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  3. Mineral Resource Data System (MRDS)

East Fork Chulitna River

Occurrence in Alaska, United States with commodities Gold, Tin
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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 10307560
Record type Site
Current site name East Fork Chulitna River

Geographic coordinates

Geographic coordinates: -149.26281, 63.18959 (WGS84)
Relative position This site represents several placer gold occurrences along the East Fork Chulitna River. The occurrences are downstream for a distance of more than 2 miles from the map site, which is in the SW1/4 of sec 10, T. 20 S., R. 9 W., of the Fairbanks Meridian. This is location D-27 of Balen (1990: OFR 34-90).

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Healy A-5(quadrangle 1:63,360 scale)

Healy S(quadrangle 1:100,000 scale)

Healy(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Chulitna River(hydrologic unit)

Susitna River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Tin Critical Secondary

Materials information

Materials Type of material
Cassiterite Ore
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) -149.26281, 63.18959
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Placer samples taken from the East Fork Chulitna River, contain 6.7 ppm gold and 260 ppm tin (Balen, 1990: OFR 34-90). Tin granites are reported on the western side of the Chulitna Valley (for example, HE056), and similar granites are also mapped in the East Fork Chulitna drainage area (Wilson and others, 1998). These granites may be the source of both the tin (cassiterite?) and the placer gold.
  • Age = Quaternary.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Valdez Creek

Comments on the workings information

  • Workings / Exploration = Surface only.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = (Balen, 1990 OFR 34-90)

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-00 N. Van Wyck Stevens Exploration Management Corporation

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.