The Union Gulch 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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Union Gulch MRDS details
Site Name
Primary: Union Gulch
Commodity
Primary: Gold
Location
State: Alaska
District: Nome
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Placer Au-PGE
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Comments
Comment (Workings): Workings / Exploration = It is not known if other than small-scale and local hand mining took place at this site.
Comment (Reference): Primary Reference = Collier and others, 1908
Comment (Deposit): Model Name = Alluvial placer Au (Cox and Singer, 1986; model 39a).
Comment (Exploration): Status = Inactive
Comment (Geology): Geologic Description = The gravels in Union Gulch are only 10 to 20 feet wide and 30 inches thick, but they are auriferous and estimated to contain about 0.2 ounce of gold per cubic yard (Collier and others, 1908). The coarse and rusty gold is concentrated on bedrock. High-angle faults juxtapose marble- and schist-rich units in this area (Hummel, 1962 [MF 247]).
Comment (Geology): Age = Quaternary.
References
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.
Reference (Deposit): Collier, A. J., Hess, F.L., Smith, P.S., and Brooks, A.H., 1908, The gold placers of parts of Seward Peninsula, Alaska, including the Nome, Council, Kougarok, Port Clarence, and Goodhope precincts: U.S. Geological Survey Bulletin 328, 343 p.
Reference (Deposit): Hummel, C.L., 1962, Preliminary geologic map of the Nome C-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-247, 1 sheet, scale 1:63,360.
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