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Mono Mine

Past Producer in Jefferson county in Montana, United States with commodities Silver, Lead, Gold, Copper, Zinc, Antimony
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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. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10012369
MRDS ID D007970
Record type Site
Current site name Mono Mine
Alternate or previous names Part of Mono Group

Geographic coordinates

Geographic coordinates: -112.10366, 46.2999 (WGS84)
Elevation 1585
Location accuracy 250(meters)
Relative position 2.1 KM S OF AMAZON.

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Wickes(quadrangle 1:24,000 scale)

Butte North(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Boulder(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 006N 004W 04 E2 Montana

Commodities

Commodity Importance
Silver Primary
Lead Primary
Gold Secondary
Copper Secondary
Zinc Critical Secondary
Antimony Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Sphalerite Ore
Tetrahedrite Ore
Pyrite Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Sericitization

Analytical data

Result 0.36 OZ/TON AU; 17.1 OZ/TON AG; 13.8 % PB; 0.9 % CU; 10.2% ZN; 0.2 % MN. SIEVE ANALYSIS: BEFORE CRUSHING: 3:"2, 1:"18; AFTER 1:"100; 1/2:"53; 4:23; 8:20,50:16; 200:8.2; LIQUID LIMIT: 21.2; PLASTICITY INDEX: NP; SWELL: .010

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Butte Quartz Monzonite (Boulder Batholith)
    Rock description Butte Quartz Monzonite (Boulder Batholith)
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite

Nearby scientific data

(1) -112.10366, 46.2999
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith

Ore body information

  • Length 3218.6M

Controls for ore emplacement

  • Comet-Gray Eagle Shear Zone

Comments on the geologic information

  • E EXTENTION OF COMET-GREY EAGLE VEIN.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Amazon District

Comments on the workings information

  • 3 CAVED SHAFTS, 4 SHORT ADITS WITH LARGE DUMPS AT EACH. MOST OF THE MINING HAS BEEN DONE ON THE NORTHERN MOST OF 4 PARALLEL VEINS.

Reference information

Bibliographic references

  • Deposit

    USGS PP 428, P. 88.

  • Deposit

    MBMG BULL 16, P. 98.

General comments

Subject category Comment text
Deposit VEINLETS OF CARBONATE MINERALS AND SOME OF THE QUARTZ CUT AND REPLACE GALENA AND SPHALERITE. MANY OF THE CARBONATE VEINLETS CONTAIN FINE-GRAINED PYRITE. MOST OF THE WALLROCK IS INTENSELY ALTERED TO SERICITE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-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.

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