Smalls River

Prospect in Alaska, United States with commodity Platinum

Geologic information

Identification information

Deposit ID 10094075
MRDS ID A013206
Record type Site
Current site name Smalls River
Related records 10308508

Geographic coordinates

Geographic coordinates: -161.74269, 58.98925 (WGS84)
Relative position Smalls River is the main drainage on the north side of Red Mountain. This prospect is about 1.5 miles from Kuskokwim Bay along the Platinum to Goodnews Bay Mining Camp road. The location is an exploration drill hole that was drilled along the north side of the road. The map site is inthe SW 1/4 of section 2, T 14 S, R 75 W, of the Seward Meridian. The location is very approximate, probably to within 1.2 mile. This prospect is locality 5 of Cobb (1972 [MF 362]; 1980 [OF 80-909]).
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Geographic areas

Country State
United States Alaska


Commodity Importance
Platinum Primary

Comments on the commodity information

  • Ore Material = Platinum-group metal (PGM) alloys


  • (Local) All volcanic rocks in the center of the crater exhibit intense argillic alteration and have been totally replaced by white clay (kaolinite?).

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Alluvium

Nearby scientific data

(1) -161.74269, 58.98925

Comments on the geologic information

  • Geologic Description = Mertie (1969, p. 81; 1976, p. 5) reports that a 192-foot-deep exploration drill hole at this location intersected platinum- and gold-bearing material but it was apparently only a local concentration. Smalls River is the main drainage on the north side of the Red Mountain ultramafic pluton.
  • Age = Quaternary.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive
  • Status = Inactive

Mining district

District name Goodnews Bay

Comments on the workings information

  • Workings / Exploration = An exploration hole was drilled 192 feet to bedrock at this location.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013206
USGS Alaska Resource Data File ARDF HG031
USGS Alaska Resource Data File ARDF RI001

Bibliographic references

  • Deposit

    Mertie, J.B., Jr., 1969, Economic geology of platinum minerals: U.S. Geological Survey Professional Paper 630, 120 p.

  • Deposit

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

  • 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.

  • 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.

Comments on the references

  • Primary Reference = Mertie, 1969

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