1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Dark Horse

Prospect in Sweet Grass county in Montana, United States with commodity Chromium
Map
XML
JSON
KML
B
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10022832
MRDS ID FS00324
Record type Site
Current site name Dark Horse

Geographic coordinates

Geographic coordinates: -110.19997, 45.47492 (WGS84)
Elevation 1753
Relative position 1.5 MILES SSW OF MOUTH OF FALLS CREEK

Site location context

Political divisions (FIPS codes)

Sweet Grass(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chrome Mountain(quadrangle 1:24,000 scale)

Gardiner(quadrangle 1:100,000 scale)

Bozeman(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yellowstone(hydrologic unit)

Upper Yellowstone(hydrologic accounting unit)

Upper Yellowstone(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Custer Gallatin National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Montana Sweet Grass

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 004S 012E 24 Montana

Comments on the location information

  • THIS CLAIM IS PART OF A GROUP

Commodities

Commodity Importance
Chromium Critical Primary

Comments on the commodity information

  • THIS CLAIM SHOWS VERY SMALL SEAMS OF CHROMITE

Materials information

Materials Type of material
Chromite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Pyroxenite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Pyroxenite

Nearby scientific data

(1) -110.19997, 45.47492
ListMap

Economic information

Ore body information

  • General form IRREGULAR

Comments on the geologic information

  • THE PYROXENITE IS A DIKE

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No
Discoverer U.S. Chrome Co.

Mining district

District name Natural Bridge

Ownership information

  • Type Owner
    Owner U.S. Chrome Co.

Workings at the site

  • Type of workings Surface
    Overall length 1.22M
    Overall width 6.1M

Comments on the workings information

  • CUTS IN DETRITAL MATERIAL, EXPOSES SMALL VEINLETS

Reference information

Bibliographic references

  • Deposit

    1925 DIREXPL USFS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1976 Steward, Candis A. 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