The Lotta Tunnel is a gold mine located in Jefferson county, Montana.
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.
Lotta Tunnel MRDS details
Site Name
Primary: Lotta Tunnel
Secondary: Lotta Mine
Commodity
Primary: Gold
Secondary: Zinc
Secondary: Silver
Location
State: Montana
County: Jefferson
District: Basin (Cataract, Comet) District
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Louis Peura
Home Office: 1124 6th Ave., Helena, Mt.
Production
Year: 1954
Time Period: 1953-1954
Material type: ORE
Description: Cp_Grade: ^0.5 Oz/Ton Au
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1895
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
Alterations
Not available
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Analytical Data: 1958 IN BOTTOM OF NE DRIFT 17 OZ/TON AU.
Materials
Ore: Gold
Gangue: Pyrite
Gangue: Quartz
Comments
Comment (Deposit): 500 FT FROM PORTAL THERE IS A FAULT ZONE 3 TO 15 FT THICK. DRIFTS EXTEND ALONG THIS VEIN FOR 120 FT.
Comment (Location): N SIDE OF U.S. HIGHWAY 91.
Comment (Production): $75000 FREE MILLING AU, (1880'S)
Comment (Development): STARTED AS A HAULAGE AND EXPLORATION ADIT TO CROSSCUT A SERIES OF NE TRENDING FAULT ZONE.
Comment (Workings): ITS ORIGINAL LENGTH WAS 775 FT. IT WAS CAVED UNTIL 1953. IT WAS REOPENED AND 660 FT WAS CLEARED. SAME VEIN ORIGINALLY MINED FROM SURFACE BY SHORT DRIFTS,ADITS, AND STOPES, (1880).
References
Reference (Deposit): USGS BULL 1151, P. 112, PL. 1
Reference (Deposit): MBMG BULL 16, P. 34
Reference (Deposit): MBMG BULL 10, P. 28
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.
