The Unnamed (southeast of upper Finger Glacier) is a nickel 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 (southeast of upper Finger Glacier) MRDS details
Site Name
Primary: Unnamed (southeast of upper Finger Glacier)
Commodity
Primary: Nickel
Primary: Copper
Location
State: Alaska
District: Yakutat
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: Chalcopyrite
Ore: Nickel
Ore: Pentlandite
Ore: Pyrrhotite
Comments
Comment (Workings): Workings / Exploration = Surface exposure of mineralized rock; no workings.
Comment (Deposit): Model Name = Lode: Disseminated copper and nickel-bearing minerals in dioritic phase(?) of layered mafic intrusive.
Comment (Deposit): Other Comments = Chugach terrane. The location is in Glacier Bay National Park and Preserve.
Comment (Commodity): Ore Material = pentlandite or nickeliferous pyrrhotite
Comment (Reserve-Resource): Reserves = Possible reserves contained in sulfide-bearing lenses as much as 10 feet thick and traceable for 500 feet.
Comment (Reference): Primary Reference = Mark-Anthony, 1977
Comment (Geology): Geologic Description = Based on its reported location, the occurrence is in the central part of the Crillon-LaPerouse layered mafic-ultramafic intrusion of Tertiary age. The occurrences were described as 'lenses of nickel-bearing pyrrhotite in diorite within the mafic intrusion' (Mark-Anthony, 1977; also, communication Leo Mark-Anthony, 1998). A sample collected by Mark-Anthony contained 0.83 percent nickel and 0.18 percent copper. Copper is abundant enough to form a separate phase, probably chalcopyrite.
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Tertiary.
References
Reference (Deposit): Mark-Anthony, Leo, 1977, Maps and notes on investigations in Glacier Bay, 1958-1960. (Unpublished material available at U.S. Bureau of Land Management library, Juneau, Alaska).
Reference (Deposit): Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.
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