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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Grizzly Bear MRDS details
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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