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  3. Mineral Resource Data System (MRDS)

St. Lawrence Mine

Occurrence in Mineral county in Montana, United States with commodity Copper
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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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10094774
MRDS ID DC08394
Record type Site
Current site name St. Lawrence Mine

Geographic coordinates

Geographic coordinates: -115.56768, 47.35626 (WGS84)
Elevation 1707
Relative position 4 1/2 MI S OF SALTESE, MONT.

Site location context

Political divisions (FIPS codes)

Mineral(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Adair(quadrangle 1:24,000 scale)

Wallace(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 018N;019N 031W;031W 05;32 NW OF NE Montana

Comments on the location information

  • S AND ABOVE SILVER LAKE. 1/4 MI N OF IDAHO - MONTANA BORDER.

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Dolomite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock
    Rock unit name Wallace Formation
    Rock description Wallace Formation

Nearby scientific data

(1) -115.56768, 47.35626
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Large Scale Nw Trending Dioritic Sill (Wishards). Deposits In Vicinity Are Typically Chalcopyrite - Dolomite Veins Filling Steeply - Dipping, Eastward-Trending Fractures.

Ore body information

  • General form POD/LENS
    Strike N 70 DEG E
    Dip VERTICAL

Controls for ore emplacement

  • Fractures

Comments on the geologic information

  • HOST BEDS DIP GENTLY SW ALTHOUGH THERE IS WITHIN THE AREA A SPATIAL RELATIONSHIP BETWEEN COPPER BEARING VEINS AND THE WILSHARDS SILL, NO OTHER EVIDENCE EXISTS WHICH SUGGESTS A DIRECT GENETIC CONNECTION BETWEEN THE TWO.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name (Unorganized)

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Underground
    Length 365.76M

Comments on the workings information

  • WORKINGS CONSIST OF TWO PARTLY ACCESSIBLE LEVELS. SEVERAL RAISES AND STOPES HAVE BEEN MADE.

Reference information

Bibliographic references

  • Deposit

    WALLACE, R. E. AND HOSTERMAN, J. W., 1956 , RECONNAISSANCE GEOLOGY OF WESTERN MINERAL COUNTY, MONTANA: US GEOLOGICAL SURVEY BULL. 1027-M, P. 607 .

  • Deposit

    CONSV. DIV. COMP. DATE, 02-15-1963

General comments

Subject category Comment text
Deposit DEPOSIT OCCURS AS PODS ALONG VERTICAL FRACTURES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-MAY-1979 Rojstaczer, Stuart 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