Contributions to the Geology of Uranium and Thorium: By the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955, Issue 300
Lincoln Ridler Page, Harriet B. Smith
U.S. Government Printing Office, 1956 - Uranium ores - 739 pages
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abundant acid anticline apatite associated Atomic Energy Comm autunite average Basin batholith beds black shale calcite Canyon carbonaceous carbonate carnotite channel Chattanooga shale chemical Chinle coal Colorado Plateau concentration conglomerate contain County Cretaceous Dakota diatremes distribution of uranium district drilling faults fluorite fractures geochemical gneiss granite ground water holes host rock hydrothermal igneous rocks issued by U. S. Jurassic leached lenses lignite limestone lithologic locally material miles mines Moenkopi monazite Morrison formation mudstone occur oxides percent uranium permeability phosphate pitchblende Precambrian pyrite quartz radioactive range REFERENCES CITED region rhyolite Salt Wash samples San Juan sand sandstone sedimentary rocks sediments Shinarump siltstone solutions structures sulfides surface Temple Mountain Tertiary thorium tion Todilto tyuyamunite U. S. Atomic Energy U. S. Geol U. S. Geological Survey United uraniferous uraninite uranium uranium content uranium deposits uranium minerals uranium-bearing uranophane Utah Valley vanadium veins volcanic Wyoming zone
Page 523 - Anderson, CC, and Hinson, HH, 1951, Helium-bearing natural gases of the United States. Analyses and analytical methods: US Bur. Mines Bull. 486, 141 p.
Page 217 - Specimens selected for permeability measurements were free of all joints or fractures that could be detected with the naked eye or with the aid of a hand lens. Sediments with differing permeability were studied in thin section to determine the effects of- diagenesis on the porosity of the rocks. The permeability characteristics of drill cores from the upper part of the Salt Wash member are shown on Fig.
Page 44 - ... age of the enclosing rocks. The mean age of samples from ores in the Jurassic Morrison and Entrada formations and the Triassic Shinarump conglomerate are 72, 50, and 73 million years, respectively. These ages are much younger and more uniform than would be expected if the ores were formed at the time of deposition of the host rocks, but they compare favorably to the 60.5 million years determined as the mean age of four pitchblende samples from hydrothermal veins in the Colorado Front Range. Stieff,...
Page 15 - ... logging instruments, used in connection with electric logging, it is possible to determine the position, thickness and approximate grade of mineralization, and to differentiate the various rock types encountered in a bore hole. Instruments have been developed for logging bore holes as small as two inches in diameter. Although these instruments now are considered indispensable in uranium exploration, the basic work still is detailed field geology and laboratory research. One of the major contributions...
Page 50 - that a direct competition exists between calcium and uranium for the combining sites on the bone phase . . . between carbonate ion (which forms a relatively undissociated complex with uranyl ion) and the surface phosphate groups for uranium. The reduced uranium adsorption observed at elevated pH is somewhat more complicated but, in part, may be viewed as a competition between surface phosphate groups and hydroxyl ions.
Page 14 - Highly sensitive scintillation counters weighing as little as 5 pounds are available for ground surveys. Instruments weighing from 50 to 100 pounds are used for airborne surveys. A number of valuable uranium deposits have been found by lowlevel aerial surveys. High-level flying in broad reconnaissance surveys has been directed toward locating favorable areas for more detailed investigations. With sensitive scintillation logging instruments, used in connection with electric logging, it is possible...
Page 448 - HC, and others, 1951, the Kansas rock column: Kan. State Geol. Survey Bull. 89, 132 p. Swanson, RW, McKelvey, VE, and Sheldon, RP, 1953, Progress report on investigations of western phosphate deposits: US Geol. Survey Circ. 297. Szalay, S., 1954, The enrichment of uranium in some brown coals in Hungary: Acta Geologica [Hungaricae], Magyar tudom. Akad. II, p. 299-310. Thompson, ME, 1953, Distribution of uranium in rich phosphate beds in the Phosphoria formation: US Geol. Survey Bull. 988-D, p. 45-67....
Page 13 - Information on uranium deposits and the nature of their occurrence has been greatly increased. Special instruments and techniques have been developed for use in exploring for radioactive minerals. New metallurgical processes for extracting uranium from ores have increased recoveries and reduced the cost of production. Byproduct uranium is being recovered commercially from very low-grade materials. In 1948 the uranium supply of the Western Nations was almost entirely the product of two mines, one...
Page 15 - This general review of production and resources indicates that uranium no longer can be considered a rare metal. There are extensive deposits throughout the world, and there are processes for extracting the uranium economically. Uranium production already developed is sufficient for a major nuclear power program of world-wide extent. Additional production can be obtained when needed. When the vast low-grade resources are required, more efficient use of nuclear fuel through improved conversion or...
Page 117 - Uranium is closely associated with chalcedony in both types of veins. This association suggests that all of the uranium in the area is of the same age. If so, some of the silver-lead veins must have been reopened during the period of chalcedony vein formation.