The Free Speech Mine is a lead and silver mine located in Lewis and Clark 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.
Free Speech Mine MRDS details
Site Name
Primary: Free Speech Mine
Secondary: Free Speech No. 1 Mine
Commodity
Primary: Lead
Primary: Silver
Secondary: Gold
Tertiary: Arsenic
Location
State: Montana
County: Lewis and Clark
District: Rimini District
Land Status
Land ownership: National Forest
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
Not available
Ownership
Owner Name: Thompson, T. L.
Home Office: Box 1435, Anaconda, Mt. 59711
Owner Name: Red Mountain Consolidated Mining Co.
Home Office: St. Paul, Mn. 55100
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
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
Form: PINCH AND SWELL
Structure
Type: R
Description: Boulder Batholith
Type: L
Description: Red Mountain Fault
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: Host Rock
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Gold
Ore: Galena
Gangue: Quartz
Gangue: Pyrite
Comments
Comment (Location): 1.5 KM SSE OF RIMINI. ; INFO FROM LAND.ST :(1950)
Comment (Production): SOME PRODUCTION
Comment (Deposit): THE ORE IS MOSTLY GALENA CONTAINING AU AND AG IN A GANGUE OF COARSE MILKY QUARTZ, ALTERED WALLROCK AND SOME FINE-GRAINED QUARTZ AND CHALCEDONEY.
Comment (Workings): 2 ADITS, SHAFT
Comment (Geology): THIS VEIN APPARENTLY CONTAINS A POD OF ARSENOPYRITE THAT DOES NOT REACH THE LEVEL OF RED MOUNTAIN TUNNEL.
Comment (Deposit): RED MOUNTAIN TUNNEL INTERSECTS THE FREE SPEECH VEIN 2260 FROM ITS PORTAL. ; INFO.SRC : 1 PUB LIT
References
Reference (Deposit): USGS PP 428, P. 56.
Reference (Deposit): MBMG BULL 82, P. 13.
Reference (Production): USGS PP 428.
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.
