The Unnamed (southwest of lower Scott Glacier) is a zinc and 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
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Unnamed (southwest of lower Scott Glacier) MRDS details
Site Name
Primary: Unnamed (southwest of lower Scott Glacier)
Commodity
Primary: Zinc
Primary: Copper
Secondary: Silver
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
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Pyrrhotite
Ore: Chalcopyrite
Ore: Bornite
Comments
Comment (Deposit): Other Comments = Occurrence is in the Chugach National Forest.
Comment (Geology): Geologic Description = This occurrence consists of a 1000 ft. x 200 ft. outcrop area containing several shear zones up to several feet wide in slate and graywacke of the Tertiary Orca Group (Nelson and others, 1985). Sulfides, including bornite, chalcopyrite, pyrrhotite, and sphalerite, occur as lenses and disseminations both in the country rocks and in the shear zones (Jansons and others, 1984). Samples collected and analyzed by the U.S. Bureau of Mines showed the following results. Seven chip samples contained 39 ppm to 2.3% Cu, 68 ppm to 5.9% Zn, and <0.1 ppm to 29 ppm Ag. Seven grab samples contained 36 ppm to 14.8% Cu, 58 ppm to 8.7% Zn, and 0.1 ppm to 8 oz. Ag/ton.
Comment (Reference): Primary Reference = Jansons and others, 1984
Comment (Reserve-Resource): Reserves = Inferred reserves of 19,300 tons @ 1.06% Cu, 2.06% Zn, and 13.6 ppm Ag (Jansons and others, 1984).
Comment (Workings): Workings / Exploration = Samples collected and analyzed by the U.S. Bureau of Mines showed the following results. Seven chip samples contained 39 ppm to 2.3% Cu, 68 ppm to 5.9% Zn, and <0.1 ppm to 29 ppm Ag. Seven grab samples contained 36 ppm to 14.8% Cu, 58 ppm to 8.7% Zn, and 0.1 ppm to 8 oz. Ag/ton (Jansons and others, 1984).
Comment (Exploration): Status = Inactive
References
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): 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., 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, scale 1:250,000.
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