Free Speech Mine

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

Name: Free Speech Mine  

State:  Montana

County:  Lewis and Clark

Elevation:

Primary Mineral: Lead, Silver

Lat, Long: 46.47417, -112.24167

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 Free Speech Mine

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.