National Uranium Resource Evaluation: Arminto Quadrangle, Wyoming
The Arminto Quadrangle in central Wyoming was evaluated for uranium favorability in accordance with specific criteria developed for the National Uranium Resource Evaluation program. Procedures consisted of geologic and radiometric surveying, rock and water sampling, studying well logs, and reviewing literature. Nine favorable environments were identified. Favorable environments include Cretaceous, Paleocene and Eocene sandstones of the Powder River Basin; Eocene sandstones of the Wind River Basin; the Cretaceous Cloverly Formation of the Casper Arch and Big Horn Basin; and Jurassic, Triassic, and Pennsylvanian sandstones of the Mayoworth area. Additional favorable environments include solution-breccia zones in the Madison Limestone at Mayoworth; Precambrian granites at Copper Mountain for authigenic deposits; and syngenetic uraniferous phosphates in lacustrine deposits at Lysite Mountain. Unfavorable environments include most Precambrian rocks; most lithologies of the Bighorn Basin; impermeable shales, silts, and carbonates; all strata of the Casper Arch, excluding the Cloverly Formation; and the Flathead Formation. Several Paleozoic and Mesozoic marine sands and the Madison limestone, excluding the Madison of the Mayoworth area, are unevaluated.
- Research Organization:
- Bendix Field Engineering Corp., Grand Junction, CO (USA). Grand Junction Operations
- DOE Contract Number:
- AC13-76GJ01664
- OSTI ID:
- 5297550
- Report Number(s):
- PGJ/F-018-82; ON: DE82018994
- Country of Publication:
- United States
- Language:
- English
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11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
DATA ANALYSIS
EVALUATION
FEDERAL REGION VIII
GEOLOGIC DEPOSITS
GEOLOGICAL SURVEYS
GEOPHYSICAL SURVEYS
HYDROGEN COMPOUNDS
MINERAL RESOURCES
NORTH AMERICA
OXYGEN COMPOUNDS
RADIOMETRIC SURVEYS
RESOURCES
ROCKS
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SANDSTONES
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SURVEYS
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WATER
WELL LOGGING
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