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Determination of Thorium in the Parts Per Million Range in Rocks

Description: Abstract: "A procedure for the determination of thorium in the concentration range of 0.2 to 10 parts per million ThO2 in felsic or mafic rocks. Thorium is extracted by mesityl oxide and purified by iodate precipitation from nitric acid medium containing tartaric acid and hydrogen peroxide. The thorium is determined spectrophotometrically with thoron from meso-tartaric acid medium."
Date: July 1957
Creator: Levine, Harry & Grimaldi, Frank S.
Partner: UNT Libraries Government Documents Department

The Occurrence of Germanium

Description: The following report discusses the possible sources of the uncommon element, germanium. It is the first in a series of reports to be prepared by the Geological Survey discussing rare and uncommon elements.
Date: February 1945
Creator: Fleischer, Michael & Harder, J. C.
Partner: UNT Libraries Government Documents Department

Geochemistry of Beryllium

Description: From abstract: This is a review, with annotated bibliography, of the mode of occurrence of the element beryllium. It is not a list of specific ore deposits, but a summary of the types of the types of minerals and rocks in which beryllium has been reported to occur. In addition, the unpublished spectrographic studies of the Geological Survey on mill products are summarized, and data are given on domestic production and reserves and on foreign production.
Date: June 1946
Creator: Fleischer, Michael & Cameron, E. N.
Partner: UNT Libraries Government Documents Department

Wide-Spaced Uranium Geochemical Survey in the Plainview, Lubbock, and Big Spring Quadrangles, Texas

Description: From abstract: Results of a reconnaissance geochemical survey at a nominal sample spacing of 16 km (10 mi) are reported for the Plainview, Lubbock, and Big Spring Quadrangles in northwest Texas. Stream sediment, stream water, and groundwater were analyzed for approximately 25 parameters.
Date: December 30, 1977
Creator: Nichols, C. E.; Butz, T. R.; Cagle, G. W. & Kane, V. E.
Partner: UNT Libraries Government Documents Department

Volumetric Determination of Uranium Using Titanous Sulfate as Reductant Before Oxidimetric Titration

Description: The following report discusses a method for determining uranium in samples containing 0.05 percent or more U3O8, using titanous sulfate as reducing agent, that's much shorter, faster, and has fewer interferences than conventional methods using reductor columns.
Date: June 1956
Creator: Wahlberg, James S.; Skinner, Dwight L. & Rader, Lewis F., Jr.
Partner: UNT Libraries Government Documents Department

Limnological and Geochemical Survey of Williams Lake Hubbard County, Minnesota

Description: Purpose and scope: The purpose of this report is to describe and make preliminary interpretations of: (1) Limnological characteristics of Williams Lake, based on physical, chemical, and biological data collected in 6 days in 6 different months in 1979; (2) chemical quality of ground water near the lake, based on samples collected during the summer of 1979; and (3) mineralogy of the lake sediment cores obtained in February 1978. The period of study extended from March, when the lake was covered by ice, through the period of open water, to December, when it was again covered by ice.
Date: September 1981
Creator: LaBaugh, J. W.; Groschen, G. E. & Winter, T. C.
Partner: UNT Libraries Government Documents Department

Final Report: Molecular Basis for Microbial Adhesion and Geochemical Surface Reactions: A Study Across Scales

Description: Computational chemistry was used to help provide a molecular level description of the interactions of Gram-negative microbial membranes with subsurface materials. The goal is to develop a better understanding of the molecular processes involved in microbial metal binding, microbial attachment to mineral surfaces, and, eventually, oxidation/reduction reactions (electron transfer) that can occur at these surfaces and are mediated by the bacterial exterior surface. The project focused on the interaction of the outer microbial membrane, which is dominated by an exterior lipopolysaccharide (LPS) portion, of Pseudomonas aeruginosa with the mineral goethite and with solvated ions in the environment. This was originally a collaborative project with T.P. Straatsma and B. Lowery of the Pacific Northwest National Laboratory. The University of Alabama effort used electronic structure calculations to predict the molecular behavior of ions in solution and the behavior of the sugars which form a critical part of the LPS. The interactions of the sugars with metal ions are expected to dominate much of the microscopic structure and transport phenomena in the LPS. This work, in combination with the molecular dynamics simulations of Straatsma and the experimental electrochemistry and microscopy measurements of Lowry, both at PNNL, is providing new insights into the detailed molecular behavior of these membranes in geochemical environments. The effort at The University of Alabama has three components: solvation energies and structures of ions in solution, prediction of the acidity of the critical groups in the sugars in the LPS, and binding of metal ions to the sugar anions. An important aspect of the structure of the LPS membrane as well as ion transport in the LPS is the ability of the sugar side groups such as the carboxylic acids and the phosphates to bind positively charged ions. We are studying the acidity of the acidic side groups in order ...
Date: June 27, 2013
Creator: Dixon, David Adams
Partner: UNT Libraries Government Documents Department

Portland 1° x 2° NTMS Area, Maine and New Hampshire: Data Release

Description: From abstract: This data release presents preliminary results of ground water, stream sediment, and stream water reconnaissance in the National Topographic Map Series (NTMS) Portland 10 x 20 quadrangle. Stream sediment and stream water samples were collected from small streams at 1094 sites for a nominal density of one site per 13 square kilometers (five square miles) in rural areas. Ground water samples were collected at 560 sites for a nominal density of one site per 26 square kilometers (ten square miles). Neutron activation analysis (NAA) results are given for uranium and 16 other elements in sediments, and for uranium and 9 other elements in ground water and surface water. Field measurements and observations are reported for each site. Analytical data and field measurements are presented in tables and maps. Statistical summaries of data and a brief description of results are given. A generalized geologic map and a summary of the geology of the area are included.
Date: February 1979
Creator: Koller, G. R.
Partner: UNT Libraries Government Documents Department

Portland 1° x 2° NTMS Area, Maine and New Hampshire: Data Release, Plate 1-9

Description: Supplementary data containing a geologic-tectonic map of the Portland Quadrangle, in addition to mineral occurrences, sample site locations, and elemental distribution data to accompany a report on hydrogeochemical and stream sediment reconnaissance in Maine and New Hampshire.
Date: February 1979
Creator: Koller, G. R.
Partner: UNT Libraries Government Documents Department

Semiquantitative Spectrographic Analysis and Rank Correlation in Geochemistry

Description: Abstract: "The rank coefficient, rs, which involves less computation than the product moment correlation coefficient, r, can be used to indicate the degree of relationship between two elements. The method is applicable in situations where the assumptions underlying normal distribution correlation theory may not be satisfied. Semiquantitative spectrographic analyses can be used to calculate rank correlations between elements because the results are already partly ranked in an analytical report."
Date: October 1956
Creator: Flanagan, F. J.
Partner: UNT Libraries Government Documents Department

Development of an Experimental Data Base and Theories for Prediction of Thermodynamic Properties of Aqueous Electrolytes and Nonelectrolytes of Geochemical Significance at Supercritical Temperatures and Pressures.

Description: The objective of this research was to combine new experimental measurements on heat capacities, volumes, and association constants of key compounds with theoretical equations of state and with first principles quantum mechanical calculations to generate predictions of thermodynamic data. The resulting thermodynamic data allow quantitative models of geochemical processes at high temperatures and pressures. Research funded by a DOE grant to Prof. Robert Wood at the University of Delaware involved the development of new theoretical equations of state for aqueous solutions of electrolytes and non-electrolytes, methods to estimate thermodynamic data not available from experiments, collection of data on model compounds through experiments and predictions of properties using ab initio quantum mechanics. During the last three and a half years, with support from our DOE grant, 16 papers have been accepted or published, and 3 more are in preparation. Results of this research have been reported in numerous invited and contributed presentations at national and international meetings. For this report, we will briefly comment on the highlights of the last 3 and a half years and give a complete list of papers published, accepted, or submitted during these years.
Date: October 11, 2005
Creator: Wood, Robert H.
Partner: UNT Libraries Government Documents Department

Summaries of FY 1995 geosciences research

Description: The summaries in this document, prepared by the investigators, describe the scope of the individual programs. The Geosciences Research Program includes research in geophysics, geochemistry, resource evaluation, solar-terrestrial interactions, and their subdivisions including earth dynamics, properties of earth materials, rock mechanics, underground imaging, rock-fluid interactions, continental scientific drilling, geochemical transport, solar/atmospheric physics, and modeling, with emphasis on the interdisciplinary areas. All such research is related either direct or indirect to the Department of Energy`s long-range technological needs.
Date: December 1, 1995
Partner: UNT Libraries Government Documents Department

Basin-centered gas systems of the U.S. project

Description: The principal objective of this project is to perform an analysis of basin-centered gas occurrence in the U.S. and analyze its potential significance to future natural gas exploration and development. This project shall utilize state-of-the-art procedures and knowledge of basin-centered gas systems, including, stratigraphic analysis, organic geochemistry, basin thermal dynamics and reservoir and pressure analyses. All information will be stored in database format, and products will be fully digital.
Date: June 30, 1998
Partner: UNT Libraries Government Documents Department

ADVANCED CHEMISTRY BASINS MODEL

Description: The advanced Chemistry Basin Model project has been operative for 48 months. During this period, about half the project tasks are on projected schedule. On average the project is somewhat behind schedule (90%). Unanticipated issues are causing model integration to take longer then scheduled, delaying final debugging and manual development. It is anticipated that a short extension will be required to fulfill all contract obligations.
Date: May 1, 2004
Creator: III, William Goddard; III, Lawrence Cathles; Blanco, Mario; Manhardt, Paul; Meulbroek, Peter & Tang, Yongchun
Partner: UNT Libraries Government Documents Department

Distribution of Elements in the Salt Wash Member of the Morrison Formation in the Jo Dandy Area, Montrose County, Colorado

Description: The following report covers a chemical study that was made of the Salt Wash member of the Morrison formation of Jurassic age in the Jo Dandy area, Montrose County, Colorado in 1954. The chemical study was made to investigate the distribution of elements in the host rocks with emphasis on the pattern of variation as related to the position of known ore bodies, and to determine average concentrations of some of the elements in the major rock types.
Date: October 1957
Creator: Newman, William L. & Elston, Donald P.
Partner: UNT Libraries Government Documents Department

Mineralogy and Geochemistry of a Uraniferous Coal From the Red Desert Area, Sweetwater County, Wyoming

Description: Report discussing the investigation of the mineralogy and geochemistry of some subbituminous uraniferous coal from the Red Desert area of Sweetwater County, Wyoming. Data and discussion from the mineralogic and geochemical studies, Fischer retort assays of a coal sample, and summary and conclusions are included.
Date: August 1953
Creator: Breger, I. A.; Deul, Maurice; Meyrowitz, Robert & Rubinstein, Samuel
Partner: UNT Libraries Government Documents Department