Unnamed [on Pete Dahl (Copper Sands) Island]

The Unnamed [on Pete Dahl (Copper Sands) Island] is a gold 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: Unnamed [on Pete Dahl (Copper Sands) Island]

Commodity

Primary: Gold
Secondary: Nickel
Secondary: Titanium
Secondary: Chromium
Secondary: Iron
Secondary: Zirconium
Secondary: Vanadium
Secondary: Manganese

Location

State: Alaska
District: Copper River

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: Placer Au-PGE

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Commodity): Ore Material = Native gold

Comment (Exploration): Status = Inactive

Comment (Deposit): Other Comments = Islands in the Copper River delta change shape considerably due to storms and sedimentation supply. The islands are in the Chugach National Forest.

Comment (Deposit): Model Name = Placer gold (Cox and Singer, 1986; model 39a)

Comment (Workings): Workings / Exploration = One analysis from a 5-cm-thick surface layer from the west end of the island contained 0.25 ppm Au (Reimnitz and Plafker, 1976).

Comment (Geology): Geologic Description = This occurrence consists of widespread beach and flood plain black sand deposits containing heavy minerals. Input of sands is from the Copper River where the supply of material is high. Reimnitz and Plafker (1976) report that the sands extend offshore to depths up to 50 m. They also report that the beaches of the Copper River delta contain as much gold and other heavy minerals as beaches that have been mined elsewhere along this coast. One analysis from a 5-cm-thick surface layer from the west end of the island contained 0.25 ppm Au (Reimnitz and Plafker, 1976).

Comment (Commodity): Gangue = Beach sand

Comment (Reference): Primary Reference = Reimnitz and Plafker, 1976

Comment (Geology): Age = Recent beach sands.

References

Reference (Deposit): Reimnitz, Erk, and Plafker, George, 1976, Marine gold placers along the Gulf of Alaska margin: U.S. Geological Survey Bulletin 1415, 16 p.

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