The Unnamed is a copper 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 MRDS details
Site Name
Primary: Unnamed
Commodity
Primary: Copper
Secondary: Silver
Secondary: Molybdenum
Secondary: Lead
Secondary: Zinc
Location
State: Alaska
District: Bering Sea
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: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Pyrite-enrichment of the Cretaceous volcanic rocks is noted but other aspects of alteration here are not described.
Rocks
Not available
Analytical Data
Not available
Materials
Gangue: Pyrite
Comments
Comment (Workings): Workings / Exploration = Stream sediments from the drainage on the north side of the site contain anomalous levels of several metals. These stream sediment samples, collected over a distance of 2 1/2 miles downstream from the pyrite-enriched area, contain up to 700 ppm copper, 70 ppm molybdenum, 500 ppm lead, 1 ppm silver, and 700 ppm zinc (Patton and Csejtey, 1972).
Comment (Deposit): Model Name = Polymetallic sulfide mineralization in altered volcanic rocks. Deposit model 22c (?); polymetallic veins
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Proximity of this mineralized area to the Poovookpuk Mountain prospect , although apparently more polymetallic in character, suggests that it is probably mid-Cretaceous, the age of K/Ar-dated intrusive and volcanic rocks on western St. Lawrence Island (Patton and Csejtey, 1980).
Comment (Geology): Geologic Description = An area of pyrite enrichment in Cretaceous volcanic rocks, over a mile across, was identified by Patton and Csejtey (1971, Figure 4). Although samples and descriptions of this area are not available, stream sediments from the drainage on its north side contain anomalous levels of several metals. These stream sediment samples, collected over a distance of 2 1/2 miles downstream from the pyrite-enriched area, contain up to 700 ppm copper, 70 ppm molybdenum, 500 ppm lead, 1 ppm silver, and 700 ppm zinc (Patton and Csejtey, 1972). These values suggest a polymetallic character to mineralization in the headwaters of this drainage.
Comment (Reference): Primary Reference = Patton and Csejtey, 1971 (PP 684-C)
References
Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Saint Lawrence quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-465, 1 sheet, scale 1:250,000.
Reference (Deposit): Cobb, E.H., 1980, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in fifteen quadrangles in southwestern and west-central Alaska: U.S. Geological Survey Open-File Report 80-909, 103 p.
Reference (Deposit): Patton, W.W., Jr., and Csejtey, Bela, Jr., 1980, Geologic map of St. Lawrence Island, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-1203, scale 1:250,000.
Reference (Deposit): Patton, W.W., Jr., and Csejtey, Bela, Jr., 1972, Analyses of stream sediment and rock samples from St. Lawrence Island, Alaska, 1966-1971: U.S. Geological Survey Open-File Report 72-293, 78 p.
Reference (Deposit): Patton, W.W., Jr., and Csejtey, Bela, Jr., 1971, Preliminary geologic investigations of western St. Lawrence Island, Alaska: U.S. Geological Survey Professional Paper 684-C, p. C1-C15.
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