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  3. Mineral Resource Data System (MRDS)

Avan Hills

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

Geologic information

Identification information

Deposit ID 10003394
MRDS ID A106150
Record type Site
Current site name Avan Hills

Geographic coordinates

Geographic coordinates: -161.90374, 68.24946 (WGS84)
Relative position Location plotted is locality 1 of Foley and others (1989, p. 2); in headwaters area of Avan River about 2.3 mi (3.7 km) northeast of peak 3970; located to within 2 mi (3.2 km).

Site location context

Political divisions (FIPS codes)

North Slope(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Misheguk Mountain S(quadrangle 1:100,000 scale)

Misheguk Mountain(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Noatak River(hydrologic unit)

Noatak River-Lisburne Peninsula(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Noatak National Preserve(National Preserve)

National Preserve NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Chromium Critical Primary
PGE Critical Primary

Mineral occurrence model information

Model code 15
USGS model code 8a
Deposit model name Podiform chromite (minor)
Mark3 model number none

Nearby scientific data

(1) -161.90374, 68.24946
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Bedrock consists of variably serpentinized rocks of a Jurassic? mafic/ultramafic complex that includes dunite, wehrlite, peridotite, clinopyroxenite, and gabbro.
  • Age = Jurassic

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Comments on the reserve resource information

  • Reserves = Estimated Cr2O3 content measured in 26 deposits ranges from 465,000 to 1,734,000 short tons. The area contains at least 50 other minor or unmeasured chromite lode occurrences, and also has potential for large, low-grade chromite and PGE placer deposits.

Comments on the workings information

  • Workings / Exploration = Platinum and palladium were detected in chromite-bearing dunite (0.014 troy oz/st Pt) and in chromite concentrates (0.016 troy oz/st Pd). Iridium was detected in a pan concentrate sample (0.0036 troy oz/st).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Foley and others (1989)

General comments

Subject category Comment text
Deposit Model Name = Podiform chromite

Reporter information

Type Date Name Affiliation Comment
Reporter 22-OCT-1992 J.M. Schmidt 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.