Unnamed (on Quartz Creek)

The Unnamed (on Quartz Creek) is a silver, zinc, and lead 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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Site Name

Primary: Unnamed (on Quartz Creek)

Commodity

Primary: Silver
Primary: Zinc
Primary: Lead
Secondary: Gold

Location

State: Alaska
District: Fairhaven

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: Hydrothermal.

Rocks

Name: Hornblendite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Hornblendite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Analytical Data

Not available

Materials

Ore: Arsenopyrite
Ore: Gold
Ore: Pyrite
Ore: Sphalerite
Ore: Silver
Ore: Galena
Gangue: Calcite
Gangue: Quartz

Comments

Comment (Workings): Workings / Exploration = The area has been mapped and examined by the U.S. Geological Survey and various exploration companies.

Comment (Reference): Primary Reference = Miller and Elliott, 1969

Comment (Deposit): Other Comments = This site is one of numerous occurrences of argentiferous galena, sphalerite, pyrite and arsenopyrite in an 18-mile-long, 2- to 5-mile-wide zone of altered andesite surrounding the Quartz Creek quartz monzonite pluton. The altered zone trends N 15 W, across the drainage basins of Quartz Creek and the Kiwalik River, parallel to prominent lineaments in the area.

Comment (Deposit): Model Name = Sulfides in quartz and calcite veins that cut andesite.

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Late Cretaceous.

Comment (Geology): Geologic Description = The country rocks in the area of this occurrence include the Upper Cretaceous Quartz Creek pluton, and Jurassic-Cretaceous andesitic volcanic rocks that are cut by fine-grained dikes less than 30 feet thick. The dikes contain quartz and calcite veins carrying disseminated pyrite, arsenopyrite, argentiferous galena, and sphalerite. The veins occur near the contact with quartz monzonite of the Quartz Creek pluton. Analyses of grab samples by Miller and Elliot (1969) gave the following results: location 2A contained 70 ppm Cu and 700 ppm Pb; location 3B contained 20 ppm Ag, 300 ppm Cu, greater than 2% Pb, and greater than 1 % Zn. The mineral occurrences in the Quartz Creek area are generally anomalous in boron and tin.

Comment (Commodity): Ore Material = argentiferous galena

References

Reference (Deposit): Miller, T.P., and Elliott, R.L., 1969, Metalliferous deposits near Granite Mountain, eastern Seward Peninsula, Alaska: U.S. Geological Survey Circular 614, 19 p.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 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 Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.

Reference (Deposit): Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p.

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