The Pmrgx-5 is a copper, silver, 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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Pmrgx-5 MRDS details
Site Name
Primary: Pmrgx-5
Commodity
Primary: Copper
Primary: Silver
Primary: Gold
Secondary: Zinc
Secondary: Lead
Secondary: Molybdenum
Location
State: Alaska
District: Alaska Peninsula
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: Porphyry Cu
Model Name: Porphyry Cu-Mo
Model Name: Porphyry Cu-Au
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Christie (1974) noted the presence of epidote, chlorite, and fine-grained sericite.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Chalcopyrite
Comments
Comment (Deposit): Other Comments = This site is located on land patented by, or interim-conveyed to, the Aleut Corporation.
Comment (Deposit): Model Name = Porphyry Cu, Porphyry Cu-Mo, Porphyry Cu-Au (Cox and Singer, 1986; models 17, 21a, 20c)
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = Wilson and others, 1988
Comment (Workings): Workings / Exploration = During his brief reconnaissance, Christie (1974) collected three silt or soil samples that contained as much as 0.04 ppm gold, 2.3 ppm silver, 151 ppm zinc, 575 ppm copper, and 11 ppm molybdenum. Rock samples 84AAi79 and 84AJm715, collected by the U.S. Geological Survey in the mid-1980s, were anomalous in copper, lead, and zinc (Wilson and others, 1988).
Comment (Geology): Age = Oligocene or younger.
Comment (Deposit): Model Number = 17, 21a, 20c
Comment (Geology): Geologic Description = Christie (1974) described a 6,000- by 3,000-foot color anomaly, elongate east-west and truncated at the coast on the north. Rocks in the area of the anomaly consist of altered granodiorite and diorite porphyry that intrude volcaniclastic rocks of the Oligocene to Miocene Belkofski Formation (Wilson and others, 1988). Abundant sulfides, including chalcopyrite and pyrite, are present, especially near the contact with the diorite porphyry. Moderate fracturing is widespread. Alteration minerals include chlorite, epidote, and fine-grained sericite. Christie collected three soil or silt samples containing as much as 0.04 ppm gold, 2.3 ppm silver, 151 ppm zinc, 575 ppm copper and 11 ppm molybdenum. Samples collected by the U.S. Geological Survey were anomalous in copper, lead, and zinc (Wilson and others, 1988).
References
Reference (Deposit): Angeloni, L.M., Wilson, F.H., and Sutlet, S., 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-470, 179 p., 1 map sheet, scale 1:250,000.
Reference (Deposit): Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.
Reference (Deposit): Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)
Reference (Deposit): Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.
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