The Unnamed (north of Fisher Creek) 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 (north of Fisher Creek) MRDS details
Site Name
Primary: Unnamed (north of Fisher Creek)
Commodity
Primary: Copper
Location
State: Alaska
District: Circle
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: There is local oxidation of copper minerals.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Azurite
Ore: Chalcopyrite
Ore: Malachite
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = The area was mapped and sampled in the mid-1970s (Clark and Foster, 1971).
Comment (Reference): Primary Reference = Clark and Foster, 1971
Comment (Commodity): Gangue = Carbonate
Comment (Deposit): Model Name = Cu-quartz vein.
Comment (Deposit): Other Comments = This site is within the Yukon-Charley Rivers National Preserve.
Comment (Geology): Geologic Description = This unnamed occurrence is near a high-angle normal fault between Paleozoic to Precambrian pelitic schist on the south and Paleozoic phyllitic argillite on the north (Dover and Miyaoka, 1988). The occurrence consists of chalcopyrite and secondary copper minerals in quartz and carbonate veins in greenschist, greenstone, and thin carbonate layers. The vein material is estimated to be less than 3 percent of the exposed rock (Clark and Foster, 1971).
Comment (Exploration): Status = Probably inactive
References
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Charley River quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-390, 1 sheet, scale 1:250,000.
Reference (Deposit): Clark, S.H.B., and Foster, H.L., 1971, Geochemical and geological reconnaissance in the Seventymile River area, Alaska: U.S. Geological Survey Bulletin 1315, 21 p.
Reference (Deposit): Dover, J.A., and Miyaoka, R.T., 1988, Reinterpreted geologic map and fossil data, Charley River quadrangle, east-central Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2004, 2 sheets, 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 Charley River and Coleen quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-632, 45 p.
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