Contributions to Geochemistry 1942-45 U.S Geological Survey Testing and Analysis

Description: Contributions to Geochemistry 1942-45 U.S. Geological Survey Testing and Analysis This is an original 161 page, 6" x 9 1/4", hardcover publication of U.S. Department of the Interior Bulletin 950 titled Contributions to Geochemistry 1942-45. The book was published by the United States Government Printing Office in 1946. This particular copy originally belonged to the U.S.G.S. office in Louisville, Ky. (There is a faded ink stamp on the otherwise blank front end page indicating the book was received by that office on November, 26, 1946). Excerpts from the Foreword written by Roger C. Wells are - "With the advent of the second World War every effort was directed by the Geological Survey to the search for strategic and critical minerals. Many useful chemical elements are contained as minor constituents in other ores that may be rare or abundant. As the search for these elements became more intensive the required tests and chemical analyses of the ores became more complicated and difficult; hence, in addition to making many analyses of ores by recognized methods it has been necessary for the Survey chemists to develop new methods for the solution of many problems presented to them. Increased use has been made of colorimetric, spectrographic, and X-ray methods. It was suggested that the contributions by members of the Laboratory, resulting from this work, from 1942 to 1945, be published as the first bulletin in a new series. This series will contain miscellaneous contributions to chemistry, physics, mineralogy, and related subjects, under the general term "Contributions to Geochemisty" followed by the year or years covered by the investigations. The present bulletin contains a series of papers on some of the methods developed and the results obtained during these investigations. This bulletin also contains short notes on useful apparatus, as well as papers relating to the end-member formulas of micas, the gelatinization of silicate minerals, the gamma-ray activity of potassium salts, and a theoretical discussion of the arrangement of atoms in aluminosilicates". Contents in the form of article titles and subtitles are: Analyses of Petroleum-Coke Ashes Studies on the Peroxide Method for Determining Vanadium in Minerals and Ores - Introduction ; Effect of Acid and Hydrogen Peroxide Concentration ; Color Formation and Beer's Law ; Effect and Other Constituents. The Separation of Small Amounts of Chromium from Vanadium with Ethyl Acetate - Introduction ; Solution of the Sample ; Separation and Determination of Chromium and Vanadium ; Determination of Known Mixtures ; Comparison of Methods of Determination ; Interference. A Field Test for Vanadium - Reagents and Apparatus ; Procedure ; Interferences ; Decomposition of Minerals by the Flux ; Results in the Laboratory ; Results in the Field ; Tests on Other rock Types ; Conclusions. The Significance of Internal Structure in Gelatinizing Silicate minerals - Introduction ; Structure of Gelatinizing Minerals - Orthosilicate and Pyrosilicate Types - Structures with Three-Dimensional Linkage ; Summary. Symmetrical Arrangement of Atoms in Aluminosilicates and Random Arrangement of Two Kinds of Objects in a Regular Array - Introduction / Mechanism of Gelatinization / Theoretical Evidence for Symmetrical Atomic Arrangement - Random-Cluster Formation - Calculation of Distribution Cluster-Distribution Equations for Random Arrangement - Simplified Illustrations of Random and Symmetrical Arrangements ; Symmetrical Patterns - Unit Cells - Effect of Composition on Symmetry of Arrangement ; Symmetrical Forces in Crystals / Experimental Evidence for Symmetrical Atomic Arrangement - Order-Disorder Phenomena in Metal Alloys ; Partial Randomness in Silicates / Variant Atom Equipoints / Defect Structures / Simplified Illustrations of Partly Random Distributions - Case 1. Mixtures with Simple Composition Fractions ; Case 2. Mixtures with Intermediate Composition Fractions / Summary / Appendix - Fraction of Small Clusters in Partly Random Arrangements. A Study of Methods for the Determination of Vanadium - Samples ; Methods Experimental ; Reductive Titration Method ; Extraction Method of Separating Vanadium from Chromium ; Conclusions. Determination of Beryllium in Ores - Introduction ; Mineralogical Content of Beryllium Ores ; Procedure in Determination of Beryllium ; Analytical Studies - Preparation of Beryllium Standard - Precipitation of Beryllium as Hydroxide and as Phosphate - Separation of Beryllium and Aluminum - Comparison of Results for BeO with Different Methods of Removing Iron - Results of Tests on Rock-Beryl Mixtures - Spectrographic Examination of Separated Beryllia. A System for Calculation Analyses of Micas and Related Minerals to End Members - Introduction ; Ionic Groups in the Structure of Micas ; Dioctahedra and Trioctahedral Formulas ; Structural Significance of End-Member Perecentages ; Formulation of End-Member Micas - End-Member Requirements - Equivalents in the Ionic Groups -Formulation of End Members of Minerals Related Structurally to Micas - Practical Considerations ; Calculation of Some Analyses of Micas to End Members - Method of Calculation - Alurgite - Lepidolite - Margarite - Xanthophyllite - Seybertite - Biotite. The Composition of Roscoelite - Introduction ; Previous Formulas of Roscoelite ; Analyses of Roscoelite ; Calculation of End Members ; Conclusions. A Field Test for the Detection and Estimation of Tungsten - Materials ; Procedure ; Preparation of Artificial Standards ; Experimental. An Easily Cleaned Measure for Powders Used in Spectrography The Gravimetric Determination of Tungsten with Brucine - Introduction ; Reagents ; Experimental Tests ; Procedure ; Comparative Results with Tungsten Ores. A Volumetric Method for the Determination of Carbon Dioxide - Apparatus ; Reagents ; Procedure Gamma-Ray Studies of Potassium Salts and Associated Geologic Formations - Introduction ; Description of Counting-Rate Meter ; Technique of Measurement ; Use of Statistical Theory ; Gamma-Ray Activity of Formations in the Carlsbad, N. Mex. Area. Experimental Determination of the Slope of the Linear Relation of the Gamma Emanation from Potassium - Test of Measurements. Condition - The book includes tables, diagrams and a few illustrations including three photographic picture illustrations. The book is clean and complete. The burgundy colored cover cloth with gold spine edge print is unfaded. Cover cloth wear consists of very mildly bumped corners. There are three ink stamp markings in the book. One is the aforementioned stamp on the front end page indicating the book was initially the property of the United States Geological Survey office in Louisville, Ky. The other two related ink stamps state that the book was at that time public property, was not to be removed from official files nor privately owned. One of those ink stamps is on the inside of the front cover and the other is on the title page. There are no other markings in the book. There are no torn, missing, loose, creased nor marked pages of the text. The book is in very good+ condition. The book will be shipped in a hardboard package and generally via media mail except first class mail during period of slow holiday mail. Multiple purchases of books purchased the same day may be eligible for combined shipping. Place these multiple purchases in a cart then request and wait for a combined item total prior to paying.

Price: 9.99 USD

Location: Lakewood, Ohio

End Time: 2024-11-28T15:40:30.000Z

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