Geology and Uranium Occurrences in the Miller Hill Area Carbon County, Wyoming Page: 6
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6
GEOLOGY AND URANIUM OCCURRENCES IN THE MILLER HILL AREA
CARBON COUNTY, WYOMING
By James D. Vine and George E. Prichard
ABSTRACT
Uranium occurs in the North Park(?) formation of Pliocene(?)
age in the Miller Hill area, about 25 miles south of Rawlins, Carbon
County, Wyo. As much as 0. 5 percent uranium is contained in grab
samples, but only about 1000 tons of rock are known to contain as much
as 0. 03 percent uranium. Beds of brecciated, silicified limestone 3 to
10 feet thick contain the principal concentrations of uranium. Lesser
concentrations are found in calcareous sandstone and quartzite. Urano-
pane, Ca(UO )2SizO7. 6H20, the principal uranium -mineral, has been
deposited in vugs, as fracture and surface coatings, and as a dissemi-
nated constituent of the rock. Uranium also occurs in quantities too
small to be megascopically visible in dark-colored chalcedony, lime -
stone, sandstone, and quartzite beds.
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Vine, James D. & Prichard, George E. Geology and Uranium Occurrences in the Miller Hill Area Carbon County, Wyoming, report, May 1956; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1050789/m1/6/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.