The Unnamed (shore of Annette 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 (shore of Annette Bay) MRDS details
Site Name
Primary: Unnamed (shore of Annette Bay)
Commodity
Primary: Copper
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
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Malachite
Ore: Chalcopyrite
Comments
Comment (Geology): Geologic Description = The country rocks in the area of this site are Upper Jurassic or Cretaceous andesitic and basaltic metavolcanic rocks that are gradationally interbedded with flyschlike metasedimentary rocks (Berg, 1972 [I 684]; Berg and others, 1988). The bedded rocks are intruded by a diorite stock, also of Jurassic or Cretaceous age. The rocks were regionally metamorphosed to .greenschist-grade phyllite and semischist in Late Cretaceous time. The occurrence consists of sparsely disseminated chalcopyrite in chloritic metavolcanic schist near the contact of the diorite stock (Karl, 1992, loc. 2). Malachite occurs locally on the foliation planes of the schist. Analyses of 15 samples collected in 1969-70 by private interests contained up to 468 ppm Cu.
Comment (Deposit): Model Name = Disseminated sulfide deposit of undetermined origin.
Comment (Workings): Workings / Exploration = Analyses of 15 samples collected in 1969-70 by private interests contained up to 468 ppm Cu (Karl, 1992, loc. 2).
Comment (Reference): Primary Reference = Karl, 1992
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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