Unnamed (south of Nunatak Fiord)

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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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

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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