Formation of Uranium Ores by Diagenesis of Volcanic Sediments

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Date

1978

Authors

Henry, Christopher D.
Walton, Anthony W.

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Abstract

Silicic igneous rocks are relatively rich in uranium; both granites (plutonic) and rhyolites (volcanic and volcaniclastic) have been considered sources of uranium for some sandstone deposits. Uranium in sandstone deposits of the Texas Gulf Coast is probably derived from volcanic ash incorporated in the sediments (Galloway, 1977). In turn, the volcanic ash is probably derived from a belt of rhyolitic volcanoes active during the Middle Tertiary in western Mexico and Trans-Pecos Texas. It therefore seems appropriate to examine the volcanic source rocks to determine whether uranium deposits could form in them or from uranium derived from them.

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