The Little Susitna River is a tungsten and copper 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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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Little Susitna River MRDS details
Site Name
Primary: Little Susitna River
Commodity
Primary: Tungsten
Primary: Copper
Location
State: Alaska
District: Willow Creek
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: Chalcopyrite
Ore: Magnetite
Ore: Pyrite
Ore: Scheelite
Comments
Comment (Reference): Primary Reference = Jasper, 1967
Comment (Exploration): Status = Inactive
Comment (Geology): Geologic Description = Concentrate samples in stream gravels contain a few grains of scheelite and chalcopyrite (Jasper, 1967). Assays yielded up to 110 ppm Cu and 5 ppm Mo (Jasper, 1967). Nearby crystalline rocks include Tertiary to Cretaceous biotite-hornblende tonalite, and Jurassic amphibolite and foliated quartz diorite. Creek float dominantly quartz diorite.
Comment (Workings): Workings / Exploration = Assays yielded up to 110 ppm Cu and 5 ppm Mo (Jasper, 1967). Other pan concentrates include magnetite, pyrite, and zircon.
Comment (Geology): Age = Jurassic or younger, based on ages of bedrock in the area.
References
Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in the Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p.
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 1 sheet, scale 1:250,000.
Reference (Deposit): Jasper, M.W., 1967, Geochemical investigations along the Valdez to Chitina Highway, south-central Alaska: Alaska Division of Geological and Geophysical Surveys Geochemical Report 15, 33 p.
Reference (Deposit): Cobb, E.H., 1975, Tungsten occurrences in Alaska: U.S. Geological Survey Mineral Investigations Resource Map MR-66, 1 sheet, scale 1:250,000.
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