Baltimore Mine

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

Name: Baltimore Mine  

State:  Montana

County:  Jefferson

Elevation: 6,001 Feet (1,829 Meters)

Primary Mineral: 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.


Satelite image of the Baltimore Mine

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.


Colorized Mining Photos

Drumlummon Mine at Marysville, Montana late 1880s

Western Mining History's collection of colorized mining photos includes incredible scenes from Montana: Best Historical Photos: Colorized Mining Scenes.