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  3. Mineral Resource Data System (MRDS)

Big Chief Prospect

Past Producer in Madison county in Montana, United States with commodities Mica, Beryllium
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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. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10013233
MRDS ID D009420
Record type Site
Current site name Big Chief Prospect

Geographic coordinates

Geographic coordinates: -112.11337, 45.51768 (WGS84)
Elevation 2347
Location accuracy 250(meters)
Relative position 5 MI NE OF SHERIDAN, Within 500 Ft. Radius, Within 500 Ft. Radius

Site location context

Political divisions (FIPS codes)

Madison(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Noble Peak(quadrangle 1:24,000 scale)

Butte South(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Ruby(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management MT)

Bureau of Land Management MT BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Montana Madison

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 0045 004W 04,05 CENTER OF E2 (05); CENTER OF W2 (04) Montana

Comments on the location information

  • 1,140 FT. ABOVE INDIAN CR. WORKINGS ARE ON STEEP POINT JUTTING OUT 100 FT FROM VALLEY WALL. ; INFO FROM LAND.ST :(1978)

Commodities

Commodity Importance
Mica Primary
Beryllium Critical Tertiary

Materials information

Materials Type of material
Apatite Gangue
Biotite Gangue
Muscovite Gangue
Plagioclase Gangue
Quartz Gangue
Beryl Unknown

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Cherry Creek
    Rock description Cherry Creek
    Stratigraphic age (youngest) Neoarchean
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -112.11337, 45.51768
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description High Angle E And Ne Trending Faults

Ore body information

  • General form PODS, PIPES

Comments on the geologic information

  • BODY AS A WHOLE CONTAINS 2% MICA. SOME AREAS ARE ABOUT 10% MICA. SHEETS RANGE FROM AVERAGE OF 1/4 TO 3 IN DIA. UP TO 4X6 IN.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Year of first production 1943
Year of last production 1944

Mining district

District name Sheridan (Indian Creek) District

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Ivan Winslow
    Home office Sheridan, Wy.
    First year 1944

Comments on the workings information

  • ONE 9X5X7 FT PIT.

Comments on development

  • HIGH QUALITY STRATEGIC GRADE MICA SHIPPED DURING WWZ.

Reference information

Bibliographic references

  • Deposit

    M.B.M.G. MEM. 28, 1949, P. 22-23

General comments

Subject category Comment text
Deposit 5 PEGMATITES, 4 TO 55 FT. LONG AND 3 TO 15 FT. WIDE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-82 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey

Beyond USGS

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

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