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- W1569857067 abstract "Lignite samples from 20 cores in North and South Dakota were analyzed to determine the U content of lignite beds in the area. Semiquantitative spectrographic analyses for 35 elements were performed on stratigraphic sections of the lignite cores to (1) determine the vertical distribution of U within the beds and (2) to discover if any correlation existed between the occurrence of a particular trace element and the occurrence of U in the lignite. Uranium and Mo were both found to be more highly concentrated at the top of lignite beds than in other sections of the beds and were also found to parallel each other in occurrence and concentration. The author estimates that 9 million tons of lignite averaging 0.01 percent U are present in the areas sampled. The concentration of U is highly variable in the study area and may average as much as 0.03 percent U in some small deposits. The ash content of the lignite tested contained as much as 20 percent U. A general description of the geology of the areas samples is included in the report." @default.
- W1569857067 created "2016-06-24" @default.
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- W1569857067 date "1959-01-01" @default.
- W1569857067 modified "2023-09-27" @default.
- W1569857067 title "Core drilling for uranium-bearing lignite in Harding and Perkins Counties, South Dakota and Bowman County, North Dakota" @default.
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