The Unnamed (near Ella Point) is a zinc 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 Ella Point) MRDS details
Site Name
Primary: Unnamed (near Ella Point)
Commodity
Primary: Zinc
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
Model Name: Sedimentary exhalative Zn-Pb
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Sphalerite
Comments
Comment (Deposit): Model Name = Sedimentary exhalative Zn-Pb? (Cox and Singer, 1986; model 31a)
Comment (Deposit): Other Comments = Site is in Misty Fiords National Monument Wilderness.
Comment (Geology): Geologic Description = The country rocks near Ella Point consist of pelitic and quartzofeldspathic paragneiss that is intruded by an elongate stock of Cretaceous leucocratic granodiorite and quartz monzonite (Berg and others, 1988). The paragneiss represents marine argillaceous and clastic strata that underwent regional high-grade regional metamorphism in Cretaceous or Tertiary time. The premetamorphic age of the strata is uncertain. Most are probably Paleozoic, but some may be as young as Mesozoic and some as old as Precambrian (Berg and others, 1988; Gehrels and others, 1990; Crawford and others, in press). ? According to Berg and Cobb (1967, p. 182), 'A zinc-bearing lode that may be similar to the one at Moth Bay [KC086] is on the west shore of Bradfield Canal near Ella Point, where pyrite and sphalerite reportedly replace sericitic schist.' No other information about this occurrence has been made public.
Comment (Reference): Primary Reference = Berg and Cobb, 1967
References
Reference (Deposit): Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.
Reference (Deposit): Elliott, R.L., Berg, H.C., and Karl, Susan, 1978, map and table describing metalliferous and selected nonmetalliferous mineral deposits, Ketchikan and Prince Rupert quadrangles, Alaska: U.S. Geological Survey Open-file Report, 78-73-B,17 p., scale 1:250,000.
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): Gehrels, G.E., McClelland, W.C., Samson, S.D., Patchett, P.J., and Jackson, J.L., 1990, Ancient continental margin assemblage in the northern Coast Mountains, southeast Alaska and northwest Canada: Geology, v. 18, p. 208-211.
Reference (Deposit): Crawford, M.L., Crawford, W.A., and Gehrels, G.E., 2000, Terrane assembly and structural relationships in the eastern Prince Rupert quadrangle, British Columbia, in H.H. Stowell and W.C.McClelland, eds., Tectonics of the Coast Mountains, southeastern Alaska and British Columbia: Boulder, Colorado, Geological Society of America Special Paper 343, p. 1-21.?
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