The Unnamed (north of Mount Hamilton) 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
Satelite View
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.
Unnamed (north of Mount Hamilton) MRDS details
Site Name
Primary: Unnamed (north of Mount Hamilton)
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: Pyrite
Ore: Gold
Gangue: Quartz
Gangue: Chlorite
Gangue: Calcite
Comments
Comment (Commodity): Gangue = iron oxide
Comment (Geology): Age = Cretaceous or Tertiary. The gold-bearing quartz veins crosscut hornfels developed in country rocks around a mid-Cretaceous granitic pluton.
Comment (Reference): Primary Reference = Frost, 1990
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 12 ppm gold and 10 ppm silver (Frost, 1990, sample locality 1). Bedrock in the area includes thermally metamorphosed Jurassic volcanic or volcaniclastic rocks (Box and others, 1993). The thermal metamorphism is caused by a large mid-Cretaceous granitic pluton exposed to the west of Ophir Creek.
Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Comment (Workings): Workings / Exploration = Prospecting pit(s) are present at this location.
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.
The Top Ten Gold Producing States
These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.
