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  3. Mineral Resource Data System (MRDS)

Dust Mountain Prospect

Occurrence in Alaska, United States with commodities Chromium, Nickel, Platinum
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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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10000840
MRDS ID A011493
Record type Site
Current site name Dust Mountain Prospect
Related records 10183452

Geographic coordinates

Geographic coordinates: -144.94144, 61.60131 (WGS84)
Location accuracy 2000(meters)

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Valdez C-3(quadrangle 1:63,360 scale)

Valdez NE(quadrangle 1:100,000 scale)

Valdez(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Copper River(hydrologic unit)

Copper River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Ahtna, Incorporated(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • LOCATION APPROXIMATED FROM USGS OFR 80-892B, LOC. 43A

Commodities

Commodity Importance
Chromium Critical Primary
Nickel Critical Tertiary
Platinum Critical Tertiary

Comments on the commodity information

  • TRACE NI AND PT PRESENT

Materials information

Materials Type of material
Chromite Ore

Analytical data

Result RICHEST MATERIAL ASSAYED 36% TO 57.7% CHROMITE, CR: FE RATIO OF 1.21 TO 3.06, USGS BULL 1246, P. 52

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
    Stratigraphic age (youngest) Holocene
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite

Nearby scientific data

(1) -144.94144, 61.60131
ListMap

Economic information

Ore body information

  • Thickness 3.05M
    Length 22.86M

Controls for ore emplacement

  • Lithologic

Comments on the geologic information

  • PROSPECT LIES AT NE END OF LARGE DUNITE SILL THAT CROPS OUT DISCONTINUOUSLY OVER AN AREA 12 MI LONG BY 1.5 MI WIDE; APPROXIMATELY PARALLELTO BERNARD MT. FAULT TO THE S, WHICH TRENDS ROUGHLY N 85 E; SILL INTRUDES ROCKS CORRELATIVE WITH MISS TO PERM STRELNA FORMATION

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Tonsina/Bernard Mountain

Comments on development

  • APPARENT POST 1950 ACTIVITY

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SEE ALSO: BERNARD MT. PROSPECT ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit SEGREGATION OF CHROMITE IN DUNITE UP TO 10 FT THICK EXPOSED FOR 75FT; TRACE NI AND PT; ALSO DISSEMINATED CHROMITE IN DUNITE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 30-MAY-1995 Waller, Nichelle (Mosier, Dan) U.S. Geological Survey PARSED DATA INTO WORKINGS AND ORE BODY MULTIVALUED FIELDS

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.