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  3. Mineral Resource Data System (MRDS)

Unnamed (at Peak 5532)

Prospect in Alaska, United States with commodities Copper, Chromium, Nickel
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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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10307579
Record type Site
Current site name Unnamed (at Peak 5532)

Geographic coordinates

Geographic coordinates: -147.73575, 63.00862 (WGS84)
Relative position This prospect is on Peak 5532, at the west-central edge of sec. 15, T. 22 S., R. 1 W., of the Fairbanks Meridian. The location is accurate to within 1,000 feet. This is location B-13 of Balen (1990: 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-2(quadrangle 1:63,360 scale)

Mount Hayes SW(quadrangle 1:100,000 scale)

Healy(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Susitna 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
Copper Primary
Chromium Critical Secondary
Nickel Critical Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Chromite Ore
Pentlandite Ore
Pyrrhotite Ore

Mineral occurrence model information

Model code 8
USGS model code 5
Deposit model name Mafic Cu-Ni association

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Triassic

Nearby scientific data

(1) -147.73575, 63.00862
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The country rocks at this prospect are Middle or Upper Triassic Nikolai Greenstone, and probably cogenetic, ultramafic dikes that cut the greenstone. The deposit consists of disseminations and pods of chalcopyrite, chromite, pentlandite, and pyrrhotite in within the ultramafic intrusive rocks. Samples contain as much as 0.41% chromium, 0.15% copper, 0.11% nickel, 28 ppb palladium, and 140 ppb platinum (Balen and others, 1991).
  • Age = the ore minerals probably are magmatic segregations in the Triassic ultramafic hostrocks.

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Probably inactive

Mining district

District name Valdez Creek

Comments on the workings information

  • Workings / Exploration = There has only been surface sampling to date.

Reference information

Bibliographic references

  • Deposit

    Balen, M.D., 1990, Geochemical sampling results from the Bureau of Mines Investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Open-File Report 34-90, 218 p., 2 plates, scale 1:250,000.

  • Deposit

    Balen, M.D., and others, 1991, Executive summary of the Bureau of Mines investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Special Publication, 43 p.

Comments on the references

  • Primary Reference = Balen and others, 1991

General comments

Subject category Comment text
Deposit Model Name = Cu-Ni-PGE (Cox and Singer, 1986; model 5)
Deposit Other Comments = This deposit was discovered in the 1980s, during a regional geologic reconnaissance by the Bureau of Land Management (Balen, 1990: OFR 34-90).

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.