Pmrgx-5

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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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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