The Reger Pyrrhotite is a copper and nickel 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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Reger Pyrrhotite MRDS details
Site Name
Primary: Reger Pyrrhotite
Commodity
Primary: Copper
Primary: Nickel
Secondary: Iron
Location
State: Alaska
District: McGrath
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: Noril'sk Cu-Ni-PGE
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Copper bearing sulfides oxidized to azurite and malachite.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrrhotite
Gangue: Limonite
Comments
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = Herreid, 1968
Comment (Workings): Workings / Exploration = The Reger Pyrrhotite occurrence was found by R.D. Reger during field investigations by the Alaska Department of Natural Resources in 1967 (Herreid, 1968). A sample collected in the mineralized aureole contains 230 ppm copper and 600 ppm nickel.
Comment (Geology): Age = Unknown; dike rock is undated.
Comment (Deposit): Other Comments = See Chip Loy deposit (MG032).
Comment (Geology): Geologic Description = The Reger Pyrrhotite occurrence is in a limestone-slate thermal aureole 760 meters north of the contact of the Middle Fork Plutonic complex (Solie, 1983). A steeply dipping mafic dike of Tertiary (?) age is covered by limonite and contains abundant disseminated pyrrhotite. The sulfide-bearing dike continues upward to an elevation of at least 3,750 feet (1,143 m). Azurite and malachite staining was noted. A sample collected in the mineralized area contains 230 ppm copper and 600 ppm nickel (Herreid, 1968).
Comment (Deposit): Model Name = Unknown--possibly disseminated Ni-Cu-PGE type (Cox and Singer, 1986; model 5b).
References
Reference (Deposit): Solie, D.N., 1983, The Middle Fork plutonic complex, McGrath A-3 quadrangle, southwest Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 83-16, 22 pages.
Reference (Deposit): Herreid, G.H., 1968, Geological and geochemical investigations southwest of Farewell, Alaska: Alaska Division of Mines and Geology Geologic Report 26, 24 p., 1 sheet, scale 1:75,000.
Reference (Deposit): Gilbert, W.G., Solie, D.N., and Kline, J.T., 1988, Geologic map of the McGrath A-3 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 92, 2 sheets, 1:63,360 scale.
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