The Unnamed (near California 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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Unnamed (near California Creek) MRDS details
Site Name
Primary: Unnamed (near California Creek)
Commodity
Primary: Gold
Location
State: Alaska
District: Aniak
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Low-sulfide Au-quartz vein
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Sericitization and silicification.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Ore: Pyrite
Gangue: Quartz
Gangue: Chlorite
Gangue: Calcite
Comments
Comment (Reference): Primary Reference = Frost, 1990
Comment (Workings): Workings / Exploration = Prospecting pit(s) are present at this location.
Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Comment (Geology): Geologic Description = Frost (1990) described gold- and pyrite-bearing quartz veins cutting sericitized andesite and volcaniclastic hornfels at this location. The veins are vuggy and contain euhedral quartz prisms extending into open spaces. Other gangue minerals in the iron oxide-stained veins are commonly calcite and chlorite. A quartz vein from this prospect contained 4.5 ppm gold (Frost, 1990, sample locality 3). Bedrock in the area includes thermally metamorphosed Jurassic volcanic or volcaniclastic rocks and a small granitic stock (Box and others, 1993). Much of the thermal metamorphism is caused by a large mid-Cretaceous granitic pluton exposed to the north in the headwaters of the Tuluksak River. This prospect may be close to a granitic dike outcrop described in unpublished 1945 and 1997 notes and memoranda by R. E. Wallace (USGS). The dike is cut by small, auriferous quartz veins along its southeast margin. A granitic dike outcrop cut by auriferous quartz veins is at the Wallace prospect, about one-half mile to the northeast along this ridge (RM025).
Comment (Geology): Age = Cretaceous or Tertiary. The gold-bearing quartz veins crosscut hornfels developed in country rocks around a mid-Cretaceous granitic pluton.
References
Reference (Deposit): Box, S.E, Moll-Stalcup, E.J., Frost, T.P., and Murphy, J.M., 1993, Preliminary geologic map of the Bethel and southern Russian Mission quadrangles, southwestern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2226-A, 20 p., scale 1:250,000.
Reference (Deposit): Frost, T.P., 1990, Geology and geochemistry of mineralization in the Bethel quadrangle, southwestern Alaska, in Goldfarb, R. J., Nash, J. T., and Stoeser, J. W., eds., Geochemical studies in Alaska by the U.S. Geological Survey, 1989: U.S. Geological Survey Bulletin 1950, p. C1-C9.
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