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  3. Mineral Resource Data System (MRDS)

Hurst Mountain Occurence.

Occurrence in Alaska, United States with commodities Chromium, 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. Alteration
  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 10002582
MRDS ID A015019
Record type Site
Current site name Hurst Mountain Occurence.
Related records 10137165

Geographic coordinates

Geographic coordinates: -156.93855, 63.23193 (WGS84)
Relative position 13 MILES WNW OF OPHIR

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ophir A-2(quadrangle 1:63,360 scale)

Ophir SE(quadrangle 1:100,000 scale)

Ophir(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USBM-OFR 84-22, LOC. 10, FIG. 13. 1 MILE NE OF MOUNT HURST SUMMIT. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Chromium Critical Primary
Platinum Critical Primary

Materials information

Materials Type of material
Chromite Ore
Platinum Ore
Spinel Gangue

Alteration

  • (Local) Dunite Weathers To Light Tan Color.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite

Nearby scientific data

(1) -156.93855, 63.23193
ListMap

Economic information

Comments on the geologic information

  • THE CHROMITE BAND IS EXPOSED ON THE WEST SIDE OF A STEEPLY ERODED WEHRLITE OUTCROP THAT FORMS A RESISTANT SPINE DOWN THE NE SPUR OF MT. HURST.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1981
Discoverer William S. Roberts

Mining district

District name Ophir

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit BANDED PLATINUM BEARING CHROMITE OCCURS IN A LIGHT ORANGE-BROWN DUNITE LENS HOSTED BY WELL LAYERED LIGHT-GREEN WEHRLITE. DEPOSIT DISCONTINUOUS, OUTCROP PINCHES AND SWELLS.
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1987 Powers, M.T. (Huber, D.F.) 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.