The Unnamed is a silver, molybdenum, lead, 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
Elevation:
Commodity: Silver, Molybdenum, Lead, Zinc
Lat, Long: 67.42, -156.28000
Map: View on Google Maps
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Unnamed MRDS details
Site Name
Primary: Unnamed
Commodity
Primary: Silver
Primary: Molybdenum
Primary: Lead
Primary: Zinc
Location
State: Alaska
District: Shungnak
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
Model Name: Skarn Cu
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Galena
Ore: Molybdenite
Ore: Sphalerite
Comments
Comment (Deposit): Model Name = Skarn
Comment (Geology): Geologic Description = Minor amounts ofgalena, sphalerite and molybdenite in granite near contact. Deposit is 1. 5 mi. (2.4 km) long and up to 20 ft. (6 m) thick. Granite intrudes sequence of limestone, dolomite, shale, graphite schist, and quartz-chlorite schist; it probably is an apophysis of the Shishakshinovik pluton ( Mayfield and Grybeck, 1978).
Comment (Reference): Primary Reference = Mayfield and Grybeck, 1978
Comment (Workings): Workings / Exploration = Surface workings and high geochem anomalies in Pb, Zn and Mo Mayfield and Grybeck (1978). One float boulder found in drainage contained 5% galena, 10%-15% pyrite, and 3% sphalerite. Degenhart, (1978, p. 391) reported several analyses of samples: sample BM 1230 contained 630 ppm Pb and 400 ppm Zn; a 900 ft (305 m) chip sample of granite (BM 1226) contained 2% Pb, 1.65% Zn, and 3 oz./ton (102 g/ton) Ag. Other mineralized float samples observed in the area. ??
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Mayfield, C.F. and Grybeck, D., 1978, Mineral occurrences and resource map of the Ambler river quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-120I, 1 sheet, scale 1:250,000.
Reference (Deposit): Degenhart, C.E., Griffis, R.J., McQuat, J.F., and Bigelow, C.G., 1978, Mineral studies of the western Brooks Range performed under contract to the U.S. Bureau of Mines, Contract #JO155089: U.S. Bureau of Mines Open-File Report 103-78, 529 p., 11 sheets.
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