 
 60.00 
 
 45.80 
 
 33.60 
 
 4.60 
 
 2.56 
 
 4.60 
 
 44.00 
 
 Ala Os 
 
 29 60 
 
 Si 0^ — . . 
 
 
 Nas . .. .. . 
 
 3.05 
 
 K2 - 
 
 
 4.65 
 
 OaO 
 
 1.07 
 1.12 
 
 
 Mg - 
 
 
 
 Sol.NaOH ., 
 
 aoi. HOI — 
 
 97.90 
 9S.06 
 
 94.85 
 88.08 
 
Chemical Analyses of Texas Rocks and Minerals 251 
 
 
 GADOLINITE 
 
 
 
 Serial No 
 
 3028 
 
 3029 
 
 3030 
 
 3031 
 
 3032 
 
 SiOa 
 
 AlsOt 
 
 22.87 
 0.28 
 
 23.40 
 0.33 
 
 23.79 
 
 'Toe 
 
 12.46 
 2.62 
 5.22 
 
 141.56 
 
 Trace 
 11.33 
 
 0.74 
 Trace 
 
 68 
 Trace 
 Trace 
 
 0.05 
 
 "iToi 
 
 22.80 
 0.31 
 
 22.92 
 0.29 
 
 FeO 
 
 OeaOa 
 
 (La, I>i)203 - 
 TsOs . — - 
 
 13.69 
 2.6; 
 5.22 
 
 13.58 
 2.7f, 
 5.17 
 
 12.93 
 2.67 
 5.01 
 
 13.03 
 2.Sj 
 6.33 
 
 
 "44T45 
 0.18 
 
 "44^35 
 N.D. 
 
 (T,Er)203 
 
 MnO 
 
 QIO 
 
 44.35 
 0.22 
 
 44.66 
 N.D. 
 
 OaO 
 
 MgO 
 
 0.64 
 0.07 
 
 0.64 
 0.08 
 
 0.71 
 0.11 
 
 0.78 
 N D. 
 
 
 K2O 
 
 NaaO 
 
 P2O5 - 
 
 0.16 
 0.20 
 
 N.D. 
 
 0.12 
 0.23 
 
 N. D. 
 N. D. 
 
 BeO 
 
 0.24 
 
 9.32 
 
 9.19 
 
 9.34 
 
 HzO - 
 
 Igneoiis 
 
 H2S04 
 
 
 
 
 
 0.79 
 0.93 
 
 N.D. 
 0.92 
 
 Vol. Mat. 
 
 0.72 
 
 
 
 
 
 
 
 
 Total . 
 
 100.30 
 
 
 
 100.29 
 
 100.42 
 
 
 
 CHALOOCITE 
 
 NODULES 
 
 Serial No. 
 
 3033 
 
 Au 
 
 Trace 
 
 Ag 
 
 3.36 oz. 
 
 
 perT. 
 
 Cu 
 
 39.367o 
 
 Pe 
 
 0.40% 
 
 SiOs 
 
 11.00% 
 
 AI2O3 .— 
 
 1.40% 
 
 OaO 
 
 1.40% 
 
 S 
 
 12.90% 
 
 
 
 SOAPSTONE 
 
 Serial No. 
 
 3035 
 
 SiOs 
 
 AI2O3 ... 
 
 PeaOa 
 
 OaO 
 
 29.32 
 62.24 
 0.76 
 
 MgO 
 
 H2S04 — 
 
 Vol Mat.- 
 
 6.01 
 1.16 
 10.9d 
 
 OHALOOOITE 
 PSE0DOMOBPH 
 
 Serial No. 
 
 3034 
 
 Au 
 
 Ag 
 
 Ou .- 
 
 Pe 
 
 OaO - 
 
 S 
 
 Trace 
 
 0.10 oz. 
 
 perT. 
 
 60.00% 
 1.80% 
 1.90% 
 13.20 
 
 Insoluble g 
 
 8.20% 
 
 BORAX 
 
 Serial No. 
 
 3038 
 
 Inaol. sul- 
 piiates of 
 Oa.Mg.Na 
 
 NaOl 
 
 Borax 
 
 73.00 
 18.30 
 8.70 
 
 
 
 Total 
 
 100.00 
 
 BAETTE 
 
 Serial No. 
 
 3036 
 
 Si02 
 
 Pe203 
 
 Ti02 
 
 BaO 
 
 OaO 
 
 MgO 
 
 HaSOi ... 
 Vol Mat. 
 
 2.08 
 
 2.38 
 
 Trace 
 
 68.74 
 1.17 
 0.43 
 
 33.24 
 1.86 
 
 Total . — 
 
 99.90 
 
 HALLOTSITE 
 
 Serial No. 
 
 3037 
 
 SiOa 
 
 42.03 
 
 AI2O3 .... 
 
 39.26 
 
 PezOs 
 
 0.41 
 
 OaO 
 
 0.29 
 
 Water be- 
 
 
 low IOC- 
 
 2.69 
 
 Water 
 
 
 above 100° 
 
 15.52 
 
 Total — . 
 
 WOLPEAMITE 
 
 Serial No. 
 
 3089 
 
 3040 
 
 
 
 Tungatic oxide 
 
 21.00% 
 
 3.00% 
 
 EOWLANDITE 
 
 Serial No. 
 
 3041 
 
 Si02 
 
 26.04 
 
 X 
 
 0.S9 
 
 ThOs 
 
 0.E9 
 
 CezOa . .. 
 
 5.06 
 
 LazOa 
 
 9.34 
 
 Tt203 ... 
 
 47.70 
 
 lezOa .. . 
 
 0.09 
 
 FeO 
 
 4.39 
 
 MnO 
 
 0.67 
 
 OaO 
 
 0.50 
 
 MgO 
 
 1.62 
 
 Alkalies . 
 
 0.28 
 
 H2O 
 
 0.24 
 
 OOs 
 
 0,34 
 
 P 
 
 3.87 
 
 P2O6 .... 
 
 Tr 
 
 Total .... 
 
 101.12 
 
 SPESSAKTITE 
 
 Serial No. 
 
 3042 
 
 Si03 
 
 35.93 
 
 PezOa 
 
 460 
 
 AisOa ._. 
 
 18.08 
 
 MnO 
 
 31.77 
 
 CaO 
 
 8.48 
 
 Ba(0H2) 
 
 Tr 
 
 MgO 
 
 0.69 
 
 K2O 
 
 ( 
 
 N02O .._. 
 
 ) 0.17 
 
 Titanic .. 
 
 ^ 
 
 Acid 
 
 ) Tr 
 
 Loss at 
 
 ( 
 
 105" 
 
 ) 0.03 
 
 Loss on 
 
 ! 
 
 Ignition . 
 
 ) 0.36 
 
 Total .... 
 
 100.11 
 
252 
 
 University of Texas Bulletin 
 
 THOKOGUM- 
 MITE 
 
 Serial No. 
 
 3043 
 
 SIOj 
 
 13.085 
 
 UOs 
 
 22.43 
 
 ThOs 
 
 41.44 
 
 AI2OS 
 
 0.965 
 
 FeaOs 
 
 0.845 
 
 (Oe,T)!!Oa 
 
 6.69 
 
 PbO 
 
 2.16 
 
 CaO . .. 
 
 0.41 
 
 HaO 
 
 7.88 
 
 HsPOi - 
 
 1.19 
 
 MoiBture- 
 
 1.23 
 
 
 :::;:::: 
 
 Total .... 
 
 gS.325 
 
 NIVENITE (Uraninite) 
 
 Serial No. .. 
 
 3oa 
 
 3045 
 
 UO3 . 
 
 20.89 
 
 • 46.75 
 
 DOj 
 
 44.17 
 
 19.88 
 
 ThOj 
 
 6.69 
 
 7.67 
 
 ZrOs 
 
 0.34 
 
 
 CeOa 
 
 0.S4 
 
 
 (La,Di)20« . 
 
 2.36 
 
 
 (T,Er)205 .. 
 
 9.46 
 
 
 OaO 
 
 0.32 
 
 
 FbO .. 
 
 10.08 
 
 10.16 
 
 H2O l. 
 
 1.48 
 
 2.54 
 
 He 
 
 O.OS 
 
 
 SiOa 
 
 0.46 
 
 
 I^aOa ... . 
 
 0.14 
 
 0.68 
 
 Insoluble 
 
 1.47 
 
 1.22 
 
 T2O3 
 
 ... 
 
 11.22 
 
 Total 
 
 98.28 
 
 
 FEBGUSONITE 
 
 Serial No. - 
 
 3046 
 
 8047 
 
 CbzOs — .:.- 
 
 46.27 
 
 42.79 
 
 UO3 
 
 1.64 
 
 3.12 
 
 aoi 
 
 
 3.93 
 
 Th02 
 
 S.38 
 
 0.83 
 
 AI2O3 
 
 O.OS 
 
 0.85 
 
 1^6203 . . 
 
 0.98 
 
 S.76 
 
 Y2O3 
 
 42.33 
 
 31.86 
 
 PbO' 
 
 1.43 
 
 1.94 
 
 ZnO 
 
 0.24 
 
 
 CaO 
 
 0.10 
 
 2.74 
 
 MgO 
 
 0.04 
 
 
 Ix>sa on 
 
 
 
 ignition 
 
 i.se 
 
 7.57 
 
 ffiiO 
 
 0.04 
 
 0.62 
 
 F 
 
 O.Sl 
 
 0.602 
 
 
 
 
 Total 
 
 99.33 
 
 100.00 
 
 MACKINTO SHITE 
 
 
 Serial' No. .. 
 
 3048 
 
 3049 
 
 
 Si02 
 
 13.90 
 
 13.92 
 
 
 XKh 
 
 22.40 
 
 21.86 
 
 
 Zr02 (?) 
 
 0.88 
 
 1 
 
 
 ThOi 
 
 45.30 
 
 ! 
 
 
 06203 (?) .. 
 
 Lost 
 
 
 La20s . 
 
 1.86 
 
 
 
 T2O8 
 
 
 
 PbO 
 
 3.74 
 
 S.02 
 
 
 PeO . 
 
 1.15 
 
 
 
 OaO 
 
 0.59 
 
 0.44 
 
 
 MgO.... 
 
 0.10 
 
 0.13 
 
 
 K2O 
 
 0.42 
 
 0.70 
 
 
 (Na.Li)20 - 
 
 0.68 
 
 
 P2OB 
 
 0.67 
 
 0.46 
 
 
 Water above 
 
 
 
 
 .'■0' 
 
 4.31 
 
 
 
 Water below 
 
 
 
 
 100" 
 
 0.50 
 
 0.35 
 
 
 
 
 
 
 
 
 
 
 
 - 
 
 
 
 
 
 
 Total 
 
 96.50 
 
 
 
 TENGEBITE 
 
 Serial No. 
 
 3050 
 
 T2OS 
 
 40.80 
 
 Ce20a . 
 
 7.00 
 
 Pe203 
 
 4.00 
 
 GIO 
 
 9.70 
 
 r02 
 
 19.60 
 
 Water be- 
 
 
 low lOO'. 
 
 S.20 
 
 Water 
 
 
 above 100" 
 
 14.10 
 
 Si02 
 
 0.40 
 
 Total .... 
 
 98.80 
 
 METAGADO- 
 
 LI^TE 
 
 5prlal 
 
 No. 
 
 S061 
 
 Si02 
 
 
 18.146 
 
 OeaOi 
 
 
 20.662 
 
 FeaOs 
 
 
 26.026 
 
 T2O3 
 
 
 21.Si4 
 
 CaO 
 
 
 3.642 
 
 MgO 
 
 
 0.214 
 
 H2O 
 
 
 9,761 
 
 
 
 
 Total 
 
 lOO.SO 
 
 TTTEIAI/ITE 
 
 Serial No. 
 
 3053 
 
 3054 
 
 BiOa 
 
 PeO 
 
 29.17 
 2.89 
 0.55 
 0.60 
 
 0.854 
 
 12.00 
 0.77 
 1.86 
 
 46.50 
 2.94 
 0.83 
 0.79 
 
 , 29.63 
 1.90 
 
 M2OS 
 
 OaO 
 
 0.67 
 
 PbO 
 
 0.80 
 
 ThOa 
 
 MnO 
 
 10.85 
 0.88 
 
 06203 
 
 Y2O3 
 
 (La, I>i)203- 
 UOs 
 
 8.07 
 43.45 
 6.18 
 1.64 
 
 Loss Ignition 
 MsrO - . 
 
 0.16 
 
 Titania 
 
 
 0.05 
 
 
 
 0.76 
 
 OOa 
 
 
 0.11 
 
 PsOs 
 
 
 0.12 
 
 A, He and 
 
 
 0.31 
 
 Water 
 at 105" 
 
 
 0.32 
 
 Water 
 above 105"... 
 
 
 0.04 
 
 
 
 
 Total 
 
 99.76 
 
 100.00 
 
Chemical Analyses of Texas Bocks and Minerals 25'6 
 
 POWEHLITE 
 
 Serial No. 
 
 3052 
 
 Si02 
 
 AI2O3 .— 
 
 FeaOs 
 
 CaO 
 
 MgO 
 
 CuO 
 
 M0O3 — . 
 
 WO3 
 
 M0S2 
 
 H»0 
 
 Insoluble 
 
 None 
 
 None 
 
 None 
 
 27.46 
 
 None 
 
 None 
 
 67.90 
 
 None 
 
 1.60 
 
 2.33 
 
 0.88 
 
 Total .— 
 
 100.07 
 
 TEPHEOITE 
 
 Serial No. 
 
 3055 
 
 SiOa 
 
 28.97 
 
 Pe203 
 
 5.62 
 
 A1203 — - 
 
 2.46 
 
 MnO 
 
 68.86 
 
 CaO 
 
 0.30 
 
 MgO 
 
 0.80 
 
 Na20 
 
 0.27 
 
 CO2 
 
 2.92 
 
 Total 
 
 99.70 
 
 ANDRADITE 
 
 3».rial No 
 
 3066 
 
 3057 
 
 Si02 
 
 37.24 
 31.17 
 Trace 
 20.11 
 10.16 
 
 36.24 
 
 Fe20s. — — 
 
 AI2OS 
 
 MnO 
 
 OaO 
 
 15.91 
 11.23 
 30.72 
 2.04 
 
 MgO 
 
 2.22 
 
 MgO 
 
 Alkalies 
 
 1.3i! 
 
 i'.el 
 
 (Difference) 
 
 
 
 Total 
 
 100.00 
 
 100.00 
 
 ONYX 
 
 Serial No. — 
 
 3058 
 
 3069 
 
 SiOz 
 
 0.30 
 0.90 
 Trace 
 64.80 
 Trace 
 Trace 
 44.30 
 None 
 
 0.30 
 
 AI2OS 
 
 PftzOs 
 
 CaO - 
 
 1.00 
 Trace 
 64.70 
 
 MgO 
 
 Trace 
 
 Alkalies 
 
 OO2 
 
 Trace 
 42 60 
 
 Organic Mat. 
 
 2.20 
 
 Total 
 
 100.30 
 
 100.80 
 
 CELESTITE 
 
 Serial No. 
 
 306O 
 
 SrSOi — - 
 
 9S.0p 
 
 AUGITE 
 
 Serial No. 
 
 3061 
 
 Si02 
 
 45.23 
 
 AI2O3 
 
 7.73 
 
 FezOa 
 
 2.95 
 
 FeO 
 
 4.07 
 
 MgO 
 
 12.25 
 
 CaO 
 
 23.37 
 
 Na20 
 
 0.47 
 
 K2O 
 
 0.12 
 
 H2O 
 
 0.37 
 
 Titanium 
 
 
 oxide 
 
 4.28 
 
 P2O5 
 
 None 
 
 NiO 
 
 0.05 
 
 MnO 
 
 o.or 
 
 SrO 
 
 None 
 
 Ba(0H)2 - 
 
 None 
 
 Li20 
 
 Trace 
 
 Total 
 
 100.06 
 
 GRAHAMITE 
 
 Serial No. .. 
 
 3063 
 
 3064 
 
 Moisture 
 
 ITol- com 
 
 matter 
 
 Fixed carbon 
 Ash 
 
 0.30 
 
 44.00 
 
 62.80 
 
 2.90 
 
 None 
 
 57.80 
 37.70 
 
 
 
 Total 
 
 100.00 
 
 100.00 
 
 NITRATE SOURCES 
 
 3161 
 3162 
 
 NaN03, 25.0 % 
 NaNOs, 5.0 % 
 Na2SOi 3.28% 
 
 Potassium salts— trace. 
 
 Carbonates— absent . 
 
 A sample of 125 lbs. from the 
 same sources contained only 0.43% 
 of sodium nitrate. 
 
254 
 
 University of Texas Bulletin 
 
 JET 
 
 Serial No. 
 
 3062 
 
 Moisture . 
 Vol. com. 
 
 matter — 
 Fixed 
 
 carbon 
 
 Ash 
 
 2.20 
 
 59.08 
 
 37.52 
 1.20 
 
 Total - — 
 
 100.00 
 
 ALLANITE 
 
 Serial No. 
 
 8065 
 
 Si02 
 
 FeaOs 
 
 Cerium 
 earth .- 
 AlaOs .— 
 OaO 
 
 29.21 
 S0.33 
 
 25.06* 
 12.20 
 3.69 
 
 Total — - 
 
 100.49 
 
 ►Na203=4.76. 
 Pra03=2.31. 
 
 GRAPHITE 
 
 Serial No. 
 
 Graphite 
 
 3073 
 
 10.30% 
 
 3074 
 
 14.50% 
 
 EPSOMITE 
 
 Serial No. 
 
 3070 
 
 3071 
 
 Water .^ 
 
 SiOs 
 
 -' 40.07 
 20.07 
 2.20 
 2.20 
 12.381 
 Tr 
 24.01 
 
 40.00 
 21.43 
 
 AI2O3 ) 
 
 Fe-Os S 
 
 MgO 
 
 CaO — , -„ 
 SOa 
 
 2.21 
 
 2.21 
 
 12.38 
 
 "liroi 
 
 Total 
 
 99.74 
 
 100.03 
 
 SULPHnB 
 
 1 
 
 3 
 
 li 
 
 1 
 
 m 
 
 3075 
 
 8076 
 
 64.00 
 40.B0 
 74.90 
 15.80 
 14.00 
 14.370 
 20.70 
 12.70 
 S4.40 
 10.10 
 41.40 
 36.80 
 41.80 
 30.10 
 3.20 
 90.80 
 
 Not 
 tested 
 
 
 
 3078 
 
 
 8079 - - 
 
 
 
 
 3081 
 
 None 
 
 3082 _ 
 
 
 3083 
 
 3084 
 
 3085 — 
 
 
 3086 
 
 
 3087 
 
 
 3O88 
 
 
 3089 
 
 
 3090 
 
 
 3091 
 
 79.20 
 20.40 
 
 None 
 
 3092 
 
 
 
 
 SULPHUR 
 
 
 
 
 
 
 Serial No. 
 
 3093 
 
 3094 
 
 3096 
 
 3096 
 
 S097 
 
 3098 
 
 3098a 
 
 3098b 
 
 
 
 SiOa 
 
 2.34 
 0.15 
 1.95 
 
 10.66 
 
 0.08 
 
 33.48 
 
 34.54 
 
 11.44 
 
 16.69 
 
 0.67 
 
 Trace 
 
 e.7B 
 
 1.01 
 
 5.08 
 
 1.70 
 
 0.70 
 
 1.16 
 
 9.28 
 
 10.50 
 
 37.20 
 0.27 
 1.63 
 
 8.60 
 
 0.32 
 
 11.28 
 
 49.34 
 0.16 
 0.18 
 
 
 
 FeaOs — 
 
 
 
 AI2O3 
 
 
 
 Titanic acid 
 
 
 
 P2O11 
 
 
 
 Trace 
 19.76 
 0.61 
 30.60 
 1.00 
 0.34 
 0.34 
 7.64 
 1.40 
 
 
 
 
 
 OaO 
 
 MgO 
 
 — 31.72 
 0.36 
 28.87 
 3.16 
 4.89 
 0.08 
 10.10 
 16.04 
 
 2.50 
 0.34 
 
 '"is'35 
 6.14 
 0.19 
 2.00 
 31.25 
 
 5.72 
 0.30 
 19.23 
 22.00 
 1.24 
 1.32 
 10.06 
 20.14 
 
 1.S5 
 0.32 
 
 
 
 SOs 
 
 
 
 Sulphur, free 
 
 NazO 
 
 46.00 
 
 52.00 
 
 82.60 
 
 K2O 
 
 
 
 
 Moisture - _ - 
 
 2.30 
 0.86 
 
 
 
 
 
 
 
 
 
 Total 
 
 99.66 
 
 99.99 
 
 99.53 
 
 100.69 
 
 100.21 
 
 100.61 
 
 
 
 
 
 
Chemical Analyses of Texas Bocks and Minerals 255 
 
 POTASH 
 
 Sizi 
 
 3099 - 
 
 5100 - 
 
 5101 - 
 3102 . 
 3109 . 
 3101 - 
 3105 - 
 S106 - 
 
 3107 . 
 
 3108 - 
 
 3109 - 
 
 3110 - 
 
 aiii . 
 
 3112 . 
 
 3113 - 
 
 ni4 . 
 
 S115 - 
 
 iiie . 
 
 3117 - 
 
 ni8 - 
 
 3119 . 
 
 3120 _ 
 
 3121 . 
 
 5122 . 
 
 3123 - 
 
 3124 - 
 
 5123 _ 
 S126 . 
 
 3127 ., 
 
 3128 . 
 
 3129 - 
 
 3130 - 
 
 3131 . 
 
 3132 .. 
 
 ■♦J 
 
 1°%. 
 
 •S 03 ,Q 
 
 0.99 
 1.16 
 0.45 
 0.94 
 0.98 
 0.70 
 0.43 
 
 o.n 
 
 0.31 
 0.68 
 0.25 
 0.43 
 0.26 
 0.49 
 0.68 
 0.43 
 2.07 
 9.23 
 1.74 
 0.62 
 0.91 
 0.37 
 0.37 
 0.33 
 0.31 
 0.64 
 0.49 
 0.47 
 0.49 
 0.56 
 6.14 
 1.72 
 2.79 
 10.60 
 
 WOOD 
 
 Serial No. 
 
 Ash (%) 
 
 B. t. u'a. 
 
 Kind 
 
 3148 
 
 3.10 
 
 8,650 
 
 Mesquite 
 
 3149 
 
 3.34 
 
 8,027 
 
 Mulberry 
 
 3150. 
 
 2.16 
 
 8.416 
 
 Big Post Oak 
 
 3151 
 
 1.24 
 
 7,762 
 
 Sycamore 
 
 3152 
 
 i.94 
 
 8,728 
 
 Hickory 
 (Pecan) 
 
 3163 
 
 2.50 
 
 9,118 
 
 Long Leaf 
 Yellow Pine 
 
 3154 
 
 O.50 
 
 
 Chinaberry 
 
 3155 
 
 1.12 
 
 8,768 
 
 B»=i<.-on Pi;w. 
 
 3156 
 
 3.22 
 
 8,463 
 
 Winow 
 
 
 BAT 
 
 GUANO 
 
 
 Id 
 
 s 
 
 e9 
 
 3143 
 
 
 13.66 
 26.53 
 36.60 
 
 12.16* 
 
 3144 
 
 
 11.02* 
 
 3145 
 
 
 6.73 
 
 9146 
 
 
 8.10 
 
 S(147 
 
 
 
 11.44 
 
 
 
 
 
 *K]eldahl (exclusive of ni- 
 trates.) 
 
2f/t) 
 
 University of Texas Bulletin 
 
 METEEOEIC lEON 
 
 Serial 
 No. -.- 
 
 1 
 3133 
 
 3134 
 
 3135 
 
 3136 
 
 3137 
 
 3138 
 
 .8139 
 
 3140 
 
 3141 
 
 3142 
 
 SiQz 
 
 # 
 
 
 
 37.70 
 
 2.17 
 3.47 
 23.82 
 
 
 
 
 
 44.75 
 2.72 
 1.83 
 
 16.04 
 0.62 
 0.22 
 
 TraS 
 
 0.182 
 
 AI2OS 
 
 
 
 
 
 
 
 
 
 Fe 
 
 PeO 
 
 93.75 
 
 94.02 
 
 20.80 
 
 86.64 
 
 94.90 
 
 89.68 
 
 Trace 
 
 Trace 
 
 9.20 
 
 91.958 
 
 7.86 
 
 90.769 
 
 
 
 
 
 
 
 
 Ni 
 
 NiaOa 
 
 5.61 
 
 6.429 
 
 0.28 
 
 0.65 
 1.69 
 0.09 
 0.16 
 
 12.77 
 
 """Tea 
 
 4.87 
 
 S.342 
 
 Co 
 
 0.52 
 
 Trace 
 
 
 
 0.33 
 
 Trace 
 
 0.i6S 
 
 Ma . . 
 
 
 
 
 
 Trace? 
 
 ""2.% 
 
 Trace 
 
 MnO 
 
 
 ' 
 
 
 0.45 
 S.20 
 25.94 
 
 
 
 
 
 CaO - 
 
 
 
 
 
 
 
 
 27.9S'-i 
 
 MgO 
 
 
 
 
 
 
 
 
 O.I3I 
 
 K2CO3 
 
 
 
 
 
 
 
 
 1.13' 
 
 Na20C>s 
 
 
 
 
 
 
 
 
 0.099 
 
 0.41' 
 
 p _ 
 
 0.20 
 
 
 
 
 0.16 
 
 0.23 
 
 0.158 
 
 
 0.141 
 
 H3PO1 — 
 
 
 
 0.25 
 1.30 
 
 0.032 
 
 oloii 
 
 0.04 
 
 0.41 
 
 S 
 
 0.06 
 
 
 
 0.03 
 
 0.11 
 
 Trace 
 
 Trace 
 
 0.017 
 
 1.83, 0.016 
 
 c 
 
 
 
 — 0.19 
 
 Si 
 
 
 
 
 
 
 Cu 
 
 
 
 
 
 0.02 
 
 
 0.037 
 
 Tr.CuO 0.018 
 
 Sn 
 
 
 
 
 
 
 O.O04 
 
 HNO3 .- 
 
 
 0.328 
 
 ■ 
 
 
 
 
 
 
 
 
 HzO -_.- 
 
 
 
 
 
 
 
 
 0.84 
 
 
 
 
 
 
 
 
 
 
 
 
 Total 
 
 100.04 
 
 99.78 
 
 
 
 99.79 
 
 100.26 
 
 100.00 
 
 99.42 
 
 100.00 
 
 101.11 
 
 99.877 
 
 POSTASH SOUEOES— Continued. 
 
 Analysis Number 
 
 3157 
 
 3158 
 
 3159 
 
 
 
 Per cent, potassium ion extractable "with water-- 
 
 29.2 
 17.6 
 
 20 
 4.4 
 
 Trace 
 
 Per cent nitrate ion extractable with water 
 
 2.6 
 
 
 
 31150. POTASH IN BEINES PHOM TEEBY CO. 'SALT LAKE." 
 
 Average of 
 
 Soluble Solide Expressed 
 
 in per cents of weight of 
 
 water sample 
 
 Per cent of KsO of 
 fused salts 
 
 20 Samples Brine 
 
 3 Samples of Mud 
 
 6 Samples from Springs and Seeps.— 
 
 21.94 
 
 19.66 
 
 5.83 
 
 6.24 
 
 8.30 
 
 17.31 
 
 ANALYSIS OP COMPOSITE OP SAMPLES PEOM VARIOUS PAKTS OP LAKE 
 
 Per cents of Wt. 
 of water sample 
 
 EelatiTC No. of 
 
 Combining Units 
 
 (Gram-Equiv. per 
 
 1000 liters) . (Sp. 
 
 Gr. LIS) . 
 
 Total dissolved solids- 
 
 Volatile matter 
 
 Silica, etc. 
 
 Iron and Alumina 
 
 Calcium ion — — 
 
 Magnes'um Ion 
 
 Potassium ion 
 
 Sodium ion 
 
 Sulphate ion 
 
 Chloride ion 
 
 Carbonate ion 
 
 23.428 
 0.609 
 0.017 
 .029 
 ■ .063 
 1.103 
 1.6 
 5.363 
 3.42 
 10.41 
 0.08 
 
 37.1 
 
 1088.0 
 
 455. 
 
 2730. 
 
 841. 
 
 3460. 
 
 7.9