The Unnamed is a uranium and thorium 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 MRDS details
Site Name
Primary: Unnamed
Commodity
Primary: Uranium
Primary: Thorium
Secondary: Rubidium
Secondary: Cerium
Location
State: Alaska
District: McGrath
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: Volcanogenic U
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene
Analytical Data
Not available
Materials
Not available
Comments
Comment (Geology): Age = Inferred to be early Tertiary, based on isotopic ages of Sischu Volcanics (Moll and others, 1981).
Comment (Workings): Workings / Exploration = Miller and others (1980) report values of 16.4 ppm uranium and 73.8 ppm thorium from grab samples. Clautice and others (1993) report lower uranium and thorium values than those reported by Miller and others, (1980), but up to 900 ppm rubidium, and elevated cerium levels.
Comment (Deposit): Other Comments = See MD001-004.
Comment (Geology): Geologic Description = Miller and others (1980) report anomalous uranium and thorium levels in slightly porphyritic, fine-grained rhyolite. No ore minerals were identified. Two areas of strongly radioactive rhyolite, each about 4 miles long by 1 to 2 miles wide (6.4 km by 0.8 km) , are separated by 2 miles (3.2 km) of ridgeline. Age is inferred to be early Tertiary, based on isotopic ages of Sischu Volcanics (Moll and others, 1981).? Miller and others (1980) report values of 16.4 ppm uranium and 73.8 ppm thorium from grab samples. Clautice and others (1993) report lower uranium and thorium values than those reported by Moll and others (1981), but up to 900 ppm rubidium, and elevated cerium levels.
Comment (Exploration): Status = Inactive
Comment (Reference): Primary Reference = Miller and others, 1980
Comment (Deposit): Model Name = Volcanogenic Uranium (Cox and Singer, 1986; model no. 25f)
References
Reference (Deposit): Miller, T.P., Moll, E.J., and Patton, W.W. Jr., 1980, Uranium and thorium rich volcanic rocks of the Sischu Creek area, Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-803, 27 pages.
Reference (Deposit): Moll, E.J., Silberman, M.L., and Patton, W.W. Jr., 1981, Chemistry, mineralogy, and K-Ar ages of igneous and metamorphic rocks of the Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811C, 15 p., 2 sheets, scale 1:250,000.
Reference (Deposit): Clautice, K.H., Bowman, N.D., Clough, J.G., Gilbert, W.G., Kline, J.T., Smith, T.E., and Blodgett, R.B., 1993, Land selection Unit 8 (Kantishna River, Ruby, and Medfra quadrangles): References, lead isotope, geochemical and major oxide data: Alaska Division of Geological and Geophysical Surveys, 42 p., 1 sheet, scale 1:250,000.
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