The Unnamed is a copper and zinc 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
Satelite View
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 (east of lower Nabesna Glacier)
Commodity
Primary: Copper
Primary: Zinc
Location
State: Alaska
District: Chisana
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
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Felsic Volcanic Rock
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Permian
Name: Felsic Volcanic Rock
Role: Associated
Age Type: Associated Rock
Age Young: Late Permian
Name: Felsic Volcanic Rock
Role: Associated
Age Type: Associated Rock
Age Young: Late Permian
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Sphalerite
Gangue: Pyrite
Gangue: Quartz
Comments
Comment (Exploration): Status = Inactive
Comment (Workings): Workings / Exploration = Channel sample across 1 ft qtz vein assayed: 0.06 ppm Au, 15 ppm Ag, >20,000 ppm Cu, 15 ppm Mo, 700 ppm Pb, >10,000 ppm Zn (USGS OF 398, no. 226). Type of workings: surface.
Comment (Geology): Geologic Description = Quartz-pyrite vein containing chalcopyrite and sphalerite in quartz porphyry. Porphyry is altered silicic tuff or shallow intrusive in Upper Paleozoic Tetelna Volcanics.
Comment (Reference): Primary Reference = Richter, 1973, USGS I-789
Comment (Deposit): Model Name = Lode:, vein
Comment (Deposit): Other Comments = See also unnamed deposits NB045, NB046.
References
Reference (Deposit): Richter, D.H., 1973, Reconnaissance geological map of the Nabesna A-1 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map 1-789, scale 1:63,360.
Reference (Deposit): Richter, D.H., Singer, D.A., and Cox, D.P., 1975, Mineral resources map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-655-K, scale 1:250,000.
Reference (Deposit): Richter, D.H., and Matson, N.A., 1970, Geochemical data from the Nabesna A-4 quadrangle, Alaska: U.S. Geological Survey Open-File Report 70-276, 14 p., 1 sheet, scale 1:63,360.
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