Unnamed (near Mt. Kachauik)

The Unnamed (near Mt. Kachauik) is a tungsten 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 (near Mt. Kachauik)

Commodity

Primary: Tungsten
Secondary: Beryllium

Location

State: Alaska
District: Council

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: W skarn

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Calc-silicate minerals are developed in the impure marble country rocks adjacent to the Kachauik pluton. Oxidation of iron-bearing minerals in the intrusive rocks is indicated by iron-oxide staining.

Rocks

Not available

Analytical Data

Not available

Materials

Gangue: Fluorite

Comments

Comment (Workings): Workings / Exploration = No workings or exploration acitivities are known but regional stream sediment geochemistry and airborne radiometric surveys may have been completed in the area.

Comment (Reference): Primary Reference = Gamble, 1988

Comment (Commodity): Gangue = Calc-silicates

Comment (Deposit): Model Name = W skarn (Cox and Singer, 1986; model 14a).

Comment (Geology): Geologic Description = This occurrence is along the north contact of the Kachauik pluton with schistose Ordovician chlorite marble (Till and others, 1986). The plutonic rock at this location is described as a hybrid diorite with abundant biotite (Till and others, 1986). Other parts of the Kachauik pluton to the south are leucocratic, granodiorite to quartz monzonite (Miller and others, 1972). A composite sample of iron-stained intrusive rocks and fluorite-bearing calc-silicate hornfels contained 100 ppm W and 20 ppm Be (Gamble, 1988). The Kachauik pluton is mid-Cretaceous; a K/Ar date for the pluton is 86.1 +/- 3 Ma (Miller and others, 1972).

Comment (Geology): Age = Mid-Cretaceous; a K/Ar date for the Kachauik pluton is 86.1 +/- 3 Ma (Miller and others, 1972).

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.

Reference (Deposit): Miller, T.P., Grybeck, D.J., Elliott, R.L., and Hudson, T.L., 1972, Preliminary geologic map of the eastern Solomon and southeastern Bendeleben quadrangles, eastern Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-256, 11 p.

Reference (Deposit): Gamble, B.M., 1988, Non-placer mineral occurrences in the Solomon, Bendeleben, and southern part of the Kotzebue quadrangles, western Alaska: U.S. Geological Survey Map MF-1838-B, 13 p., 1 sheet, scale 1:250,000.

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