Janet 50

Occurrence in Sweet Grass county in Montana, United States with commodities Copper, Nickel, Platinum, Palladium, Lead, Zinc, Gold, Arsenic
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Nearby scientific data
  8. Geologic structures
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10048506
MRDS ID MP00096
Record type Site
Current site name Janet 50

Geographic coordinates

Geographic coordinates: -110.04941, 45.41742 (WGS84)
Elevation 2804
Relative position ABOUT 0.6 MI SOUTH OF SOUTH PICKET PIN LAKE

Site location context

Political divisions (FIPS codes)

Sweet Grass(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Picket Pin Mountain(quadrangle 1:24,000 scale)

Gardiner(quadrangle 1:100,000 scale)

Bozeman(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Stillwater(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

Comments on the location information

  • UNSURVEYED. IN CUSTER NATIONAL FOREST

Commodities

Commodity Importance
Copper Primary
Nickel Critical Primary
Platinum Critical Primary
Palladium Critical Primary
Lead Primary
Zinc Critical Primary
Gold Primary
Arsenic Critical Primary

Comments on the commodity information

  • MUCH OF PGM ARE AS INCLUSIONS IN PYRRHOTITE. PD ALSO FOUND IN SOLID SOLUTION WITH PENTLANDITE

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Graphite Ore
Magnetite Ore
Pentlandite Ore
Pyrite Ore
Pyrrhotite Ore
Sperrylite Ore
Sphalerite Ore

Analytical data

Result AVERAGE GRADE 0.24% NI+CU, 2.7 PPM PT+PD, PT:PD=1-2. 692 PPB PT, 1.278 PPM PD AVG., SURFACE SAMPLES

Nearby scientific data

(1) -110.04941, 45.41742

Economic information

Geologic structures

Type of structure Regional
Structure description The Stillwater Complex Is Exposed Along The Northern Margin Of The Beartooth Uplift, One Of Several Laramide Basement-Cored Ranges That Make Up The Rocky Mountain Foreland Of South-Central Montana (Foose And Others, 1961: Kulik And Schmidt, 1988)

Ore body information

  • General form UNKNOWN
    Length 150M
    Width 30M

Comments on the geologic information

  • AGE OF STILLWATER COMPLEX IS 2,705 +/- 4 MA BASED ON U-PB SYSTEMATICS ON ZIRCON-BADDELEYITE (PREMO AND OTHERS, 1990)

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1967
Discoverer Johns-Manville

Mining district

District name In Stillwater Complex

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Johns-Manville Products Corp.
    First year 1977

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GRAPHITE IN AREA GENERATED A LARGE IP ANOMALY. DIMENSIONS GIVEN ARE SURFACE EXPOSURE OF MINERALIZED AREA; UNPUBLISHED MODEL NAME: DISCORDANT PGE MINERALIZATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1991 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.