The Syenite Gulch is a 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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Syenite Gulch MRDS details
Site Name
Primary: Syenite Gulch
Commodity
Tertiary: Thorium
Tertiary: Uranium
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
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Thorite
Comments
Comment (Deposit): Other Comments = Stream gradient over 200 feet per mile.
Comment (Commodity): Ore Material = uranothorianite
Comment (Deposit): Model Name = Radioactive minerals in stream sediments.
Comment (Workings): Workings / Exploration = In 1947, the U.S. Geological Survey sampled the creek to evaluate the radioactive mineral potential.
Comment (Reference): Primary Reference = Gault and others, 1953
Comment (Geology): Geologic Description = At this occurrence, uranothoriate and thorite(?) occur in stream sediments overlying monzonite or syenite of the Late Cretaceous Granite Mountain pluton (Gault and others, 1953). Samples from prospect pits indicate that the amount of radioactivity decreases with depth. The highest equivalent uranium value from the samples was 0.088%.
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Late Cretaceous.
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): Gault, H.R., Killeen, P.L., West, W.S., and others, 1953, Reconnaissance for radioactive deposits in the northeastern part of the Seward Peninsula, Alaska, 1945-47 and 1951: U.S. Geological Survey Circular 250, 31 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.
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