The Unnamed (in headwaters of Penny Creek) is a copper 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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Unnamed (in headwaters of Penny Creek) MRDS details
Site Name
Primary: Unnamed (in headwaters of Penny Creek)
Commodity
Primary: Copper
Primary: Gold
Location
State: Alaska
District: Nome
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicification (?) and oxidation; the development of silica-rich rocks at or near the the base of Paleozoic marble overlying characterizes this type of copper occurrence.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Malachite
Gangue: Quartz
Comments
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Unknown; if stratigraphic controls are important then it is probably Paleozoic in age.
Comment (Workings): Workings / Exploration = No exploration or development work is reported for this occurrence.
Comment (Deposit): Model Name = Copper-bearing mineralization in silica-rich zones at or near base of marble.
Comment (Geology): Geologic Description = This occurrence is one of several in the area where sparse disseminated copper minerals, mainly malachite, occur in silica-rich rocks along the contact between marble and schist. Grab samples of these rocks contain 0.13 to 0.78 percent Cu but generally only traces of gold. However, samples from this specific locality contained 0.02 to 0.08 ounces Au per ton and 0.02 to 0.04 ounces Ag per ton (Asher, 1969, DGGS R33). This type of copper occurrence is present at several localities in the western Solomon quadrangle (Gamble, 1988) and has similarities to several in the Kougarok area of the northeastern Teller quadrangle. In the Teller quadrangle, the Ward mine (TE071) is an example of this type of copper mineral occurrence. The Ward mine has been described as a zone of silicification in marble above a thrust contact with underlying metapelitic schist (Sainsbury and others, 1969; Sainsbury, 1975, p. 90-94). The silica-rich rocks have been metamorphosed and commonly have a laminar fabric. Copper-bearing minerals, mostly malachite but also including azurite and in places chalcopyrite and possibly bornite, are disseminated in the silica-rich rocks. The minor sulfides tend to be along faint laminae and joints (Sainsbury and others, 1969, p. 22). Malachite and azurite also occur in small veins and veinlets in the silica-rich rocks. The summary characterization of this type of Seward Peninsula mineral deposit by Sainsbury (1975, p. 90-94) contains inconsistencies with some descriptions of these deposits. Their origin is uncertain and other possibilities should be considered. One possiblity is that the silica-rich rocks are quartzites and that there is a stratigraphic control to the Ward deposit and similar occurrences elsewhere on Seward Peininsula. Quarzite at the base of the regional carbonate assemblage is recognized elsewhere in the Kougarok Mountain area (Puchner, 1986, p. 1777). Bedrock in the area of this occurrence is part of a lower Paleozoic metasedimentary assemblage (Till and others, 1986).
Comment (Reference): Primary Reference = Asher, 1969 (DGGS R33)
References
Reference (Deposit): Sainsbury, C.L., Kachadoorian, Reuban, Hudson, Travis, Smith, T.E., Richards, T.R., and Todd, W.E., 1969, Reconnaissance geologic maps and sample data, Teller A-1, A-2, A-3, B-1, B-2, B-3, C-1, and Bendeleben A-6, B-6, C-6, D-5, and D-6 quadrangles. Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 377, 49 p., 12 sheets, scale 1:63,360.
Reference (Deposit): Sainsbury, C.L., 1975, Geology, ore deposits, and mineral potential of the Seward Peninsula, Alaska: U.S. Bureau of Mines Open-File Report 73-75, 108 p., 3 sheets, scale 1:250,000.
Reference (Deposit): Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.
Reference (Deposit): Puchner, C.C., 1986, Geology, alteration, and mineralization of the Kougarok Sn deposit, Seward Peninsula, Alaska; Discussion reply: Economic Geology, v. 82, p. 2201-2204.
Reference (Deposit): Gamble, B.M., 1988, Non-placer mineral occurrences in the Solomon, Bendeleben, and southern part of the Kotzebue quadrangles, western Alaska: U.S. Geological Survey Map MF-1838-B, 13 p., 1 sheet, scale 1:250,000.
Reference (Deposit): Asher, R.R., 1969, Geologic and geochemical study, Solomon C-5 quadrangle, Seward Peninsula, Alaska: Alaska Division of Mines and Geology Geologic Report 33, 64 p.
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