Last Chance Creek

The Last Chance Creek is a pge 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: Last Chance Creek

Commodity

Primary: PGE
Tertiary: Chromium

Location

State: Alaska
District: Goodnews Bay

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Placer PGE-Au

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Alluvium
Role: Host
Age Type: Host Rock
Age Young: Holocene

Analytical Data

Not available

Materials

Not available

Comments

Comment (Reference): Primary Reference = Mertie, 1976

Comment (Workings): Workings / Exploration = A Defense Minerals Exploration Administration contract funded drilling of 50 exploration holes in alluvium along the east side of Red Mountain between Last Chance and Dowry Creeks in 1953. The depths of these drill holes ranged from 5 to 51 feet and the PGM content ranged from 0 to 0.0085 ounce of PGM per cubic yard (Fechner, 1988, p. 80).

Comment (Commodity): Ore Material = Platinum-group metal (PGM) alloys

Comment (Geology): Geologic Description = Platinum-bearing alluvium is reported to be present in this creek, but apparently not in mineable grades or volumes (Mertie, 1976). A Defense Minerals Exploration Administration contract funded drilling of 50 exploration holes in alluvium along the east side of Red Mountain between Last Chance and Dowry Creeks in 1953. The depths of these drill holes ranged from 5 to 51 feet and the PGM content ranged from 0 to 0.0085 ounce of PGM per cubic yard (Fechner, 1988). Last Chance Creek flows across Paleozoic or Mesozoic sedimentary and igneous rocks that are intruded by the Jurassic Red Mountain ultramafic pluton (Hoare and Coonrad, 1978). The border zone of this pluton is within a few hundred feet of the upstream limit of the creek.

Comment (Deposit): Model Name = Placer PGE-Au (Cox and Singer, 1986; model 39b)

Comment (Exploration): Status = Active?

Comment (Geology): Age = Quaternary.

References

Reference (Deposit): Fechner, S.A., 1988, Bureau of Mines mineral investigation of the Goodnews Bay mining district, Alaska: U.S. Bureau of Mines Open-File Report 1-88, 230 p.

Reference (Deposit): Mertie, J.B., Jr., 1976, Platinum deposits in the Goodnews Bay district, Alaska: U.S. Geological Survey Professional Paper 938, 42 p.

Reference (Deposit): Cobb, E.H., 1977, Placer deposit map of central Alaska: U.S. Geological Survey Open-File Report 77-168B, 64 p., 1 map, scale 1:1,000,000.

Reference (Deposit): Cobb, E.H., 1980, Summaries of data and lists of references to metallic and selected nonmetallic mineral deposits in fifteen quadrangles in southwestern and west-central Alaska: U.S. Geological Survey Open-File Report 80-909, 103 p.

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