The Baltimore Mine is a lead, gold, silver, and zinc mine located in Jefferson county, Montana at an elevation of 6,001 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
Elevation: 6,001 Feet (1,829 Meters)
Commodity: Lead, Gold, Silver, Zinc
Lat, Long: 46.28694, -112.14972
Map: View on Google Maps
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.
Baltimore Mine MRDS details
Site Name
Primary: Baltimore Mine
Commodity
Primary: Lead
Primary: Gold
Primary: Silver
Primary: Zinc
Secondary: Copper
Tertiary: Arsenic
Location
State: Montana
County: Jefferson
District: Boulder District
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Year: 1953
Time Period: 1903-1953
Description: Cp_Grade: ^0.59%
Year: 1953
Time Period: 1903-1953
Description: Cp_Grade: ^12 Oz/Ton
Year: 1953
Time Period: 1903-1953
Description: Cp_Grade: ^.076 Oz/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1885
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Boulder Batholith
Type: L
Description: Five Main Fault Zones, Four Trend Ne, The Other Trends N 70 W
Alterations
Not available
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Gold
Ore: Sphalerite
Ore: Chalcocite
Ore: Chalcopyrite
Ore: Galena
Gangue: Pyrite
Gangue: Quartz
Comments
Comment (Reserve-Resource): POSSIBLE THAT CONSIDERABLE ORE LEFT IN DEPOSIT DUE TO ORE BODY BEING IRREGULAR AND INCOMPLETE EXTRACTION OF EXISTING ORE.
Comment (Deposit): 3 VEINS MERGE AT ONE PLACE TO FORM VEIN 45 FT. WIDE. HORSE TAIL PATTERN OF VEINS TO NORTH AND NORTHEAST.
Comment (Workings): SHALLOW SHAFT, 8 LEVELS, SEVERAL SHORT ADITS, STOPES. (FOR MINE MAP SEE BECRAFT, G. E., 1963, U.S.G.S. PROF. PAPER 428, PL. 18.
Comment (Location): E SIDE OF BOOMERANG GULCH.
Comment (Deposit): Discovery Year: 1880'S
Comment (Production): FROM 1903-53 PRODUCTION EXCEPT 12 YRS. MINE WAS IDLE FROM 1946-1950
References
Reference (Reserve-Resource): BECRAFT AND OTHERS, 1963, U.S.G.S. PROF. PAPER 428, 98 P.
Reference (Production): MBMG BULL 16, USGS PP 428
Reference (Deposit): USGS PP 428, P. 38, 54, 92.
Reference (Deposit): USGS BULL 842, P. 292.
Reference (Deposit): MBMG BULL 16, P. 38-9.
Reference (Deposit): USGS BULL 527, P. 120-1.
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.
