West Ospook

The West Ospook 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

Name: West Ospook

State: Alaska

County: na

Elevation:

Commodity: Copper

Lat, Long: 60.14, -153.92000

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Satelite View

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Satelite image of the West Ospook

West Ospook MRDS details

Site Name

Primary: West Ospook

Commodity

Primary: Copper
Secondary: Molybdenum
Secondary: Lead

Location

State: Alaska
District: Bristol Bay

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: Porphyry Cu-Mo

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Magnetite
Ore: Pyrite

Comments

Comment (Exploration): Status = Inactive

Comment (Workings): Workings / Exploration = Soil and stream sediment samples yielded values of up to 1,800 ppm Cu, 183 ppm Mo, and 230 ppm Pb (Resource Associates of Alaska, 1976).

Comment (Production): Production Notes = No production

Comment (Reference): Primary Reference = Resource Associates of Alaska, Inc., 1976

Comment (Reserve-Resource): Reserves = No reserves

Comment (Geology): Geologic Description = Occurrence is associated with sulfide mineralization near contact between Tertiary granodiorite and Tertiary andesite porphyry. Sulfide mineralization is disseminated but mineralization is strongest along fracture zones at the contact of the granodiorite and andesite. Undefined Mo and Pb sulfide minerals occur at this locality. Andesite locally contains 2 to 4 percent disseminated pyrite, magnetite, and trace chalcopyrite. In the vicinity of the site andesite porphyry, tuffs, agglomerates, and other intermediate volcanic rocks are intruded by small gabbro and granodiorite bodies. Soil and stream sediment samples yielded values of up to 1,800 ppm Cu, 183 ppm Mo, and 230 ppm Pb (Resource Associates of Alaska, 1976).

Comment (Deposit): Other Comments = Possibility for hydrothermal vein or replacement deposit in the andesite near the granodiorite or along strongly fractured fault zones. Site is in Lake Clark National Park and Preserve.

Comment (Deposit): Model Name = Porphyry Cu -Mo ? (Cox and Singer, 1986; model 21a ?)

Comment (Geology): Age = Tertiary or younger.

References

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): Resource Associates of Alaska, Inc., 1976, Geology and geochemistry of certain land within the Lake Clark National Park: Contract report for U.S. Bureau of Mines, 109 p.

Reference (Deposit): Cobb, E.H., and Reed, B.L., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in the Iliamna, Lake Clark, Lime Hills, and McGrath quadrangles, Alaska - Supplement to Open-File Report 76-485: U.S. Geological Survey Open-File Report 81-1343-A, 25 p.

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