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Uranium in the Upper Cambrian black shale of Sweden

January 1, 1955

The Peltura zone of the Upper Cambrian black shales of Sweden contains about 0.02 percent uranium. Maximum amounts are present in rocks deposited in an embayment in the sea and in rocks in or closely adjacent to that part of the vertical sequence that contains maximum amounts of distillable oil, total organic matter, pyrite, and a black highly uraniferous kerogen called "kolm". Available data suggest that the precipitation of uranium is favored by a low redox potential and that the uranium in the shale matrix may be in fine-grained kolm.

Publication Year 1955
Title Uranium in the Upper Cambrian black shale of Sweden
DOI 10.3133/tei495
Authors Vincent Ellis McKelvey
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Trace Elements Investigations
Series Number 495
Index ID tei495
Record Source USGS Publications Warehouse