The Unnamed (west of Rendu Inlet) is a molybdenum 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 (west of Rendu Inlet) MRDS details
Site Name
Primary: Unnamed (west of Rendu Inlet)
Commodity
Primary: Molybdenum
Secondary: Copper
Location
State: Alaska
District: Juneau
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 Mo, low-F
Model Name: Porphyry Cu
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Molybdenite
Ore: Pyrite
Ore: Pyrrhotite
Gangue: Feldspar
Gangue: Quartz
Comments
Comment (Exploration): Status = Inactive
Comment (Geology): Age = Probably Cretaceous.
Comment (Deposit): Other Comments = Isolated occurrence of molybdenum and copper minerals in Glacier Bay National Park and Preserve.
Comment (Geology): Geologic Description = The area is mainly underlain by foliated granitic rock of Cretaceous age, subordinate marble of Paleozoic age and possibly argillic metasedimentary rocks of Devonian and Silurian age (Brew and others, 1978, pl. IA). Molybdenite, chalcopyrite, pyrite and pyrrhotite occur in quartz veins, less than 3 inches thick, at a spacing of several feet. Veins also occur in quartz-rich pegmatic dikes in a 25-foot thick zone in granitic rocks. The veins and dikes have variable strikes, but most strike northward and dip to the east ( MacKevett and others, 1971, p. 79; also table 9). No analyses were reported by either MacKevett and others or by Kimball and others, 1978).
Comment (Reference): Primary Reference = MacKevett and others, 1971
Comment (Deposit): Model Name = Copper-molybdenum stockwork mineralization. Porphyry Cu and porphyry Mo (Cox and Singer, 1986; model 17 and 21b).
Comment (Workings): Workings / Exploration = Surface exposure, no workings. No analyses reported.
References
Reference (Deposit): MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.
Reference (Deposit): Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p.
Reference (Deposit): Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.
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