The Unnamed (near Bingo Mountain) is a copper and 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 Bingo Mountain) MRDS details
Site Name
Primary: Unnamed (near Bingo Mountain)
Commodity
Primary: Copper
Primary: Gold
Secondary: Silver
Location
State: Alaska
District: Ketchikan
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: Low-sulfide Au-quartz vein
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Pyritization of tuffaceous phyllite country rock.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Gangue: Quartz
Gangue: Calcite
Comments
Comment (Reference): Primary Reference = Karl, 1992
Comment (Workings): Workings / Exploration = Samples of the sulfide-bearing green phyllite contained up to 0.5 ppm Ag, 300 ppm Cu, and 300 ppm Cr; a sample of a quartz-calcite-pyrite vein contained 0.21 ppm Au (Karl, 1992, loc. 7a-c).
Comment (Deposit): Model Name = Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Comment (Geology): Geologic Description = The country rocks in the area of this site are Upper Jurassic or Cretaceous flyschlike metasedimentary rocks that are gradationally interbedded with andesitic or basaltic metatuff (Berg, 1972 [i 684]; Karl, 1992). The rocks were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time. The occurrences are quartz-calcite-pyrite veins in green tuffaceous phyllite that also contains disseminated minute cubes of pyrite (Karl, 1992, loc. 7). Samples of the sulfide-bearing green phyllite contained up to 0.5 ppm Ag, 300 ppm Cu, and 300 ppm Cr; a sample of a quartz-calcite-pyrite vein contained 0.21 ppm Au (Karl, 1992, loc. 7a-c).
Comment (Geology): Age = Probably Late Cretaceous or younger.
References
Reference (Deposit): Berg, H.C., 1972, Geologic map of Annette Island, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-684, 8 p., 1 sheet, scale 1:63,360,
Reference (Deposit): Karl, S.M., 1992, Map and table of mineral deposits on Annette Island, Alaska: U.S. Geological Survey Open-File Report 92-690, 57 p., 1 map, scale 1:63,360.
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