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Little Pittsburg Mine

Past Producer in Mineral county in Montana, United States with commodities Silver, Copper, Lead, Antimony, Gold
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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 10078294
MRDS ID W026559
Record type Site
Current site name Little Pittsburg Mine

Geographic coordinates

Geographic coordinates: -114.98599, 47.2696 (WGS84)
Elevation 1067
Relative position 7 MI NW OF SUPERIOR

Site location context

Political divisions (FIPS codes)

Mineral(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Keystone Peak(quadrangle 1:24,000 scale)

Plains(quadrangle 1:100,000 scale)

Wallace(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Clark Fork(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Lolo 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 Mineral

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 017N;018N 027W;027W 01;36 NE OF NW OF NW Montana

Commodities

Commodity Importance
Silver Primary
Copper Primary
Lead Secondary
Antimony Critical Tertiary
Gold Tertiary

Comments on the commodity information

  • NO GALENA OBSERVED, SO THAT HIGH AMOUNT OF LEAD RECOVERED SEEMED ANOMALOUS, SUSPECTED THAT "STIBNITE" WAS IN FACT BOULANGERITE.

Materials information

Materials Type of material
Chalcopyrite Ore
Limonite Gangue
Pyrite Gangue
Quartz Gangue
Siderite Unknown

Alteration

  • (Local) Dolomitization Of St. Regis Fm, Burke Fm, And Revett Fm

Analytical data

Result 11 OZ/TON AG, 10% PB, 0.5% CU, 0.2% SB

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Phyllite
    Rock unit name St. Regis Formation;Burke Formation;Revett Formation
    Rock description St. Regis Formation;Burke Formation;Revett Formation
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -114.98599, 47.2696
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Osburn Fault Zone Short Distance North Of Mine
Type of structure Local
Structure description Overturned Flank Of Little Pittsburg Syncline

Ore body information

  • General form IRREGULAR , TABULAR
    Length 21.34M
    Width 2.29M

Controls for ore emplacement

  • Shear Zones In Country Rock

Comments on the geologic information

  • NO GALENA OBSERVED, SO THAT HIGH AMOUNT OF LEAD RECOVERED SEEMED ANOMALOUS, SUSPECTED THAT "STIBNITE" WAS IN FACT BOULANGERITE (CAMPBELL, 1960).

Economic information about the deposit and operations

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

Mining district

District name Keystone District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Pittsburg Silver Mining Co.
  • Type Owner
    Owner W. Schneider

Comments on the production information

  • NO RECORD OF ANTIMONY CONTENT OF ORE. NO PRODUCTION RECORDED IN YEARS OTHER THAN THOSE LISTED ABOVE

Workings at the site

  • Type of workings Underground
    Length 2133.6M
    Overall depth 365.76M

Comments on the workings information

  • EXTENT OF UNDERGROUND WORKINGS ESTIMATED FROM MINE MAP NOT ALL ARE ACCESSABLE. 2 LEVELS EXIST. DEVELOPED BY KEESEY TUNNEL, LITTLE PITTSBURG TUNNEL(CAVED), WREN TUNNEL(CAVED) OLD SHAFT(CAVED).

Reference information

Bibliographic references

  • Deposit

    CAMPBELL, A. B., 1960 , GEOLOGY AND MINERAL DEPOSITS OF THE ST. REGIS - SUPERIOR AREA MINERAL COUNTY, MONTANA, U. S. GEOLOGICAL SURVEY BULLETIN 1082 - I P. 599 - 60

  • Deposit

    1951 OTHER DMEA PARTLY FINANCED REHABILITATION OF LAST 750 FT OF KEESEY TUNNEL FOR STUDY OF AN AREA THOUGHT TO CONTAIN SIGNIFICANT ORE.

  • Deposit

    1951 RECON R. E. WALLACE AND J. W. HOSTERMAN

  • Production

    CAMPBELL, A. B., 1960 , GEOL. AND MIN. DEPOSITS OF THE ST. REGIS, SUPERIOR AREA, MINERAL CO., MONT.

General comments

Subject category Comment text
Deposit ORE VEINS STRIKE WNW-NO DIP AVAILABLE, STRIKE NE-DIP80 DEG NW ON N END-85 DEG SE ON S END, STRIKE WNW-DIP 30 DEG N

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1977 Mc Kenzie, Craig L.; R. B. Berg U.S. Geological Survey

Beyond USGS

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

External references

Maps centered on this site