Broadway Mine

The Broadway Mine is a gold and silver mine located in Madison county, Montana at an elevation of 5,299 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Broadway Mine
Secondary: Victoria Mine

Commodity

Primary: Gold
Primary: Silver
Secondary: Copper
Secondary: Lead
Secondary: Zinc

Location

State: Montana
County: Madison
District: Silver Star District

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: Victoria Mines, Inc.
Home Office: Salt Lake City, Ut.
Years: 1950 -

Production

Year: 1880
Time Period: Prior To 1880
Material type: ORE
Description: Cp_Grade: ^1.1 Oz. Au/Ton

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Contact Metasomatic
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Highland Mountains

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR SHOOTS ALONG CONTACT

Structure

Type: R
Description: Boulder Batholith

Alterations

Alteration Type: L
Alteration Text: Oxidation

Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cambrian

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian

Analytical Data

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

Materials

Ore: Malachite
Ore: Cuprite
Gangue: Epidote
Gangue: Jasper
Gangue: Garnet
Gangue: Pyrolusite
Gangue: Serpentine
Gangue: Limonite
Gangue: Calcite

Comments

Comment (Production): TOTAL TO 1934: $1,050,000.

Comment (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

Comment (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.

Comment (Workings): 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)

Comment (Geology): GEOL.DESC: OXIDIZED ORE SHOOTS

References

Reference (Production): MBMG MEMOIR 19

Reference (Deposit): USGS BULL 574, P. 142-144.

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

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

Reference (Deposit): MBMG MEM 19, P. 49.

Reference (Deposit): 1914 RECON WINCHELL, A.N., U.S.G.S. BULL. 574

Reference (Deposit): 1950 GEOLMAP MBMG MEMOIR 19

Principal Gold Districts of Montana

In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.