thumbnail

Summary of investigations of uranium deposits in the Pumpkin Buttes area, Johnson and Campbell Counties, Wyoming

Circular 338
This report concerns work done on behalf of the U. S. Atomic Energy Commission and is published with the permission of the Commission.
By: , , , and 
https://doi.org/10.3133/cir338

Links

Abstract

Uranium minerals were discovered in the Pumpkin Buttes area, Campbell and Johnson Counties, Wyo., by the U. S. Geological Survey in October 1951. From June to November 1952, an area of about 750 square miles was examined for uranium deposits, and 211 localities having abnormally high radioactivity were found; uranium minerals are visible at 121 of these localities. All known uranium mineralization in the area is restricted to sandstones of the Wasatch formation, except sparsely disseminated uranium in the sandstone of the White River formation, which caps the Pumpkin Buttes, mid several localities on the Great Pine Ridge southwest of the Pumpkin Buttes where iron-saturated sandstone and clinker in the Fort Union formation have above-normal radioactivity. The uranium occurrences in the Wasatch formation are in a red sandstone zone 450 to 900 feet above the base of the formation and are of two types: small concretionary masses of uranium, iron, manganese and vanadium minerals in sandstone, and irregular zones in which uranium minerals are disseminated in sandstone. The second type is usually larger but of lower grade than the first. Most of the localities at which uranium occurs are in a north-trending belt about 60 miles long and 18 miles in maximum width.

Suggested Citation

Troyer, M., McKay, E.J., Soister, P.E., and Wallace, S., 1954, Summary of investigations of uranium deposits in the Pumpkin Buttes area, Johnson and Campbell Counties, Wyoming: U.S. Geological Survey Circular 338, 17 p. :illus., maps (2 fold. in pocket) ;27 cm., https://doi.org/10.3133/cir338.

ISSN: 2330-5703 (online)

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Summary of investigations of uranium deposits in the Pumpkin Buttes area, Johnson and Campbell Counties, Wyoming
Series title Circular
Series number 338
DOI 10.3133/cir338
Year Published 1954
Language English
Publisher U.S. Geological Survey
Description 17 p. :illus., maps (2 fold. in pocket) ;27 cm.
Country United States
State Wyoming
County Campbell County;Johnson County
Other Geospatial Pumpkin Buttes Area
Additional publication details