Broadway Mine

Past Producer in Madison county in Montana, United States with commodities Gold, Silver, Copper, Lead, Zinc
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. Land status
  17. Ownership information
  18. Production statistics
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10102030
MRDS ID DC11364
Record type Site
Current site name Broadway Mine
Alternate or previous names Victoria Mine

Geographic coordinates

Geographic coordinates: -112.31476, 45.69629 (WGS84)
Elevation 1615
Relative position 1.75 MILES NW OF SILVER STAR.

Site location context

Political divisions (FIPS codes)

Madison(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Silver Star(quadrangle 1:24,000 scale)

Butte South(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Jefferson(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Madison

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 002S 006W 02 NW OF NW Montana

Commodities

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

Materials information

Materials Type of material
Cuprite Ore
Malachite Ore
Calcite Gangue
Epidote Gangue
Garnet Gangue
Jasper Gangue
Limonite Gangue
Pyrolusite Gangue
Serpentine Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result SHIPPING ORE LOTS AVERAGED 1.7 OZ. AU/TON, 1.15 OZ. AG/TON. MILLING ORE WAS LOWER GRADE

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Butte Quartz Monzonite
    Rock description Butte Quartz Monzonite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Limestone
    Rock description Limestone

Nearby scientific data

(1) -112.31476, 45.69629

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith

Ore body information

  • General form IRREGULAR SHOOTS ALONG CONTACT
    Strike N 70 W
    Dip 30 SW
    Width 60.96M

Controls for ore emplacement

  • Contact Zone-Limestone/Quartz Monzonite

Comments on the geologic information

  • GEOL.DESC: OXIDIZED ORE SHOOTS

Economic information about the deposit and operations

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

Mining district

District name Silver Star District

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Victoria Mines, Inc.
    Home office Salt Lake City, Ut.
    First year 1950

Production statistics

  • Year 1880
    Period Prior To 1880
    Material ORE
    Accuracy Accurate
    Description Cp_Grade: ^1.1 Oz. Au/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 31g/mt

Comments on the production information

  • TOTAL TO 1934: $1,050,000.

Workings at the site

  • Type of workings Surface/Underground
    Length 609.6M
    Overall depth 198.12M

Comments on the workings information

  • TWO SHAFTS, 400 AND 550 FT. DEEP, WITH LEVELS AT 75 175, 300, 350 AND 450 FEET. A 1100-FT CROSSCUT CONNECTED WITH THE 300-FT. LEVEL. A WINZE FROM THE 450-FT. LEVEL ATTAINED 650 FT. OPEN PIT (1949)

Comments on development

  • 20-STAMP MILL AND CYANIDATION PLANT BUILT 1900, MILL BURNED DOWN AROUND 1903. ; ECON.COM: 100-120 TONS/ORE PER DAY WERE MILLED FOR CONCENTRATES IN 1949

Reference information

Bibliographic references

  • Deposit

    USGS BULL 574, P. 142-144.

  • Deposit

    GILBERT, F.C., 1935, DIRECTORY OF MINING PROPERTIES; MT. BUREAU OF MINES AND GEOL., MEM. 15, P. 48.

  • Deposit

    REYNER, M.L., 1950, DIRECTORY OF MINING PROPERTIES-1949: MT. BUREAU OF MINES AND GEOL., MEMOIR 31, P. 73.

  • Deposit

    MBMG MEM 19, P. 49.

  • Deposit

    1914 RECON WINCHELL, A.N., U.S.G.S. BULL. 574

  • Deposit

    1950 GEOLMAP MBMG MEMOIR 19

  • Production

    MBMG MEMOIR 19

General comments

Subject category Comment text
Deposit MAIN ORE SHOOT DIPS 30 SW FOR FIRST 500-FT, THEN 65SW FOR NEXT 150-FT. WIDTH RANGES FROM A FEW FEET TO 200 OR MORE. SMALLER SHOOTS EXTEND INTO GRANITE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-JUN-1980 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.