The Gemuk Mountain is a gold and antimony 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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Gemuk Mountain MRDS details
Site Name
Primary: Gemuk Mountain
Commodity
Primary: Gold
Primary: Antimony
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: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Simple Sb (veins, pods, etc)
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Ore: Pyrite
Ore: Stibnite
Gangue: Quartz
Comments
Comment (Workings): Workings / Exploration = Surface examination and sampling has occurred, probably including some by private companies since that of Clark and others (1970).
Comment (Deposit): Model Name = Simple Sb deposits (Cox and Singer, 1986; model 27d)
Comment (Geology): Geologic Description = This occurrence is a mineralized shear zone between granitic rocks and thermally metamorphosed quartzite and shale (Clark and others, 1970). Discontinuous gold-bearing quartz-stibnite masses, 1- to 6-inches wide, occur as pods and lenses in fault gouge and breccia. Polished sections show the vein margins to be quartz and stibnite and the cores to be silificied fragments of biotite diorite in a quartz matrix. Pyrite is common at the margins of the silicified biotite diorite fragments. The mineralized zone trends N 50 W, is nearly vertical, and at least 2 feet wide. Native gold is at the margins of the stibnite-rich pods and lenses. Three vein samples contained gold values of 82, 94, and 100 ppm (Clark and others, 1970).
Comment (Reference): Primary Reference = Clark and others, 1970
Comment (Geology): Age = Late Cretaceous or Early Tertiary . Possibly the age of many granitic plutons in the region.
References
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Taylor Mountains quadrangle: U.S. Geological Survey Miscellaneous Field Studies Map MF-384, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Dillingham, Sleetmute, and Taylor Mountains quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-606, 92 p.
Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Dillingham, Sleetmute, and Taylor Mountain quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-606, 92 p.
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