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Emma Mine

Past Producer in Silver Bow county in Montana, United States with commodities Manganese, Zinc, Lead, Silver, Gold
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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. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10019641
MRDS ID DC11028
Record type Site
Current site name Emma Mine
Alternate or previous names Ancient, Black Chief
Related records 10124769

Geographic coordinates

Geographic coordinates: -112.54172, 46.00601 (WGS84)
Location accuracy 250(meters)
Relative position 1.8 KM SE OF BIG BUTTE.

Site location context

Political divisions (FIPS codes)

Silver Bow(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Butte North(quadrangle 1:24,000 scale)

Butte North(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Clark Fork(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Montana Silver Bow

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 003N 008W 13 Montana

Comments on the location information

  • E SIDE OF MISSOULA GULCH.

Commodities

Commodity Importance
Manganese Critical Primary
Zinc Critical Primary
Lead Primary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Rhodochrosite Ore
Quartz Gangue

Analytical data

Result IN 1922 HIGH GRADE ZN ORE: 21% ZN, 38 OZ/TON AG, 8% PB ON THE 1000 FT LEVEL. MN ORE BODIES OF 41% WAS FOUND.

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) -112.54172, 46.00601
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith

Ore body information

  • Dip S
    Width 15.24M

Economic information about the deposit and operations

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

Mining district

District name Butte District

Ownership information

  • Type Owner-Operator
    Owner The Anaconda Co.
    Home office Hennessy Bldg., Butte, Mt.

Comments on the production information

  • MN WAS PRODUCED DURING 1934-1957.

Comments on the workings information

  • 1916 THE SHAFT WAS DEWATERED TO THE 800 FT LEVEL. THE ORE BODY AT THAT LEVEL WAS GOOD IN VALUES OF ZN-PB-AG. A SHAFT WAS SUNK ON THE 800 FT LEVEL. A CROSSCUT WAS EXTENDED ON THE 1600 FT LEVEL OF THE ORIGINAL MINE. IN 1920 A 1763 FT CROSSCUT WAS BEING EXTENDED TOWARDS THE OPHIR MINE. 1926 MAIN SHAFT WAS TO THE 1200 FT LEVEL. 1942 1263 FT IN SHAFTS WERE ADDED AND 26459 FT OF DRIFTS. 1943 ANOTHER 25962 FT IN SHAFTS WERE ADDED AND 23095 FT OF DRIFTS.

Comments on development

  • IN 1920 THE OPHIR MINE WAS BOUGHT TO WORK WITH THE EMMA. 1924 THE CZARROMAH CLAIM WAS BOUGHT. ALSO THE MARY LOUISEAND RAILROAD CLAIMS WERE ALSO OPTAINED.

Reference information

Bibliographic references

  • Deposit

    USGS PP 74, P. 255-56

  • Deposit

    USGS FILES

  • Deposit

    MBMG BULL 14, P. 39.

  • Deposit

    USGS-USBM MINERAL YEARBOOKS 1916-1958.

  • Production

    USGS FILESUSGS-USBM MINERAL YEARBOOKS 1916-1958.

General comments

Subject category Comment text
Deposit VEIN CROSSES S WASHINGTON ST. IT ENDS IN A HIGH KNOBWHICH OVER LOOKS MISSOULA GULCH. A SMALLER OUTCROP IS BEYOND GULCH.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-74 Unknown U.S. Geological Survey
Updater 01-DEC-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