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  3. Mineral Resource Data System (MRDS)

Chirikof Island

Occurrence in Alaska, United States with commodity Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10003490
MRDS ID A106248
Record type Site
Current site name Chirikof Island

Geographic coordinates

Geographic coordinates: -155.56238, 55.89934 (WGS84)
Relative position This site is the beach area on the north and northeast coast of Chirikof Island (MacKevett and Holloway, 1977, locality 3). The island is shown on an inset on the USGS Trinity Island 1:250,000 scale quadrangle map.

Site location context

Political divisions (FIPS codes)

Kodiak Island(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chirikof Island D-5(quadrangle 1:63,360 scale)

Chirikof Island(quadrangle 1:100,000 scale)

Trinity Islands W OE(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Shelikof Strait(hydrologic unit)

Kodiak-Shelikof(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -155.56238, 55.89934
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Black sands occur along the northeast coast and at the extreme north end of the island for a distance of approximately 10 miles (Gassaway, 1935). These sands commonly occur as thin surface crusts on the beaches near high-tide levels. Some crusts were also noted on local sand dunes. On the northern tip of the island a narrow strip of black sand about 6 inches thick and extending about 1/8 mile was noted. The presence of gold in the black sands was found to be very sporadic as indicated in panned samples taken by Gassaway.
  • Age = Quaternary

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Kodiak

Comments on the workings information

  • Workings / Exploration = The beach areas had been prospected prior to 1935 (Gassaway). U.S. Bureau of Mines claim map shows no apparent activity after 1950.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Gassaway, 1935

General comments

Subject category Comment text
Deposit Model Name = Gold placer (Cox and Singer, 1986; model 39a).

Reporter information

Type Date Name Affiliation Comment
Reporter 13-AUG-1998 S.H. Pilcher U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.