The Unnamed (near Granite Creek) is a zinc, lead, gold, 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
Elevation:
Commodity: Zinc, Lead, Gold, Silver
Lat, Long: 65.23, -162.53000
Map: View on Google Maps
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Unnamed (near Granite Creek) MRDS details
Site Name
Primary: Unnamed (near Granite Creek)
Commodity
Primary: Zinc
Primary: Lead
Primary: Gold
Primary: Silver
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
Model Name: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Quartz-fluorite veining (and possibly other alteration of intrusive rocks) is present.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Galena
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Fluorite
Comments
Comment (Geology): Age = Cretaceous ; Epigenetic mineralization in metamorphic rocks of Seward Peninsula is primarily of Cretaceous age.
Comment (Reference): Primary Reference = Miller and Grybeck, 1973
Comment (Workings): Workings / Exploration = Workings have not been reported but mining claims have been staked in the area and were current as of 1975 (Hudson and others, 1977).
Comment (Geology): Geologic Description = Quartz-aplite breccia fillings and quartz-fluorite veins cut black slate hornfels (Miller and Grybeck, 1973). These contain up to several percent galena and sphalerite and minor chalcopyrite. Analytical data for four samples were reported by Miller and Grybeck (1973, Table 2). Two samples of aplite with disseminated galena and sphalerite each contain greater than 20,000 ppm Pb and greater than 10,000 ppm Zn; they also contain 30 and 50 ppm Ag and one contains 0.1 ppm Au. The other two samples from this locality contain anomalous Pb, Zn, and Ag as well as 0.02 and 0.04 ppm Au. This occurrence is in the hanging wall of the major normal fault that marks the southern boundary of the high grade metamorphic rocks and granitic intrusives of the Bendeleben Mountains (Till and others, 1986). Mining claims existed in this area in 1975 (Hudson and others, 1977).
Comment (Deposit): Model Name = Polymetallic veins ? (Cox and Singer, 1986; model 22c ?)
Comment (Exploration): Status = Probably inactive
References
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.
Reference (Deposit): Hudson, T.L., Miller, M. L., and Pickthorn, W. J., 1977, Map showing metalliferous and selected nonmetalliferous mineral deposits, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 77-796-B, 46 p., one sheet, scale 1:1,000,000.
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): 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.
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