Upper Black River

The Upper Black River is a copper and molybdenum 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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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Upper Black River
Secondary: Unnamed (upper Black River)

Commodity

Primary: Copper
Primary: Molybdenum
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: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Porphyry Cu-Au
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: Molybdenite

Comments

Comment (Workings): Workings / Exploration = Analyses of float samples contain up to 0.15 ppm Au, 0.69% Cu, 446 ppm Mo, 180 ppm W; placer samples have anomalous concentrations of Au, Pb, W, and Zn (Kurtak and others, 1992).

Comment (Deposit): Model Name = Porphyry Cu-Au or porphyry Cu-Mo? (Cox and Singer, 1986; model 20c or 21a?)

Comment (Geology): Geologic Description = Mineralized float samples collected from a large drainage area underlain by Jurassic granodiorite cut by NE-trending shear zones.

Comment (Reference): Primary Reference = Kurtak and others, 1992

Comment (Exploration): Status = Inactive

References

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.

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