Blackshirt Prospect

Occurrence in Deer Lodge county in Montana, United States with commodities Silver, 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. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10069756
MRDS ID W007429
Record type Site
Current site name Blackshirt Prospect

Geographic coordinates

Geographic coordinates: -113.23285, 46.15156 (WGS84)
Elevation 2198
Relative position ABOUT 1.5 KM S OF SILVER LAKE. S ON STORM LAKE RD 1 MI W ON MOUNTAIN RD FOR 1 MI.

Site location context

Political divisions (FIPS codes)

Deer Lodge(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Silver Lake(quadrangle 1:24,000 scale)

Philipsburg(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Clark Fork(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(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 Deer Lodge

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 005N 013W 28 SE OF SW Montana

Comments on the location information

  • NEAR OLD SHAFT ; INFO FROM LAND.ST :(1971)

Commodities

Commodity Importance
Silver Primary
Tungsten Critical Tertiary

Materials information

Materials Type of material
Scheelite Ore

Alteration

  • (Local) Shear Zone

Analytical data

Result 0.65% WO3

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Devonian
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Devonian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Jefferson Limestone
    Rock description Jefferson Limestone

Nearby scientific data

(1) -113.23285, 46.15156

Economic information

Geologic structures

Type of structure Regional
Structure description Philipsburg Batholith
Type of structure Local
Structure description Mine On East Limb Of Syncline, Host Rock Strikes N 40 E Dips 40 W Intrusive Granite Nearby. Cable Stock

Ore body information

  • General form TABULAR
    Strike N 25 E
    Dip 60 NW
    Length 20M
    Width 2M

Controls for ore emplacement

  • Northeast - Trending Syncline, Intrusive Granodiorite

Comments on the geologic information

  • SCHEELITE FOUND SW OF SHAFT, E-W FAULT IN SHAFT

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Silver Lake District

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner J. J. Meloy

Workings at the site

  • Type of workings Surface/Underground
    Length 182.88M
    Overall length 274.32M
    Overall width 10M

Comments on the workings information

  • WORKINGS CONSIST OF FIVE BULLDOZER CUTS AND PARTLY CAVED SHAFT 5 M DEEP SHAFT FROM PREVIOUS AG WORKINGS

Reference information

Bibliographic references

  • Deposit

    USGS PP 78 PL 1.

  • Deposit

    USBM REP INVES 5612, P. 2, 27, 29, 32-33.

  • Deposit

    1906 GEOLMAP EMMONS AND CALKINS

  • Deposit

    1958 GEOLMAP USBM WALKER

General comments

Subject category Comment text
Deposit A FRACTURE ZONE CONTAINING 5-6 FT OF SHEELITE MINERALIZATION. THE ZONE IS CUT OFF BY AN E-W FAULT IN THE SHAFT. SHALLOW BULDOZING NE OF SHAFT FAILED TO FIND ORE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1975 Krohn, Douglas H. U.S. Geological Survey
Updater 01-DEC-1980 Wise, Kristine K. (Elliott, James E.) U.S. Geological Survey

Beyond USGS

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