Chagvan Bay

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

Geologic information

Identification information

Deposit ID 10307613
Record type Site
Current site name Chagvan Bay

Geographic coordinates

Geographic coordinates: -161.75267, 58.80925 (WGS84)
Relative position The Chagvan Bay occurrence is 4.5 miles of the modern beach, extending from 1.5 miles south of the mouth of Salmon River to the sand spit at the mouth of Chagvan Bay. The map site is at the approximate midpoint of the 4.5-mile-long of beach. This is locality 13 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

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) -161.75267, 58.80925

Comments on the geologic information

  • Geologic Description = Berryhill (1963) collected 5 auger samples along this segment of the Kuskokwim Bay beach. Heavy mineral concentrates from these samples contained greater than 10 percent chromite and trace amounts of gold and platinum.
  • Age = Holocene.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Goodnews Bay

Comments on the workings information

  • Workings / Exploration = No workings are present; there was surface sampling in the 1950's and probably at other times (Berryhill, 1963).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF HG015

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; beach (Cox and Singer, 1986; model 39b)

Reporter information

Type Date Name Affiliation Comment
Reporter 18-MAR-01 Travis L. Hudson Applied Geology