The Unnamed is a copper 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 (upper Horsfeld Creek)
Commodity
Primary: Copper
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: Prospect
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: Volcanic Breccia (Agglomerate)
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Name: Volcanic Breccia (Agglomerate)
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Name: Volcanic Breccia (Agglomerate)
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = Grab sample of quartz vein assayed: 30 ppm Ag, 0.04 ppm Au, 10,000 ppm Cu, 7000 ppm Pb, 700 ppm Zn (USGS OF 471, sample 153). Type of workings: surface
Comment (Geology): Geologic Description = 2-ft-wide quartz vein containing chalcopyrite in volcanic breccia of the Chisana Formation of Cretaceous age.
Comment (Reference): Primary Reference = Richter and others, 1973, USGS I-807
Comment (Deposit): Model Name = Lode: vein
Comment (Exploration): Status = Inactive
References
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., Matson, N.A., Jr., and Smoll, H.R., 1973, Reconnaissance geologic map of the Nabesna A-1 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map 1-807, scale 1:63,360.
Reference (Deposit): Matson, N.A., and Richter, D.H., 1971, Geochemical data from the Nabesna A-1 quadrangle, Alaska: U.S. Geological Survey Open-File Report 71-0202, 10 p.
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