The Unnamed (on Davidof and Lopy Islands) 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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Unnamed (on Davidof and Lopy Islands) MRDS details
Site Name
Primary: Unnamed (on Davidof and Lopy Islands)
Commodity
Primary: Iron
Secondary: Copper
Secondary: Lead
Secondary: Zinc
Location
State: Alaska
District: Aleutian Islands
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: The original flow rocks have been intensely altered to iron oxides, chlorite, magnetite, and quartz. The iron oxides may have resulted from the weathering of pyrite.
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Geology): Geologic Description = Davidof and Lopy Island consist entirely of Late Tertiary to Quaternary andesitic lava flows and pyroclastic rocks (Nelson, 1959). A large percentage of the rocks on the northern tip of Davidof Island and on the southern 1/2 of Lopy Island have been intensely altered to various shades of yellow, orange, and brown. Some of these altered zones may contain traces of copper, lead, and zinc. The most intensely altered rock consists entirely of iron oxide, chlorite, magnetite, and quartz.
Comment (Deposit): Other Comments = Site is located within the Alaska Maritime Natural Wildlife Refuge.
Comment (Reference): Primary Reference = Nelson, 1959
Comment (Geology): Ore Material = Iron-oxides
Comment (Geology): Age = Late Tertiary or Quaternary.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): Nelson, S.W., Nokleberg, W.J., Miller-Hoare, M., and Mullen M.W., 1979, Siniktanneyak Mountain ophiolite, in Johnson, K.M. and Williams, J.R., The United States Geological Survey in Alaska, Accomplishments during 1978: U.S. Geological Survey Circular 804-B, p. B14-B16
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