The Unnamed (between South Fork Koyukuk River and Mosquito Fork) is a copper 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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Unnamed (between South Fork Koyukuk River and Mosquito Fork) MRDS details
Site Name
Primary: Unnamed (between South Fork Koyukuk River and Mosquito Fork)
Commodity
Primary: Copper
Secondary: Nickel
Location
State: Alaska
District: Koyukuk
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
Alteration Type: L
Alteration Text: Possible oxidation of copper minerals.
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Exploration): Status = Inactive
Comment (Commodity): Ore Material = Unspecified copper sulfides and/or malachite-azurite
Comment (Geology): Geologic Description = This occurrence is described only as Cu sulfides and/or malachite-azurite stains (DeYoung, 1978) at the contact between a Devonian(?) black phyllite-slate unit and a Devonian(?) unit described as diorite intrusives and andesite flows (Brosgi and Reiser, 1964). The presence of a hornfels adjacent to the igneous unit suggests that the igneous unit is a diorite intrusive. No other information is available.
Comment (Reference): Primary Reference = Brosgi and Reiser, 1964
References
Reference (Deposit): DeYoung, J.H., Jr., 1978, Mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-878-B, 2 sheets, scale 1:250,000.
Reference (Deposit): Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-457, 1 sheet, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Chandalar and Wiseman quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-340, 205 p.
Reference (Deposit): Cobb, E.H., and Cruz, E.L., 1983, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in the Chandalar quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-278, 91 p.
Reference (Deposit): Brosgi, W.P., and Reiser, H.N., 1964, Geologic map and section of the Chandalar quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map 1-375, 1 sheet, scale 1:250,000.
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