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  3. Mineral Resource Data System (MRDS)

Mono Group

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

Geologic information

Identification information

Deposit ID 10101942
MRDS ID DB02212
Record type Site
Current site name Mono Group
Alternate or previous names Mono Mine, E Mono Mine

Geographic coordinates

Geographic coordinates: -112.10449, 46.29934 (WGS84)
Location accuracy 500(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 03,04 Montana

Comments on the location information

  • GROUP EXTENDS FOR 2 MILES TO THE NE.

Commodities

Commodity Importance
Lead Primary
Silver 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
Siderite Gangue

Alteration

  • (Local) Sericitization, Some Oxididation

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) -112.10449, 46.29934
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith
Type of structure Local
Structure description Comet-Gray Eagle Shear Zone

Controls for ore emplacement

  • Comet-Gray Eagle Shear Zone

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

Reference information

Bibliographic references

  • Deposit

    USGS PP 428, P. 88-89

  • Production

    MBMG BULL 16, P. 98.

General comments

Subject category Comment text
Deposit TREND CHANGES TO N65E AS SHEAR ZONE TRENDS ACROSS SECTION 4 AND INTO SECTION 3. 4 PARALLEL VEINS, MINING ON NORTHERN-MOST VEIN.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1980 Elliott, James E. U.S. Geological Survey
Updater 01-OCT-1981 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.

Maps centered on this site