The Okpilak River is a uranium and molybdenum mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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Okpilak River MRDS details
Site Name
Primary: Okpilak River
Commodity
Primary: Uranium
Primary: Molybdenum
Secondary: Fluorine-Fluorite
Secondary: REE
Location
State: Alaska
District: Canning
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Granite
Role: Host
Age Type: Host Rock
Age Young: Early Devonian
Name: Granite
Role: Host
Age Type: Associated Rock
Age Young: Early Devonian
Analytical Data
Not available
Materials
Ore: Molybdenite
Gangue: Fluorite
Comments
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = None
Comment (Deposit): Model Name = Disseminated, felsic-hosted
Comment (Geology): Geologic Description = Fluorite, molybdenite and (?)yttrocerite occur in samples of granite of Okpilak batholith. Representative sample in peripheral zone of granite contains 50 ppm eU. Heavy mineral fractions of concentrates contain 0.034-0.080% eU and 0.010-0.033% U.
Comment (Commodity): Gangue = yttrocerite
Comment (Geology): Age = Probably Early Devonian
References
Reference (Deposit): Cobb, E.H., Mayfield, C.F., and Brosg?, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.
Reference (Deposit): Cobb, E.H., Mayfield, C.F., and Brosge, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.
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