The Unnamed (north of the Tubutulik River) is a bismuth 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 (north of the Tubutulik River) MRDS details
Site Name
Primary: Unnamed (north of the Tubutulik River)
Commodity
Primary: Bismuth
Secondary: Tungsten
Location
State: Alaska
District: Koyuk
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
Not available
Analytical Data
Not available
Materials
Ore: Galena
Gangue: Quartz
Gangue: Fluorite
Comments
Comment (Geology): Age = Cretaceous ; Epigenetic mineralization in metamorphic rocks of Seward Peninsula is primarily of Cretaceous age.
Comment (Exploration): Status = Inactive
Comment (Deposit): Model Name = Bismuth in metamorphic rocks
Comment (Geology): Geologic Description = This occurrence is in the eastern-most part of the Bendeleben Mountains in an area of high-grade metamorphic rocks intruded by many small granitic bodies (Till and others, 1986). A grab sample of gossanous schist contained greater than 10,000 ppm bismuth (Miller and Grybeck, 1973). Another grab sample of calc-silicate hornfels, schist, and granitic rock contained 68 ppm Bi and 100 ppm W (Gamble, 1988).
Comment (Reference): Primary Reference = Miller and Grybeck, 1973
Comment (Workings): Workings / Exploration = Exploration activities at this location are not known but are probably minimal.
References
Reference (Deposit): Miller, T.P., and Grybeck, D.J., 1973, Geochemical survey of the eastern Solomon and southeastern Bendeleben quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 553, 115 p.
Reference (Deposit): Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.
Reference (Deposit): Gamble, B.M., 1988, Non-placer mineral occurrences in the Solomon, Bendeleben, and southern part of the Kotzebue quadrangles, western Alaska: U.S. Geological Survey Map MF-1838-B, 13 p., 1 sheet, scale 1:250,000.
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