Results 151 to 160 of about 10,275 (206)
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Economic Geology, 1985
The Karpinka Lake prospect is a strata-bound uranium deposit hosted by Aphebian meta-sediments located just to the south of the important unconformity-type deposits at Key Lake in northern Saskatchewan. The uranium occurs as disseminated uraninite and brannerite in sillimanite-bearing quartz-feldspar-biotite gneisses which, on the basis of major ...
Anthony E. Williams-Jones +1 more
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The Karpinka Lake prospect is a strata-bound uranium deposit hosted by Aphebian meta-sediments located just to the south of the important unconformity-type deposits at Key Lake in northern Saskatchewan. The uranium occurs as disseminated uraninite and brannerite in sillimanite-bearing quartz-feldspar-biotite gneisses which, on the basis of major ...
Anthony E. Williams-Jones +1 more
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Geochemical characteristics of the sandstone-type uranium deposits in Northern Sichuan Province
Chinese Journal of Geochemistry, 1995Described in detail in this paper are the geochemical characteristics of the sandstone-type uranium deposits in northern Sichuan Province. Favorable and unfavorable conditions for the enrichment of uranium are explored on the basis of the elemental abundances and ratios of U, Th and K determined by gamma-ray spectroscopy.
Wang Wangzhang +3 more
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Sedimentary Environmental Control of Sandstone-Type Uranium Deposits: ABSTRACT
AAPG Bulletin, 1971Uranium deposits of the Rocky Mountain area are present in fluvial sandstones that were derived from granitic highland source areas and deposited in adjacent intermontane basins. The sandstones are arkosic to arkose in composition and contain a small percentage of carbonized plant debris and pyrite, medium grained to conglomeratic in size, subrounded ...
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Diversity of Microbial Community in Shihongtan Sandstone-Type Uranium Deposits, Xinjiang, China
Geomicrobiology Journal, 2012Investigation of microbial communities in uranium deposits will be beneficial for understanding the indigenous microbial impacts on uranium-mineralization as well as developing appropriate remediation and long-term management strategies of uranium-contaminated repositories.
Zhi Chen +8 more
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Potential for sandstone-type uranium deposits in Jurassic rocks, Khorat Plateau, Thailand
Economic Geology, 1975Geological similarity between the Khorat Plateau of northeastern Thailand and the Colorado Plateau of the western United States, together with recent discovery of a uranium-copper deposit in sandstone in the Khorat Plateau, suggests that the Khorat Plateau may have substantial potential for uranium resources.
D. R. Shawe +2 more
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Concepts of genesis of sandstone-type uranium ore deposits
Economic Geology, 1963Although the sources of uranium in sandstone-type ores are in most cases obscure, the formation of the ore deposits can be attributed on the basis of sulfur isotopic data to the precipitating action of hydrogen sulfide of bacteriological origin. In some areas deposition has been related heretofore to natural gas, but the isotopic evidence does not ...
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Applied Mechanics and Materials, 2013
It is a breakthrough exploratory area about sandstone-type uranium deposit of Bayanwula area in Erlian basin, Inner Mongolia, a detailed study of the form of occurrences . Ore-bearing horizon is the down cretaceous Saihan formation in Bayanwula area. Study on uranium occurrences which is significance for Uranium mining smelting.The host rocks are gray ...
Zhao Bin Yan +3 more
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It is a breakthrough exploratory area about sandstone-type uranium deposit of Bayanwula area in Erlian basin, Inner Mongolia, a detailed study of the form of occurrences . Ore-bearing horizon is the down cretaceous Saihan formation in Bayanwula area. Study on uranium occurrences which is significance for Uranium mining smelting.The host rocks are gray ...
Zhao Bin Yan +3 more
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Natural Analogue Study of Tono Sandstone Type Uranium Deposit in Japan
1987Sandstone type uranium deposit, located in Tono area, central part of Japan, has been recognized as a potentially useful analogue of geological isolation of radioactive wastes in Japan. The uranium deposit occurs as the stratiform which is less than 150 m in depth and below the water table. The studied area is not far from inhabitant. Preliminary study
C. Sato, Y. Ochiai, S. Takeda
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Sandstone-type uranium deposits at Ambrosia Lake, New Mexico; an interim report
Economic Geology, 1961The Ambrosia Lake district in northwestern New Mexico is the most important U mining and milling district in the United States. Together with the nearby Laguna district it contains more than 50% of the nation9s reserves. Most of the ore occurs in the Morrison Formation of Late Jurassic age as elongate, tabular, mantolike bodies principally in the upper
H. C. Granger +3 more
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Economic Geology, 1966
Isotopic analyses for U 234 were made on 30 samples from 5 vertical suites of ore-grade uranium-bearing sandstone from the Ambrosia Lake district, McKinley County, New Mexico. U 238 , U 235 , and U 234 were measured by mass spectrometry, and U 234 /U 238 ratios were verified by alpha spectrometry.
J. R. Dooley +2 more
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Isotopic analyses for U 234 were made on 30 samples from 5 vertical suites of ore-grade uranium-bearing sandstone from the Ambrosia Lake district, McKinley County, New Mexico. U 238 , U 235 , and U 234 were measured by mass spectrometry, and U 234 /U 238 ratios were verified by alpha spectrometry.
J. R. Dooley +2 more
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