Greenstone Mine

Past Producer in Beaverhead county in Montana, United States with commodities Copper, Silver, Gold, Tungsten
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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10102054
MRDS ID DC11917
Record type Site
Current site name Greenstone Mine

Geographic coordinates

Geographic coordinates: -112.80339, 45.41296 (WGS84)
Elevation 2168
Relative position 15.5 AIR MILES NW OF DILLON

Site location context

Political divisions (FIPS codes)

Beaverhead(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Twin Adams Mountain(quadrangle 1:24,000 scale)

Dillon(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Hole(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Beaverhead-Deerlodge 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 Beaverhead

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 005S 010W 11 Montana

Comments on the location information

  • NW 1/4, SE 1/4, SECT. 11

Commodities

Commodity Importance
Copper Primary
Silver Primary
Gold Secondary
Tungsten Critical Secondary

Materials information

Materials Type of material
Powellite Ore
Scheelite Ore
Calcite Gangue
Epidote Gangue
Garnet Gangue
Quartz Gangue
Talc Gangue

Alteration

  • (Local) Gouge, Oxidation

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Pioneer Batholith
    Rock description Pioneer Batholith
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Amsden
    Rock description Amsden

Nearby scientific data

(1) -112.80339, 45.41296

Economic information

Geologic structures

Type of structure Local
Structure description Humbolt Mtn. Anticline-East Flank, Pioneer Batholith

Ore body information

  • Strike N 10 E
    Dip 40 E
    Length 243.84M
    Width 42.67M
    Depth to top 0M

Controls for ore emplacement

  • Tactite Zone, Shear Zone

Comments on the geologic information

  • SCHEELITE CRYSTALS ARE UP TO 8.3 MM LONG. ; GEOL.DESC: OXIDIZED CU ORE ALSO PRESENT

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Birch Creek (Utopia) District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner C. Kennedy
    Home office Dillon
    First year 1972
  • Type Owner
    Owner G. W. Farlin
    First year 1972

Production statistics

  • Year 1950
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^1.2% Wo3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    WO3 Ore Tungsten Tungsten 1wt-pct

Workings at the site

  • Type of workings Surface/Underground
    Length 152.4M
    Overall depth 73.15M

Comments on the workings information

  • EARLY WORKINGS CONSIST OF A 240-FOOT SHAFT WITH 176 FEET OF DRIFTING AND 2 ADITS. 1951 TUNGSTEN EXPLORATION INVOLVED EXCAVATING 13 BULLDOZER CUTS

Comments on development

  • EARLY MINING WAS FOR COPPER. IN 1950 MINERALS EXPLORATION CO. BUILT AN ACCESS ROAD FROM WILLOW CR FOR TUNGSTEN EXPLORATION.

Reference information

Bibliographic references

  • Deposit

    USGS BULL 574, P. 63.

  • Deposit

    USBM RI 5552, P. 19-22.

  • Deposit

    MBMG BULL 85, P. 89-91.

  • Deposit

    1914 RECON WINCHELL, A.N., U.S.G.S. BULL 574

  • Deposit

    1960 RECON U.S. BUREAU OF MINES, R.I. 5552

  • Deposit

    1972 COMPILE M.B.M.G. BULL. 82

General comments

Subject category Comment text
Deposit TACTITE EXPOSED 480 FEET SOUTH OF GREENSTONE GULCH AND 340 FEET TO THE NORTH. WIDTH ALONG DIP VARIES FROM 25 TO 180 FEET AND AVERAGES 140 FEET. MINERALIZED NW TO NE TRENDING SHEAR ZONES

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-JUL-1980 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey

Beyond USGS

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

External references