Results 171 to 180 of about 379 (209)
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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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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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Journal of Geochemical Exploration, 1981
Pirc, S. and Rose, A.W., 1981. Uranium anomalies in paleo-aquifers near sandstone-type uranium deposits in the Devonian Catskill Formation of Pennsylvania. In: A.W. Rose and H. Gundlach (Editors), Geochemical Exploration 1980. J. Geochem. Explor., 15: 219–231. Background values of U and Th in 371 clastic sedimentary rocks from the Catskill Formation
Simon Pirc, Arthur W. Rose
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Pirc, S. and Rose, A.W., 1981. Uranium anomalies in paleo-aquifers near sandstone-type uranium deposits in the Devonian Catskill Formation of Pennsylvania. In: A.W. Rose and H. Gundlach (Editors), Geochemical Exploration 1980. J. Geochem. Explor., 15: 219–231. Background values of U and Th in 371 clastic sedimentary rocks from the Catskill Formation
Simon Pirc, Arthur W. Rose
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Economic Geology, 1962
U and V in sandstone-type deposits of the western United States apparently have been transported to their present environment from external sources by low-temperature aqueous solutions. In this paper an attempt is made to interpret the characteristics of aqueous solutions capable of transporting significant quantities of U and V through continental ...
P. B. Hostetler, R. M. Garrels
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U and V in sandstone-type deposits of the western United States apparently have been transported to their present environment from external sources by low-temperature aqueous solutions. In this paper an attempt is made to interpret the characteristics of aqueous solutions capable of transporting significant quantities of U and V through continental ...
P. B. Hostetler, R. M. Garrels
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2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
Many uranium geological studies demonstrate the reduction environment induced by hydrocarbon microseepage is one of the key metallogenetic factors for the sandstone-type uranium mineralization, so utilizing hyperspectral and multispectral remote sensing technology to detect hydrocarbon- induced diagenetic alterations, such as clay mineral alteration ...
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Many uranium geological studies demonstrate the reduction environment induced by hydrocarbon microseepage is one of the key metallogenetic factors for the sandstone-type uranium mineralization, so utilizing hyperspectral and multispectral remote sensing technology to detect hydrocarbon- induced diagenetic alterations, such as clay mineral alteration ...
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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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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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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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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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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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