The Unnamed (on Weather Ridge) is a lead 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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Unnamed (on Weather Ridge) MRDS details
Site Name
Primary: Unnamed (on Weather Ridge)
Commodity
Primary: Lead
Primary: Silver
Location
State: Alaska
District: Fairhaven
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
Alteration Type: L
Alteration Text: Quartz-carbonate replacement and tourmaline.
Rocks
Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Silver
Ore: Galena
Gangue: Calcite
Gangue: Quartz
Gangue: Tourmaline
Comments
Comment (Reference): Primary Reference = Miller and Elliott, 1969
Comment (Workings): Workings / Exploration = The area has been mapped and examined by the U.S. Geological Survey and by various exploration companies.
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Late Cretaceous.
Comment (Geology): Geologic Description = This occurrence consists of a galena-bearing calcite vein 1 foot thick that cuts Jurassic-Cretaceous altered andesitic volcanic rocks near the contact with quartz monzonite of the Late Cretaceous Quartz Creek pluton. The alteration is marked by quartz-carbonate replacement, and tourmaline (also see Additional comments). A grab sample of the vein contained: 20 ppm Ag, 200 ppm Cu, 1.5% Pb, and 700 ppm Zn (Miller and Elliott, 1969).
Comment (Deposit): Model Name = Sulfides in altered quartz monzonite.
Comment (Deposit): Other Comments = This site is one of numerous occurrences of argentiferous galena, sphalerite, pyrite and arsenopyrite in an 18-mile-long, 2- to 5-mile-wide zone of altered andesite surrounding the Quartz Creek quartz monzonite pluton. The altered zone trends N 15 W, across the drainage basins of Quartz Creek and the Kiwalik River, parallel to prominent lineaments in the area.
Comment (Commodity): Ore Material = argentiferous galena
References
Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 1 sheet, scale 1:250,000.
Reference (Deposit): Miller, T.P., and Elliott, R.L., 1969, Metalliferous deposits near Granite Mountain, eastern Seward Peninsula, Alaska: U.S. Geological Survey Circular 614, 19 p.
Reference (Deposit): Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p.
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