Kalvich Area

The Kalvich Area is a fluorine-fluorite 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: Kalvich Area

Commodity

Primary: Fluorine-Fluorite
Primary: Lead
Secondary: Molybdenum
Secondary: Tungsten
Secondary: Tin
Secondary: Zinc
Secondary: Copper

Location

State: Alaska
District: Noatak

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: Skarn Zn-Pb

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

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

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

Analytical Data

Not available

Materials

Ore: Fluorite
Ore: Galena
Ore: Malachite

Comments

Comment (Deposit): Model Name = Skarn

Comment (Workings): Workings / Exploration = A representative bedrock chip sample from a 100 ft. by 7 ft. (33 m x 2 m) area of highly foliated fine grained intrusive rock yielded 86 ppm Cu, 2000 ppm Pb, 94 ppm Zn, 53 ppm Mo, 14 ppm Ag, 34 ppm Sn, 1400 ppm F (Degenhart and others, 1978, p. 340-350).???

Comment (Deposit): Other Comments = This occurrence is one of several small skarn zones at granitic contacts through out the Ambler River quadrangle (Degenhart and others, 1978). Located in the Noatak National Preserve.

Comment (Geology): Geologic Description = Disseminated pyrite, galena, fluorite and malachite in Kalvich pluton along contact zone. Deposit is 1 mi (1.6 km) in strike length. Visual estimate of 1% galena and 1% fluorite in granitic rock along north margin of pluton. About 8 sq. mi. (13 sq km0 of the surrounding area is geochemically anomalous in Pb and Zn. n. The Kalvich pluton is in contact with black siltstone interbedded with marble and quartz-mica schist to the north and east and with gray to black marble of the Skajit limestone to the south and west. The northern margin of the pluton is a migmatitic contact zone containing moderately anomalous Pb, Zn, Mo, Sn and W (Degenhart and others, 1978, p. 340-350).

Comment (Reserve-Resource): Reserves = the possibility of even a small tonnage of economic grade material being discovered is remote.

Comment (Reference): Primary Reference = Degenhart and others, 1978

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Degenhart, C.E., Griffis, R.J., McQuat, J.F., and Bigelow, C.G., 1978, Mineral studies of the western Brooks Range performed under contract to the U.S. Bureau of Mines, Contract #JO155089: U.S. Bureau of Mines Open-File Report 103-78, 529 p., 11 sheets.

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