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Piegan-Gloster Mine

Past Producer in Lewis and Clark county in Montana, United States with commodities Gold, Silver, 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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Production statistics
  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 10015845
MRDS ID DB02102
Record type Site
Current site name Piegan-Gloster Mine

Geographic coordinates

Geographic coordinates: -112.34172, 46.76184 (WGS84)
Location accuracy 250(meters)
Relative position THREE MILES NW OF MARYSVILLE

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Canyon Creek(quadrangle 1:24,000 scale)

Elliston(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Missouri(hydrologic unit)

Upper Missouri(hydrologic accounting unit)

Missouri-Marias(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Lewis and Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 012N 006W 27 Montana

Comments on the location information

  • NEAR THE HEAD OF PIEGAN GULCH.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Secondary

Materials information

Materials Type of material
Gold Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Marysville Stock
    Rock description Marysville Stock
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -112.34172, 46.76184
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith
Type of structure Local
Structure description Marysville Stock

Ore body information

  • Strike N 25 E
    Dip 60E
    Length 243.84M
    Width 3.66M
    Depth to bottom 182.88M

Comments on the geologic information

  • POST MINERAL MOVEMENT

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes

Mining district

District name Marysville District

Production statistics

  • Year 1942
    Period 1906-1942
    Material ore
    Ore mined 288000mt
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major AG Silver Silver 9978680.98g
    Major AU Gold Gold 4882655.55g
    Minor CU Copper Copper 854.11mt

Workings at the site

  • Type of workings Underground
    Length 365.76M
    Overall depth 228.6M

Comments on the workings information

  • PIEGAN MINE HAD A TUNNEL WITH A WINZE 750 FT FROM THE PORTAL AND WAS SUNK TO A DEPTH OF 750 FT. GLOUSTER HAS A 1200 FT TUNNEL.

Reference information

Comments on the other database information

  • RECORD NUMBER 719 IS A POTENTIAL DUPLICATE OF THIS RECORD

Bibliographic references

General comments

Subject category Comment text
Deposit AT THE FACE OF TUNNEL THE VEIN NARROWS TO 1FT OF MASSIVE QUARTZ CONTAING SMALL STREAKS OF PYRITE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-79 Elliott, James E. U.S. Geological Survey
Updater 01-NOV-81 Wise, Kristine K. (Elliott, James E.) 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