1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Bertha Mine

Past Producer in Silver Bow county in Montana, United States with commodities Copper, Silver
Map
XML
JSON
KML
B
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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10014483
MRDS ID D011280
Record type Site
Current site name Bertha Mine

Geographic coordinates

Geographic coordinates: -112.48145, 46.00823 (WGS84)
Location accuracy 500(meters)
Relative position ABOUT 1.0 KM W OF COLUMBIA GARDEN.

Site location context

Political divisions (FIPS codes)

Silver Bow(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Elk Park Pass(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 007W 16 Montana

Comments on the location information

  • ON THE FOOT SLOPES OF EAST RIDGE, NORTH OF THE CANYON LEADING TO COLUMBIA GARDEN

Commodities

Commodity Importance
Copper Primary
Silver Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Chrysocolla Ore
Cuprite Ore
Malachite Ore
Tenorite Ore
Quartz Gangue

Analytical data

Result WALL ROCK CARRIES 1-2% CU. ORE CARRIES 2-5.2% CU

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) Granitic rock
ListMap

Economic information

Ore body information

  • Thickness 36.58M
    Length 42.67M
    Width 6.1M

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

Comments on the production information

  • PRODUCED CU ORE IN THE EARLY 1900'S-1800 TONS CU ORE. PRODUCED IN 1952, 1954

Comments on the workings information

  • TUNNEL, 50 FT WINZE, 45 FT N AND 115 FT S DRIFTS (1905)

Reference information

Bibliographic references

  • Deposit

    USGS PP 74, P. 235, PL. X.

  • Deposit

    USGS-USBM MINERAL YEARBOOK 1952, 1954.

  • Production

    USGS PP 74, P. 235;

General comments

Subject category Comment text
Deposit THE ORE BODY LIES IN A FAULT. IT INCLUDES 20-25 FT OF GRANITE, CUT BY VEINLETS OF COPPER SILICATES, OXIDES, AND CARBONATES, INCLOSED BETWEEN WELL-DEFINED WALLS. 2 E-W VEINS ALSO OUTCROP. ONE 200 FT BELOW THE SURFACE, 6 IN TO 3 FT WIDE, WITH A NARROW STRINGER OF ORE RUNNING 6-30% CU.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1984 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