The Unnamed (on David Island) is a iron 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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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 David Island) MRDS details
Site Name
Primary: Unnamed (on David Island)
Commodity
Primary: Iron
Secondary: Bismuth
Secondary: Lead
Secondary: Copper
Secondary: Molybdenum
Secondary: Arsenic
Secondary: Antimony
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
Model Name: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicification and other, undetermined, alteration.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Comments
Comment (Exploration): Status = Inactive
Comment (Deposit): Other Comments = This site is on land selected by the Koniag Native Corporation.
Comment (Reference): Primary Reference = Church and others 1989 (B-1859)
Comment (Workings): Workings / Exploration = The U.S. Geological Survey has geochemically sampled this occurrence (Church abd others, 1989, B-1858).
Comment (Geology): Geologic Description = This site is underlain by Miocene and Pliocene andesite and basalt flows, lithic tuffs, and breccias (Detterman and others, 1987). The rocks are locally silicified and exhibit other, undetermined alteration. Anomalous values in copper, molybdenum, and lead have been reported in samples of igneous rock (Wilson and O'Leary, 1986 ). A massive pyritic lode, 10 to 20 feet thick, is exposed at the wave base on the south side of a small point at the east end of the island and along the northeast shore (Church and others, 1989: B-1858). Grab samples of this material are anomalous in arsenic, bismuth, and antimony. Hydrothermal alteration is reportedly widespread along the northeast shore.
Comment (Deposit): Model Name = Polymetallic vein? (Cox and Singer, 1986; model 22c)
References
Reference (Deposit): Church, S.E., Frisken J.G., Wilson, F.H., 1989, Interpretation of exploration geochemical data from Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska: U.S Geological Survey Bulletin 1858, 45 p.
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