The Bobtail Creek is a gold 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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Bobtail Creek MRDS details
Site Name
Primary: Bobtail Creek
Commodity
Primary: Gold
Secondary: Mercury
Location
State: Alaska
District: Marshall
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Placer Au-PGE
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Cinnabar
Ore: Gold
Comments
Comment (Geology): Age = Quaternary.
Comment (Reference): Primary Reference = Hickok and McAtee, 1990
Comment (Workings): Workings / Exploration = About 2,500 feet of dragline workings are present on Bobtail Creek.
Comment (Reserve-Resource): Reserves = Hickok and McAtee (1990, p. 11) conclude that reserves are present along and below the old tailings.
Comment (Geology): Geologic Description = Bobtail Creek was mostly mined by dragline in the 1930's. Mining took place from an elevation of about 220 feet,downstream for a distance of about 2,500 feet (Hickok and McAtee, 1990). The tailings gravel mostly comprise siltstone and shale, along with 10 percent or less chert, rhyolite, tuff, and andesite (Hickok and McAtee, 1990, p. 11). Joesting (1942) reported that rare cinnabar accompanies the placer gold. Hickok and McAtee (1990) estimated that 2,000 to 4,000 ounces of gold were recovered from Bobtail Creek and that reserves exist along and below the old tailings. Bobtail Creek heads on the ridge where the rhyolite-hosted Kako lode gold prospect (RM007) is located.
Comment (Production): Production Notes = Hickok and McAtee (1990) estimate that 2 to 4 thousand ounces of gold were recovered from Bobtail Creek.
Comment (Deposit): Model Name = Placer Au (Cox and Singer, 1986; model 39a)
References
Reference (Deposit): Joesting, H.R., 1942, Strategic mineral occurences in interior Alaska: Alaska Territorial Department of Mines Pamphlet 1, 46 p.
Reference (Deposit): Hoare, J M., and Cobb, E.H., 1972, Metallic mineral resources map of the Russian Mission quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-444, 1 sheet, scale 1:250,000.
Reference (Deposit): Hickok, B., and McAtee, J., 1990, Lode gold occurrences near the Kako and Stuyahok placer mines, southwestern Alaska: Calista Corporation, Anchorage, unpublished report, 17 p.
Reference (Deposit): Hoare, J M., and Cobb, E.H., 1972, Metallic mineral resources map of the Russian Mission quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-444, scale 1:250,000.
Reference (Deposit): Hoare, J.M., and Cobb, E.H., 1977, Mineral occurrences (other than mineral fuels and construction materials) in the Bethel, Goodnews, and Russian Mission quadrangles, Alaska: U.S. Geological Survey Open-File Report 77-156, 98 p.
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