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Comparison of the isotopic abundance of U235 and U238 and the radium activity ratios in Colorado Plateau uranium ores

Geochimica et Cosmochimica Acta

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Abstract

The isotopic abundances of uranium and the radium activity ratios of eleven samples of uranium ore from the Colorado Plateau have been measured. No significant variation in the isotopic abundance of the uranium was noted; with'in the experimental error, the average U235/U238 ratio is 137.7. There is a significant variation in the Ra226/Ra223 activity ratios (0.048-0.143), which indicates a relatively recent alteration of the ore samples. The variations do not, however, explain the lead-uranium and lead-lead age discrepancies. ?? 1957.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Comparison of the isotopic abundance of U235 and U238 and the radium activity ratios in Colorado Plateau uranium ores
Series title:
Geochimica et Cosmochimica Acta
Volume
11
Issue:
3
Year Published:
1957
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geochimica et Cosmochimica Acta
First page:
189
Last page:
193
Number of Pages:
5