Red Mountain

Occurrence in Alaska, United States with commodities Chromium, Gold, Platinum

Geologic information

Identification information

Deposit ID 10308604
Record type Site
Current site name Red Mountain

Geographic coordinates

Geographic coordinates: -161.75468, 58.94825 (WGS84)
Relative position This occurrence is on the west flank of Red Mountain, at an elevation of about 1,250 feet. It is sample locality 45 of Berryhill (1963) and is approximately located, probably within about 1/4 mile. It is locality 6 of Cobb (1972 [MF 362]; 1980 [OF 80-909]).
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Geographic areas

Country State
United States Alaska


Commodity Importance
Chromium Primary
Gold Secondary
Platinum Secondary

Materials information

Materials Type of material
Chromite Ore
Augite Gangue
Hornblende Gangue
Olivine Gangue

Mineral occurrence model information

Model code 120
USGS model code 39b
BC deposit profile C01. C02
Deposit model name Placer PGE-Au

Nearby scientific data

(1) -161.75468, 58.94825

Comments on the geologic information

  • Geologic Description = Berryhill (1963, sample locality 45) collected a shovel sample of surface materials at this location and determined that the heavy mineral concentrates contained greater than 10 percent chromite and traces of Pt and Au. Augite, hornblende, and olivine were also reported to be present in amounts exceeding 10 percent. This occurrence is on the steeper part of the west flank of Red Mountain, a composite ultramafic pluton containing abundant dunite. The surface materials at this site are expected to be colluvial and to have been derived directly from erosion of the Red Mountain pluton.
  • Age = Holocene.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Active

Mining district

District name Goodnews Bay

Comments on the workings information

  • Workings / Exploration = No workings are present.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF HG004

Bibliographic references

  • Deposit

    Berryhill, R.V., 1963, Reconnaissance of beach sands, Bristol Bay, Alaska: U.S. Bureau of Mines Report of Investigations 6214, 48 p.

  • 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.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Hagemeister Island quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-362, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Berryhill, 1963

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 18-MAR-2001 Travis L. Hudson Applied Geology