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Preliminary Report on Diamond-Drill Exploration and Plans for Additional Drilling in Long Park and Vicinity, Montrose County, Colorado

Description: From abstract and summary: Long Park and vicinity is in T. 47 N., R. 17 W., Montrose County, Colo. The U. S. Geological Survey started a program of drilling in the area in April 1949, to find deposits that might be developed into new mines and to appraise the reserves of the area. This drilling was done during two periods of time under separate contracts.
Date: June 1951
Creator: Stephens, H. G. & Newman, William L.
Partner: UNT Libraries Government Documents Department

Carnotite Resources of San Miguel Bench, Montrose County, Colorado

Description: Abstract: San Miguel bench includes about 4 square miles in the southern part of T. 48 N., R. 17 W., New Mexico principal meridian, Montrose County, Colorado. Production of carnotite ore from the area has been about 15, 000 short tons having an estimated average graderof 0. 31 percent U3O8,and 1. 6 percent V2 05 Nearly all of the carnotite deposits occur in a single-continuous sandstone bed near the top of the Salt Wash member of the Jurassic Morrison formation. These deposits consist chiefly of sandstone impregnated with uranium- and vanadium-bearing minerals. They are irregular tabular-shaped masses ranging in size from a few short tons to 30, 000 short tons or more of minable carnotite ore. During the period November 27, 1951, to April 17, 1953, the U. S. Geological Survey drilled 309 holes totaling 92, 194 feet on the San Miguel bench. Reserves total about 43, 000 short tons of material 1 foot or more thick and contain 0,.10 percent or more U30 or 1. 0 percent or more V205. Of these reserves 3, 300 short tons occur in private land. These reserves are in ten deposits found by Geological Survey drilling. Potential reserves (reserves based on geologic evidence only) are predicted to total about 15, 000 short tons, averaging 0.30 percent U308 and 1.6 percent V2 05 No additional exploration drilling in the San Miguel bench is planned by the Geological Survey. Some drilling by private enterprise is recommended.
Date: September 1955
Creator: Alvord, Donald C.
Partner: UNT Libraries Government Documents Department

Large-Scale Geologic Guides to Carnotite Deposits in the Uravan and Gateway Districts, Montrose and Mesa Counties, Colorado

Description: Abstract: Results of detailed mapping of the Salt Wash sandstone member of the Morrison formation in the Uravan and Gateway districts, Montrose and Mesa Counties, Colo., suggest that large areas containing both lenticular bedding in the ore-bearing sandstone and persistently altered mudstone beneath the sandstone are generally favorable for carnotite deposits.
Date: September 1951
Creator: McKay, E. J.
Partner: UNT Libraries Government Documents Department

Interim Report of Diamond-Drill Exploration, Club Mesa, Montrose County, Colorado

Description: From introduction: The present report summarizes the indicated and inferred reserves which have been found to date by the drilling in Club Mesa, Montrose County of New Mexico, and includes an estimate of the potential reserves predicted for the area. It also includes a statement of plans for additional drilling. A final report will be prepared on the completion of the drilling planned for 1951.
Date: May 1951
Creator: Bryner, Leonid & Withington, Charles F.
Partner: UNT Libraries Government Documents Department

Preliminary Analysis of Ore Distribution in the Gateway and Uravan Districts, Mesa and Montrose Counties, Colorado

Description: From abstract: The distribution of the known uranium deposits of the Colorado Plateau is being analyzed in order 1) to test for systematic relationships between that pattern and geologic factors, 2) to help guide exploration, and 3) to appraise the potential resources of the region and of each of its component areas.
Date: April 1954
Creator: Strobell, J. D., Jr.; Sample, R. D.; Stephens, H. G. & Gilbert, Cynthia C.
Partner: UNT Libraries Government Documents Department

Geophysical Investigations on the Gramlich Group, Paradox District, Montrose County, Colorado

Description: From abstract: The U. S. Geological Survey made a geophysical investigation on the Gramlich group, Paradox district, Montrose County, Colo., during the period May 26 to July 11, 1952.. Electrical resistivity and self-potential surveys were made to determine the thickness of the upper Salt Wash sandstone and to test electrical prospecting methods in an area of shallow overburden. The investigations were made in conjunction with a diamond-drilling program.
Date: March 1953
Creator: Black, R. A.
Partner: UNT Libraries Government Documents Department

Results of U.S. Geological Survey Exploration for Uranium-Vanadium Deposits in the Club Mesa Area, Uravan District, Montrose County, Colorado

Description: From introduction: This report summarizes some of the results of U. S. Geological Survey investigations in the Club Mesa area and presents a compilation of available geologic data that would be helpful in future exploration. Detailed geologic logs of U. S. Geological Survey holes drilled in the Club Mesa area on public land that is no longer withdrawn from mineral entry are on open file for public inspection in the U. S. Geological Survey office, Grand Junction, Colorado.
Date: May 1957
Creator: Boardman, Robert L.; Litsey, Linus R. & Bowers, Howard E.
Partner: UNT Libraries Government Documents Department

Detailed Mineral and Chemical Relations in Two Uranium-Vanadium Ores

Description: From introduction: This report details mineral and chemical relations in two uranium-vanadium ores of the Colorado Plateau.
Date: August 1956
Creator: Garrels, Robert M.; Larsen, E. S., III; Pommer, Alfred M. & Coleman, Robert Griffin
Partner: UNT Libraries Government Documents Department

Geology and Mineralogy of the J.J. Mine, Jo Dandy Area, Montrose County, Colorado

Description: Introduction: Detailed geologic mine mapping and sampling of the J.J. mine in the Jo dandy area, Montrose County, Colo., were undertaken to study a vanadium-uranium ore body in terms of the physical relationships of ore to host rock, the paragenetic sequence of ore minerals, and the sequential development of an oxidized suite of ore minerals from unoxidized ore.
Date: September 1955
Creator: Elston, Donald Parker & Botinelly, Theodore
Partner: UNT Libraries Government Documents Department

Criteria for Outlining Areas Favorable for Uranium Deposits in Parts of Colorado and Utah

Description: Abstract: Most of the uranium deposits in the Uravan and Gateway mining districts are in the persistent upper sandstone stratum of the Salt Wash member of the Morrison formation. Areas in which this stratum is predominantly lenticular have been differentiated from areas in which the stratum is predominantly nonlenticular. The most favorable ground for uranium deposits is in areas of lenticular sandstone where the stratum is underlain by continuous altered greenish-gray mudstone. Ore is localized in scour-and-fill sandstone beds within favorable areas of lenticular sandstone. Regional control of the movement of ore-bearing solutions in the principal ore-bearing sandstone zone is indicated by belts of discontinuously altered mudstone transitional in a northerly and southerly direction from an area of unaltered mudstone to areas of continuously altered mudstone ; and an area of unaltered mudstone in which no ore deposits are found and an increase in size, number, and grade of ore deposits from areas of discontinuously altered to continuously altered mudstone. Discrete regional patterns of ore deposits and altered mudstone are associated with Tertiary structures; where these structures and favorable host rocks occur in juxtaposition, regional controls appear to have localized ore deposits.
Date: 1955
Creator: McKay, E. J.
Partner: UNT Libraries Government Documents Department

Exploration for Uranium-Vanadium Deposits in Long Park and Adjacent Areas in the Southern Part of the Uravan District, Montrose County, Colorado

Description: A report pertaining to an exploration by the U.S. Geologic Survey in the southern part of the Uravan district for uranium-vanadium deposits. The explored area is in Montrose County, Colorado. The rocks exposed in the area are gently dripping marine and terrestial formations ranging in age from late Paleozoic to late Mesozoic.
Date: October 1956
Creator: Boardman, R. L.; Bowers, H. E.; Litsey, L. R. & Sumsion, C. T.
Partner: UNT Libraries Government Documents Department

Zoning of the Bitter Creek Vanadium-Uranium Deposit: Montrose County, Colorado

Description: Report discussing the zoning of Bitter Creek mine vanadium and uranium deposits. Information regarding field work/acknowledgments, general geology, features of the mine, zoning of the mine, zoning of other parts of the area, origin of the zones, and conclusions are included.
Date: June 1954
Creator: Heyl, Allen V.
Partner: UNT Libraries Government Documents Department

Detailed Mineral and Chemical Relations in Two Uranium-Vanadium Ores

Description: The following report analyzes channel samples from two mines (Mineral Joe No. 1 and Virgin No. 3) on the Colorado Plateau that have been studied in detail both mineralogically and chemically.
Date: August 1956
Creator: Garrels, R. M.; Larsen, E. S., (3d.); Pommer, A. M. & Coleman, R. G.
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

Montroseite and Paramontroseite

Description: Report discussing a study revolving around montroseite and paramontroseite. This report is divided into several sections: source of the data, determination of the crystal structure of paramontroseite, refinement of the montroseite and paramontroseite structures by the method of least squares, structural features of the two, solid state alteration of montroseite, and other examples of solid state alteration phenomena.
Date: June 1954
Creator: Evans, Howard T., Jr. & Mrose, Mary E.
Partner: UNT Libraries Government Documents Department

Geology of Carnotite-Bearing Sandstone in the Uravan and Gateway Districts, Montrose and Mesa Counties, Colorado, and Grand County, Utah

Description: From Introduction: "In the Uravan and Gateway districts, the general character of the bedding in the ore-bearing sandstone and amount of alteration in associated mudstones, and the relation of these to each other, are the features most useful as large-scale guides. This report describes these features and their distribution, as well as some other significant geologic characteristics of the ore-bearing sandstone."
Date: January 1953
Creator: McKay, E. J.
Partner: UNT Libraries Government Documents Department