The Unnamed (coast south of Kwain Bay) 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 (coast south of Kwain Bay) MRDS details
Site Name
Primary: Unnamed (coast south of Kwain Bay)
Commodity
Primary: Iron
Secondary: Cobalt
Secondary: Molybdenum
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
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Sericitization of sheared granitic rocks.
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Magnetite
Comments
Comment (Reference): Primary Reference = Karl, 1992
Comment (Workings): Workings / Exploration = A sample of altered granitic rock contained 150 ppm Co and 20 ppm Mo (Karl, 1992, loc. 38a, b).
Comment (Deposit): Model Name = Disseminated magnetite mineralization of undetermined origin.
Comment (Geology): Geologic Description = The country rocks in the area of this site are undivided, metamorphosed Silurian and Ordovician volcanic, sedimentary, and intrusive rocks; and Silurian trondhjemite that intrudes the Silurian and Ordovician rocks (Berg, 1972, Berg and others, 1988). The rocks were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time. The occurrences consist of veinlets and disseminations of magnetite in shear zones in sericitized granitic rocks and schist. A sample of altered granitic rock contained 150 ppm Co and 20 ppm Mo (Karl, 1992, loc. 38a, b).
Comment (Geology): Age = Probably Late Cretaceous or younger.
References
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.
Reference (Deposit): Berg, H.C., Elliott, R.L., and Koch, R.D., 1988, Geologic map of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Mineral Investigations Series Map MF-1807,27 p., scale 1:250,000.
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,
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