The Unnamed (below McCune/Heney Glaciers) is a lead and 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 (below McCune/Heney Glaciers) MRDS details
Site Name
Primary: Unnamed (below McCune/Heney Glaciers)
Commodity
Primary: Lead
Primary: Gold
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
Model Name: Massive sulfide, Cyprus
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrrhotite
Ore: Galena
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = Site was sampled as part of a U.S. Bureau of Mines and U.S.G.S. mineral resource assessment of the Chugach National Forest (Jansons and others, 1984; Nelson and others, 1984). The area near the terminus of Heney Glacier was examined by industry in 1988 for placer gold (Kodosky and Teller, 1989).
Comment (Deposit): Model Name = Placer Au (Cox and Singer, 1986; model 39a) and Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Comment (Deposit): Other Comments = Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.
Comment (Geology): Geologic Description = The placer occurrence consists of small amounts of gold in alluvial and colluvial gravels derived from underlying metasedimentary rocks of the Upper Cretaceous Valdez Group (Nelson and others, 1985), and from the dunes near the terminus of Heney Glacier (Kodosky and Teller, 1989). A 0.1- cubic-yard sample assayed 0.0006 oz. Au/cubic yard (Jansons and others, 1984). In addition to the placer occurrence, Jansons and others (1984) describe a shear zone in Valdez Group metasedimentary and metavolcanic rocks in this area that contains galena and pyrrhotite. Analysis of a sample from the shear zone contained 0.14% Pb.
Comment (Reference): Primary Reference = Jansons and others, 1984
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Placer Au is Holocene. Sulfide mineralization is Late Cretaceous or younger, based on the age of the host rocks.
References
Reference (Deposit): Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, Southcentral Alaska: U.S. Bureau of Mines Open-File Report 5-84, 218 p., 2 sheets, scale 1:250,000.
Reference (Deposit): Nelson, S.W., Miller, M.L., Barnes, D.F., Dumoulin, J.A., Goldfarb, R.J., Koski, R.A., Mull, C.G., Pickthorn, W.J., Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral resource potential of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-A, 24 p., 1 plate, scale 1:250,000.
Reference (Deposit): Nelson, S.W., Dumoulin, J. A., and Miller, M.L., 1985, Geologic map of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-B, 16 p., 1 sheet, scale 1:250,000.
Reference (Deposit): Kodosky, Larry, and Teller, Steve, 1989, Economic mineral assessment of Chugach Alaska Corporation properties and selected land in the Copper, Bremner, and Tasnuna River area: unpublished report prepared for Chugach Alaska Corporation, Anchorage, Alaska, 116 p.
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