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  3. Mineral Resource Data System (MRDS)

Bald Mountain Prospect

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. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10010251
MRDS ID D003836
Record type Site
Current site name Bald Mountain Prospect

Geographic coordinates

Geographic coordinates: -115.58795, 47.37293 (WGS84)
Elevation 1585
Relative position 3 MI S OF TAFT

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 019N 031W 30 Montana

Comments on the location information

  • AT THE HEAD OF DOMINION CREEK, A SHORT DISTANCE E OF THE IDAHO - MONT. BORDER.

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore

Analytical data

Result AN ASSAYED SPECIMEN CONTAINED 1.5 % CU, 0.02 OZ OF GOLD, AND 1.0 OZ OF SILVER PER TON.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Post Igneous Rocks
    Rock description Post Igneous Rocks
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Wallace Formation
    Rock description Wallace Formation

Nearby scientific data

(1) -115.58795, 47.37293
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Large Scale Nw Trending Sill (Wishards) Which Intersects Adit And Is 350 Ft Thick At Mine Site.
Type of structure Local
Structure description Joints Which Generally Follow Bedding Planes

Ore body information

  • General form SPARSE
    Strike EW
    Dip VERTICAL
    Width 0.91M

Comments on the geologic information

  • COUNTRY ROCK STRIKES N 34 DEG W AND DIPS 55 DEG SW AND IS METAMORPHOSED FOR 200 FT OR MORE ON EITHER SIDE OF THE SILL. ALTHOUGH THERE EXISTS WITHIN THE AREA A SPATIAL RELATIONSHIP BETWEEN COPPER BEARING VEINS AND THE WISHARDS 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 548.64M

Comments on the workings information

  • WORKINGS CONSIST OF ONE ADIT 1500 FT LONG WITH A FEW HUNDRED FEET OF DRIFTS.

Reference information

Bibliographic references

  • Deposit

    CALKINS, F. C. AND JONES, E. L. JR., 1914 , ECONOMIC GEOLOGY OF THE REGION AROUND MULLAN, IDAHO AND, SALTESE, MONTANA: US GEOLOGICAL SURVEY BULL. 540 , P. 197 .

  • Deposit

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

General comments

Subject category Comment text
Deposit VEIN CONTAINS SPARSELY DISSEMINATED CHALCOPYRITE IN A QUARTZ - SIDERITE GANGUE. IT DOES NOT PERSIST FOR A GREAT LENGTH.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1979 Rojstaczer, Stuart A. U.S. Geological Survey

Beyond USGS

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

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