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Paragenesis of the Temple Mountain Uraniferous Asphaltites, Emery County, Utah

Donald M. Hausen

出版	United States Atomic Energy Commission, Grand Junction Operations Office, Production Evaluation Division, 1959
URL	http://books.google.com.hk/books?id=cl_R8L2IWI0C&hl=&source=gbs_api

註釋

Paragenetic study favors a post-ore, partly petroliferous origin for the uraniferous asphaltites in the Moss Back member of the Triassic Chinle formation at the Temple Mountain, Emery County, Utah. The prior U308 mineralization occurs as (1) replacements within lignitic and silicified wood, (2) concretionary nodules around centers of lignite, and (3) impregnations in sandstone rich in nondescript plant debris. Most of the primary minerals are closely related in time of formation. Early uraninite, montroseite, sphalerite, and galena were closely followed and partially replaced by later native arsenic, tennantite, chalcopyrite, pyrite and marcasite. Detrital quartz was partly replaced by the metallic minerals which were later partly replaced by bitumens. Both liquid and solid bitumens originated as petroleum fractions genetically unrelated to local organic remains.