The Koyana Creek is a 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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Koyana Creek MRDS details
Site Name
Primary: Koyana Creek
Commodity
Primary: Gold
Secondary: Mercury
Location
State: Alaska
District: Council
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Placer Au-PGE
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Ore: Cinnabar
Comments
Comment (Workings): Workings / Exploration = Small open-cut placer pits are present. Most reported exploration activity in the area was focused on lode gold deposits (ARDF SO136).
Comment (Geology): Age = Quaternary; the placer deposits here are at low enough elevation (50 to 100 feet) to have been influenced by Quaternary sea level fluctuations.
Comment (Reference): Primary Reference = Cobb, 1978 (OF 78-181)
Comment (Deposit): Model Name = Placer Au-PGE (Cox and Singer, 1986; model 39a).
Comment (Geology): Geologic Description = Small-scale placer mining took place on Koyana Creek in the early part of the 1900's (Collier, 1908) and between 1928 and 1930 (Cobb, 1978, OF 78-181). The placer deposits were shallow and apparently low grade. Mulligan (1971) estimates that less than 100 ounces were produced. Cinnabar was recovered in the placer concentrates (Cathcart, 1922). The Koyana Creek area is better known for the lode gold prospects here (ARDF SO136) than for placer mining. Bedrock in the area is a lower Paleozoic metasedimentary sequence that includes marble and schist (Till and others, 1986).
Comment (Exploration): Status = Inactive ?
References
Reference (Deposit): Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Solomon quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-181, 185 p.
Reference (Deposit): Cathcart, S.H., 1922, Metalliferous lodes in southern Seward Peninsula: U.S. Geological Survey Bulletin 722, p. 163-261.
Reference (Deposit): Mulligan, J.J., 1971, Sampling gold lode deposits, Bluff, Seward Peninsula, Alaska, with a section on petrography by Walter L. Gnagy: U.S. Bureau of Mines Report of Investigations 7555, 40 p.
Reference (Deposit): Cobb, E.H., 1972, Metallic resources map of the Solomon quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-445, scale 1:250,000.
Reference (Deposit): Collier, A. J., Hess, F.L., Smith, P.S., and Brooks, A.H., 1908, The gold placers of parts of Seward Peninsula, Alaska, including the Nome, Council, Kougarok, Port Clarence, and Goodhope precincts: U.S. Geological Survey Bulletin 328, 343 p.
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.
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