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Thorium and rare earth minerals in the Powderhorn district, Gunnison County, Colorado

Description: "Thorium deposits were discovered in the Powderhorn district in 1949. This district has long been known for its occurrences of alkalic igneous rocks, of which the best known is the Iron Hill complex (Larsen, 1942). Some of these alkalic rocks contain titanium, barium, strontium, rare earths, thorium, and niobium in greater percentages than those of most igneous rocks. A study of the thorium deposits was undertaken to obtain more information on the geologic relation of minor elements, particular… more
Date: February 1954
Creator: Olson, J. C. & Wallace, S. R.
Item Type: Refine your search to only Report
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The Uravan Mineral Belt

Description: "This report briefly describes the [Urvanian Mineral Belt] and outlines the geologic evidence supporting its concept. General plans for continuous exploration of this belt, and preliminary prediction of the total amount of carnotite-bearing rocks that might be in one unexplored area, are also presented"
Date: February 1950
Creator: Fischer, R. P.
Item Type: Refine your search to only Report
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Exploration for uranium-vanadium deposits in Long Park and adjacent areas in the southern part of the Uravan district, Montrose County, Colorado

Description: "Between April 21, 1949, and August 20, 1955, the U.S. Geological Survey explored the southern part of the Uravan district for uranium-vanadium deposits and to appraise the uranium-vanadium reserves in the area."
Date: October 1956
Creator: Boardman, R. L.; Bowers, H. E.; Litsey, L. R. & Sumsion, C. T.
Item Type: Refine your search to only Report
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The Robinson and Weatherly uraniferous pyrobitumen deposits near Placerville, San Miguel County, Colorado

Description: A report regarding the Robinson and Wetherly Uraniferious Pyrobitumen Deposits Near Placerville, San Miguel County, Colorado. This report concerns work done on behalf of the division of Raw Materials of the U.S. Atomic Energy Commission for the purpose of determining the uranium reserves, mode of occurrence, and extent of these deposits.
Date: November 1952
Creator: Wilmarth, V. R. & Vickers, Rollin C.
Item Type: Refine your search to only Report
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Uranium in the Metal-Mining Districts of Colorado

Description: "This paper summarizes the results of the field studies of the Survey's Reconnaissance Group and outlines some geologic criteria that may be useful in guiding the search for uranium ore. The writers wish to acknowledge the cooperation of the minding companies and individuals who materially aided the program of investigations by reporting radioactive localities and by submitting samples of radioactive rocks and ores."
Date: June 1952
Creator: King, Robert Ugstad; Leonard, B. F.; Moore, Frank B. & Pierson, Charles Thomas
Item Type: Refine your search to only Report
open access

Reconnaissance for radioactivity in the metal-mining districts of the San Juan Mountains, Colorado

Description: "A reconnaissance for radioactive minerals in the San Juan Mountains, Colo. (fig. 1), was started in the western part by W.S. Burbank and C.T. Pierson in 1951, and continued in 1952 by Pierson, W.F. Weeks, and F.J. Kleinhampl, and in 1953 by Pierson and T.H.W. Loomis of the U.S. Atomic Energy Commission in the western part of the mountains in reconnaissance and in examination of a pitchblende occurrence found by Loomis. The work on which this paper is based was done by the Geological Survey on … more
Date: April 1956
Creator: Pierson, Charles Thomas; Weeks, W. F. & Kleinhampl, F. J.
Item Type: Refine your search to only Report
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