Unnamed (west of Rendu Inlet)

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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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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