Grizzly Bear

The Grizzly Bear is a copper 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: Grizzly Bear
Secondary: Grizzly

Commodity

Primary: Copper
Secondary: Gold
Secondary: Tungsten

Location

State: Alaska
District: Valdez Creek

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Porphyry Cu-Au
Model Name: Low-sulfide Au-quartz vein
Model Name: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Silicification; iron oxide

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcopyrite

Comments

Comment (Deposit): Model Number = 20c, or 36a, or 22c

Comment (Reference): Primary Reference = Csejtey and Miller, 1978

Comment (Workings): Workings / Exploration = Grab sample of limonitic metabasalt yielded 5.17% Cu, 0.4 ppm Au, 550 ppm W (Kurtak and others, 1992).

Comment (Deposit): Model Name = Porphyry Cu-Au or gold-quartz vein or polymetallic vein? (Cox and Singer, 1986; model 20c, or 36a, or 22c?)

Comment (Deposit): Other Comments = Lode claims held in 1974.

Comment (Geology): Geologic Description = Sulfide-bearing felsic dike cuts Triassic metabasalt; also, low-grade, vein or disseminated sulfides occur in silicified, mafic metavolcanic rocks.

Comment (Exploration): Status = Inactive

References

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Cobb, E.H., and Csejtey, Bela, Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-716, 63 p.

Reference (Deposit): Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 20 p., 1 plate, scale 1:250,000.

Reference (Deposit): Kurtak, J.M., Southworth, D.D., Balen, M.D., and Clautice, K.H., 1992, Mineral investigations in the Valdez Creek mining district, south-central Alaska: U.S. Bureau of Mines Open-File Report 1-92, 659 p., 2 plates, scale 1:250,000.

Reference (Deposit): Singer, D.A., Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and discussion of the metalliferous and selected nonmetalliferous mineral resources of the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-588-Q, 33 p., 1 plate, scale 1:250,000.

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