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USGS · 70010842

Isotopic fractionation of uranium in sandstone

J.N. Rosholt·W. R. Shields·E. L. Garner
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Abstract

Relatively unoxidized black uranium ores from sandstone deposits in the western United States show deviations in the uranium-235 to uranium-234 ratio throughout a range from 40 percent excess uranium-234 to 40 percent deficient uranium-234 with respect to a reference uranium-235 to uranium-234 ratio. The deficient uranium-234 is leached preferentially to uranium-238 and the excess uranium-234 is believed to result from deposition of uranium-234 enriched in solutions from leached deposits.

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J.N. Rosholt, W. R. Shields, E. L. Garner. 1963. Isotopic fractionation of uranium in sandstone. https://doi.org/10.1126/science.139.3551.224

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