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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Unnamed [on Pete Dahl (Copper Sands) Island] MRDS details
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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