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GEOREF RECORD

Widespread occurrence and character of uraninite in the Triassic and Jurassic sediments of the Colorado Plateau

Abraham Rosenzweig, John Walter Gruner and Lynn Gardiner
Widespread occurrence and character of uraninite in the Triassic and Jurassic sediments of the Colorado Plateau
Economic Geology and the Bulletin of the Society of Economic Geologists (June 1954) 49 (4): 351-361

Abstract

Numerous uranium deposits in the sedimentary rocks of the Colorado Plateau contain uraninite. Although this mineral is not restricted to any one formation, the majority of its occurrences are in the Chinle and Shinarump formations of Triassic age. There are two principal modes of occurrence of uraninite, one with sulfides of copper, the other in asphaltic bodies. In both types, the association with fossil plants is the rule. Uraninite generally replaces cell walls of the plants, and the copper sulfides are more apt to fill the cells. Under these conditions the hardness and reflectivity of the uraninite may differ considerably from that of hydrothermal vein uraninite. The paragenesis of the minerals is complex and somewhat obscure, but a formation of the uraninite contemporaneous with, or shortly followed by, copper sulfides is suggested.


ISSN: 0361-0128
EISSN: 1554-0774
Coden: ECGLAL
Serial Title: Economic Geology and the Bulletin of the Society of Economic Geologists
Serial Volume: 49
Serial Issue: 4
Title: Widespread occurrence and character of uraninite in the Triassic and Jurassic sediments of the Colorado Plateau
Pages: 351-361
Published: 195406
Text Language: English
Publisher: Economic Geology Publishing Company, Lancaster, PA, United States
Accession Number: 1959-026331
Categories: Economic geology of ore deposits
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N37°00'00" - N41°00'00", W109°00'00" - W102°00'00"
N33°40'00" - N40°30'00", W114°00'00" - W106°19'60"
Source Note: discussions by F. R. Joubin and G. C. Selfridge, p. 233-234, Mar.-Apr. 1955; reply with title, Concentration of uranium by carbon compounds, by J. W. Gruner, p. 542-543, Aug. 1955; discussion by C. F. Davidson, p. 879-880, Dec. 1955; reply by J.W. Gruner, p. 284-285, May 1956; reply by C. F. Davidson, p. 724-725, Nov. 1956.
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Society of Economic Geologists. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1959
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