Role of fluid mixing and fault-related sulfide in the origin of the Ray Point uranium district, south Texas

Economic Geology
By: , and 

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Abstract

The Lamprecht and Felder deposits are roll-type deposits hosted by the Miocene Oakville Sandstone. Four distinct stages of FeS 2 mineral formation are recognized: (1) a generation of isotopically light (delta 34 S < -20 per mil) preore pyrite, (2) a generation of isotopically light (delta 34 S < -20 per mil) marcasite that formed mostly before, but also during ore deposition, (3) a postore generation of isotopically heavy pyrite (delta 34 S > 0 per mil), and (4) a yet later generation of marcasite with isotopically light sulfur close to the values of stages 1 and 2. Complex zone of mixing between saline brines migrating up the fault from depth and oxygenated meteoric water recharging at the outcrop. Bacterial activity.

Publication type Article
Publication Subtype Journal Article
Title Role of fluid mixing and fault-related sulfide in the origin of the Ray Point uranium district, south Texas
Series title Economic Geology
DOI 10.2113/gsecongeo.78.6.1043
Volume 78
Issue 6
Year Published 1983
Language English
Publisher Society of Economic Geologists
Description 21 p.
First page 1043
Last page 1063
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