Unnamed (head of Kiwalik River)

The Unnamed (head of Kiwalik River) is a zinc, lead, copper, and silver 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 (head of Kiwalik River)

Commodity

Primary: Zinc
Primary: Lead
Primary: Copper
Primary: Silver

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: Oxidation, carbonate replacement, and tourmaline.

Rocks

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

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Sphalerite
Ore: Silver
Ore: Galena
Gangue: Quartz

Comments

Comment (Geology): Age = Mid-Cretaceous or younger.

Comment (Exploration): Status = Inactive

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

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

Comment (Commodity): Ore Material = argentiferous galena

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.

Comment (Geology): Geologic Description = This occurrence is located adjacent to the mid-Cretaceous Quartz Creek pluton, a hook-shaped, quartz monzonite body. The pluton is surrounded by a N 15 W-trending alteration zone about 18 miles long and 2 to 5 miles wide. The alteration zone is in Jurassic-Cretaceous andesitic volcanic rocks, and is marked by carbonate-quartz replacement, and tourmaline. Fine-grained dikes of varying composition cut the andesites near the pluton. Dikes near the Quartz Creek pluton are locally mineralized. At this occurrence disseminated galena occurs in oxidized carbonate-quartz rock. ?Analytical results from a composite grab sample were: 3 ppm Ag, 500 ppm Cu, greater than 2% Pb, and greater than 1% Zn (Miller and Elliott, 1969, number 35).

Comment (Commodity): Gangue = Carbonates

Comment (Deposit): Model Name = Sulfides in altered andesite.

References

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): 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., 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.

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