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  3. Mineral Resource Data System (MRDS)

Big Jack Lode

Prospect in Broadwater county in Montana, United States with commodities Silver, Gold, Lead
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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. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10022790
MRDS ID FS00266
Record type Site
Current site name Big Jack Lode

Geographic coordinates

Geographic coordinates: -111.70309, 46.3774 (WGS84)
Elevation 2243
Relative position FIFTEEN MILES W, NW OF TOWNSEND, MONTANA

Site location context

Political divisions (FIPS codes)

Broadwater(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Winston(quadrangle 1:24,000 scale)

Townsend(quadrangle 1:100,000 scale)

White Sulphur Springs(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Missouri(hydrologic unit)

Upper Missouri(hydrologic accounting unit)

Missouri-Marias(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Helena-Lewis and Clark 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 Broadwater

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 007N 001W 10,11,14 Montana

Commodities

Commodity Importance
Silver Primary
Gold Tertiary
Lead Tertiary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore

Alteration

  • (Local) Contact Metamorphism

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Boulder Batholith, Granite
    Rock description Boulder Batholith, Granite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -111.70309, 46.3774
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Mining district

District name Winston (Beaver Creek)

Ownership information

  • Type Owner-Operator
    Owner Dance, Al

Comments on the workings information

  • SHAFT AND TUNNEL ARE CAVED IN, DEBRIS IN TRENCH AND PITS (2).

Reference information

Bibliographic references

  • Deposit

    1950 DIREXPL USFS

General comments

Subject category Comment text
Deposit OLDER LIMESTONE IS FOLDED AND OVERLAIN BY ANDESITE PORPHORY. BOTH SEDIMENTARY AND VOLCANIC ROCKS ARE HIGHLY METAMORPHOSED WHERE INTRUDED BY IGNEOUS ROCK.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1976 Steward, Candis 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