The Unnamed (near the head of Portage Bay) 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 (near the head of Portage Bay) MRDS details
Site Name
Primary: Unnamed (near the head of Portage Bay)
Commodity
Primary: Copper
Secondary: Silver
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: Porphyry Cu
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Deposit): Other Comments = This site is located on land conveyed to or patented by the Bristol Bay Native Corporation.
Comment (Exploration): Status = Inactive
Comment (Deposit): Model Name = Porphyry copper? (Cox and Singer, 1986; model 17)
Comment (Geology): Age = Tertiary.
Comment (Reference): Primary Reference = MacKevett and Holloway, 1977
Comment (Workings): Workings / Exploration = U.S. Bureau of Mines records indicate claims were staked on this occurrence in the mid-1960's.
Comment (Geology): Geologic Description = The area is underlain by volcanic rocks of the Meshik Formation of Oligocene and Eocene ages (Detterman and others, 1981). MacKevett and Holloway (1977) indicate alteration and porphyry type mineralization possibly associated with Tertiary intrusives.
References
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): U.S. Bureau of Mines, 1973, Alaska 1:250,000-scale quadrangle map overlays showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report 20-73, 95 overlays (updated in 1986, 1987).
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