The Unnamed is a copper and silver 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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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Unnamed MRDS details
Site Name
Primary: Unnamed
Secondary: Unnamed (on upper Sheep River)
Commodity
Primary: Copper
Primary: Silver
Secondary: Lead
Secondary: Gold
Location
State: Alaska
District: Yentna
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: Oxidation of Cu-minerals.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Malachite
Comments
Comment (Geology): Age = Late Cretaceous or younger, based on age of host.
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = Extent of exploration is apparently only the collection of a surface grab sample. Analysis of the float sample yielded 10 ppm Ag, 0.35 ppm Au, 5,000 ppm Cu, and 10 ppm Pb (Miller and others, 1978).
Comment (Geology): Geologic Description = Float sample of Late Cretaceous and Paleocene tonalite contained malachite-staining. Analysis of the float sample yielded 10 ppm Ag, 0.35 ppm Au, 5,000 ppm Cu, and 10 ppm Pb (Miller and others, 1978).
Comment (Reference): Primary Reference = Miller and others, 1978
References
Reference (Deposit): Cobb, E.H., and Csejtey, Bela, Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-716, 63 p.
Reference (Deposit): Miller, R.J., Cooley, E.F., O'Leary, R.M., Garmezy, larry, Csejtey, Bela, Jr., Smith, T.E., and Cleveland, M.N., 1978, Analysis of geochemical samples from the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-1052, 279 p.
Reference (Deposit): Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 20 p., 1 plate, scale 1:250,000.
Reference (Deposit): Singer, D.A., Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and discussion of the metalliferous and selected nonmetalliferous mineral resources of the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-588-Q, 33 p., 1 plate, scale 1:250,000.
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