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A Glossary of Uranium- and Thorium-Bearing Minerals

Description: Glossary of minerals containing uranium and thorium. "In the index there are 325 entries which represent 81 species containing uranium and thorium as major constituents, 39 species containing small amounts of uranium and thorium, 29 species which should be tested for uranium and thorium, and 13 species which have been reported to contain impurities or intergrowths of uranium, thorium, or rare-earth minerals."
Date: January 1950
Creator: Frondel, Judith Weiss & Fleischer, Michael
Item Type: Refine your search to only Report
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Reconnaissance of Some Geologic Formations in Southeastern Idaho, Western Wyoming, and Northern Utah

Description: Abstract: A radiometric reconnaissance, using a portable beta-gamma survey meter, of some geologic formations ranging in age from Cambrian to Cretaceous, and springs in southeastern Idaho, western Wyoming, and northern Utah, has shown that none of them are sufficiently radioactive to warrant further examination of them in the area.
Date: January 1950
Creator: Anderson, Frank J.
Item Type: Refine your search to only Report
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Progress of Geologic Studies, Colorado Plateau Project

Description: Report discussing progress made on geologic studies under the Colorado Plateau Project. The geologic studies that were in progress during the time of this report consist of the following: "(1) General geologic mapping in southwestern Colorado and southeastern Utah. (2) Regional stratigraphic and sedimentary studies in Colorado, New Mexico, Utah, and Arizona. (3) Studies of past and present ground-water conditions in southwestern Colorado and southeastern Utah."
Date: February 1950
Creator: Cater, F. W.; Craig, L. C. & Phoenix, D. A.
Item Type: Refine your search to only Report
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Radioactivity and Mineralogy of Concentrates From the Placers of Julian, Moore, and Candle Creeks and the Cripple Creek Mountains, Lower Yukon-Kuskokwim Highlands Region, Alaska

Description: Abstract: Radiometric and mineralogic study of 10 concentrate samples from the placers of Julian, Moore, and Candle Creeks, and the Cripple Creek Mountains, Lower Yukon-Kuskokwim Highlands region, Alaska, failed to reveal any significant amounts of uranium. Only the sample from Julian Creek shows and appreciable amount of radioactivity (0.03 percent equivalent uranium), but this is attributed entirely to thorium in monazite.
Date: February 1950
Creator: White, M. G. & Killeen, P. L.
Item Type: Refine your search to only Report
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Reconnaissance for Trace Elements in North Dakota and Eastern Montana

Description: From abstract: A reconnaissance for sources of radioactive material in North Dakota and eastern Montana was made in 1948. This reconnaissance was followed by a more detailed survey of parts of Golden Valley and Slope counties, southwestern North Dakota, in June 1949. The radioactivity of representative sections of all formations known to be exposed in the area and of three manganiferous spring deposits was determined with portable Geiger-Mueller counters. At 86 localities 82 samples were taken … more
Date: February 1950
Creator: Wyant, Donald G. & Beroni, Ernest P.
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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Black Shale Investigations, Block 3, Tennessee

Description: Report discussing a geological examination of the Chattanooga shale in the general vicinity of the Sequatchie Valley, Tennessee (Block 3) during the period from February 1948 to March 1948. This examination was part of a larger study of the distribution of uranium in the Chattanooga Shale.
Date: March 1950
Creator: Robeck, R. C. & Brown, Andrew
Item Type: Refine your search to only Report
open access

Carnotite Resources in the Charles T. Area and Vicinity, San Miguel County, Colorado

Description: Report discussing an exploratory drilling program in the Charles T. area and vicinity during the period from November 1947 and September 1949. "The purpose of the exploration was to discover new carnotite deposits to support milling operations on the Colorado Plateau, and to appraise the uranium and vanadium resources of the area explored."
Date: March 1950
Creator: Bush, Alfred L.
Item Type: Refine your search to only Report
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A Preliminary Report on Methods of Determining the Age of Colorado Plateau Carnotite

Description: From Abstract: "Four methods of dating Colorado Plateau carnotite have been examined and evaluated: mineralogic methods, radioactive-equilibrium methods, lead-uranium-ratio methods, and lead-isotope methods. The data on 12 high-grade samples, from a suite of 50 representative carnotite ores, are presented."
Date: April 1950
Creator: Stieff, L. R.; Girhard, M. N. & Stern, T. W.
Item Type: Refine your search to only Report
open access

Radiometric and Mineralogic Studies of the Granitic Complex in the Cape Nome Area Seward Peninsula, Alaska

Description: Abstract: An early report on the Cape Nome area, Seward Peninsula, Alaska, stated that granitic rocks there contain allanite as a common accessory mineral. Results of studies in 1947 indicate that very little allanite is present, and that the slight amount of radioactiity of the granitic complex is attributable to the accessory minerals zircon and sphene.
Date: May 1950
Creator: West, W. S. & Matzko, J. J.
Item Type: Refine your search to only Report
open access

Trace Elements Reconnaissance of the Southern Highway Belt, South-Central Alaska

Description: Abstract: A radiometric reconnaissance of the areas adjacent to the principal highways and secondary roads of south-central Alaska was carried out during the summer of 1947. The investigation included the examination of nine gold-placer workings, five gold lodes, a gypsum mine, and a copper prospect. Nearly all of the lithologic types outcropping in the highway belt were tested. No significant amounts of radioactive material were found.
Date: May 1950
Creator: Moxham, R. M.
Item Type: Refine your search to only Report
open access

Trace Elements Reconnaissance on the South Fork of Quartz Creek, Northeastern Seward Peninsula, Alaska

Description: Abstract: Two uranium-bearing minerals, uranothorianite and thorite (?), were found in the stream gravels of the main branch of the South Fork of Quartz Creek, a tributary of the Kiwalik River. Although the bedrock source of the minerals was not located, the radioactive material was traced in slope wash well above the stream gravel. A detailed investigation of the area with more sensitive counters might reveal the source of the minerals and localities where the minerals are sufficiently concent… more
Date: May 1950
Creator: Killeen, P. L. & White, Max Gregg
Item Type: Refine your search to only Report
open access

Trace Elements Reconnaissance on the South Fork of Quartz Creek, Northeastern Seward Peninsula, Alaska

Description: Abstract: "Two uranium-bearing minerals, uranothorianite and thorite(?), were found in the stream gravels of the main branch of the South Fork of Quartz Creek, a tributary of the Kiwalik River. Although the bedrock source of the minerals was not located, the radioactive material was traced in slope wash well above the stream gravel. A detailed investigation of the area with more sensitive counters might reveal the source of the minerals and localities where the minerals are sufficiently concent… more
Date: May 1950
Creator: Killeen, P. L. & White, M. G.
Item Type: Refine your search to only Report
open access

An Improved Fluorimeter for the Determination of Uranium in Fluoride Melts

Description: Abstract: The Model R fluorimeter has been modified to increase its stability and sensitivity. The new instrument is about ten times as sensitive as the original fluorimeter, but it can also be employed conveniently at a sensitivity level comparable to or less than that of the Model R fluorimeter.
Date: June 1950
Creator: Fletcher, Mary H. & May, Irving
Item Type: Refine your search to only Report
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