The Unnamed (south of Nunatak Fiord) is a gold 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 (south of Nunatak Fiord) MRDS details
Site Name
Primary: Unnamed (south of Nunatak Fiord)
Commodity
Primary: Gold
Secondary: Copper
Secondary: Cobalt
Location
State: Alaska
District: Yakutat
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
Model Name: Low-sulfide Au-quartz vein
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = Outcrop sample.
Comment (Reference): Primary Reference = MacKevett and Plafker, 1970.
Comment (Geology): Age = Tertiary
Comment (Geology): Geologic Description = Sulfide-bearing quartz veins a few inches wide occur in weakly metamorphosed schist-phyllite of original sedimentary and volcanic origin. The rocks belong to the Yakutat group. A representative sample of quartz vein material collected by MacKevett and Plafker (1970) contained anomalous amounts of gold, cobalt, and copper.
Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Comment (Deposit): Other Comments = MacKevett and Plafker (1970, sample number 67APr-34A) reported 0.08 ppm gold, 200 ppm cobalt, and 300 ppm copper in a grab sample of a quartz vein, chosen as representative of numerous quartz veins found at and near this location. Data on the occurrence are given in Cobb (1979).
References
Reference (Deposit): MacKevett, E.M., Jr., and Plafker, G., 1970, Geochemical and geophysical reconnaissance of parts of the Yakutat and Mount St. Elias quadrangles, Alaska: U.S. Geological Survey Bulletin 1312-L, 12 p.
Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bering Glacier, Icy Bay, Middleton Island, and Yakutat quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-1246, 41 p.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Yakutat quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-408, 1 sheet, scale 1:250,000.
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