The Unnamed (on Shapka Island) is a 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
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 (on Shapka Island) MRDS details
Site Name
Primary: Unnamed (on Shapka Island)
Commodity
Primary: Antimony
Secondary: Arsenic
Location
State: Alaska
District: Alaska Peninsula
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
Alteration Type: L
Alteration Text: Some of the dikes are described as 'altered'.
Rocks
Not available
Analytical Data
Not available
Materials
Gangue: Quartz
Gangue: Calcite
Comments
Comment (Geology): Age = Eocene or younger.
Comment (Reference): Primary Reference = Wilson and others, 1988
Comment (Workings): Workings / Exploration = Rock samples 84ACe113-116, collected by the U.S. Geological Survey in the mid-1980's, were reported to be anomalous in antimony and arsenic (Wilson and others, 1988).
Comment (Geology): Geologic Description = This occurrence is in rocks mapped as Eocene to Oligocene Mashik Formation (Wilson and others, 1995). Potassium-argon dating of hornblende from leuco-basalt gave an age of 43 million years (Wilson and others, 1994). Sandstone and siltstone are cut by felsic and porphyritic hornblende andesite(?) or diorite dikes. Some of the dikes are sulfide-bearing (Wilson and others, 1988). A slightly altered hornblende diorite dike is cut by a shear zone or by fractures filled with carbonate or quartz veins. Rock samples are reported to be anomalous in antimony and arsenic.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Angeloni, L.M., Wilson, F.H., and Sutlet, S., 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-470, 179 p., 1 map sheet, scale 1:250,000.
Reference (Deposit): Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.
Reference (Deposit): Wilson, F.H., Shew, N., DuBois, G.D., and Bie, S.W., 1994, Sample locality map and analytical data for potassium-argon ages in the Port Moller, Stepovak Bay and Simeonof Island quadrangles, Alaska Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2155-E, 18 p., 1 map sheet, scale 1:250,000.
Reference (Deposit): Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.
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.
