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Uranophane at Silver Cliff mine, Lusk, Wyoming
Verl R. Wilmarth, Douglas H. Johnson
1954, Bulletin 1009-A
The uranium deposit at the Silver Cliff mine near Lusk, Wyo., consists primarily of uranophane which occurs as fracture fillings and small replacement pockets in faulted and fractured calcareous sandstone of Cambrian (?) age. The country rock in the vicinity of the mine is schist of pre-Cambrian age intruded by...
Identification and occurrence of uranium and vanadium minerals from the Colorado Plateaus
A. D. Weeks, M.E. Thompson
1954, Bulletin 1009-B
This report, designed to make available to field geologists and others informa- tion obtained in recent investigations by the Geological Survey on identification and occurrence of uranium minerals of the Colorado Plateaus, contains descriptions of the physical properties, X-ray data, and in some instances results of chemical and spectrographic analysis...