Free Enterprise Mine

The Free Enterprise Mine is a silver and uranium mine located in Jefferson county, Montana at an elevation of 5,499 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: Free Enterprise Mine  

State:  Montana

County:  Jefferson

Elevation: 5,499 Feet (1,676 Meters)

Primary Mineral: Silver, Uranium

Lat, Long: 46.25583, -112.14778

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 Enterprise Mine

Free Enterprise Mine MRDS details

Site Name

Primary: Free Enterprise Mine
Secondary: Silver Bell


Commodity

Primary: Silver
Primary: Uranium
Secondary: Lead
Secondary: Copper
Secondary: Zinc
Tertiary: Molybdenum
Tertiary: Barium-Barite
Tertiary: Arsenic
Tertiary: Antimony


Location

State: Montana
County: Jefferson
District: Boulder District


Land Status

Not available


Holdings

Not available


Workings

Not available


Ownership

Owner Name: Elkhorn Mining Co.
Home Office: Boulder, Mt 59632.

Owner Name: John Lewis, Elkhorn Mining Co., Boulder Bank Bldg. Boulder Mt. 59632


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1949
Discovery Method: 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: TABULAR, PODS


Structure

Type: R
Description: Boulder Batholith


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: Late Cretaceous


Analytical Data

Analytical Data: ORE SHIPMENTS CONTAINED 5 TO 133 OZ AG/TON AND 0.14 TO 1.61% U3O8


Materials

Ore: Silver
Ore: Galena
Ore: Pitchblende
Ore: Molybdenite
Ore: Uraninite
Ore: Chalcopyrite
Gangue: Limonite
Gangue: Quartz
Gangue: Barite
Gangue: Pyrite


Comments

Comment (Deposit): Discovery Year: ? (RADIOACTIVE MINERALS DISCOVERED 1949)

Comment (Commodity): USE AS HEALTH MINE STARTED IN 1952

Comment (Deposit): QUARTZ MONZONITE IS INTRUDED BY AT LEAST 2 FLAT-LYING SHEETS OF ALASKITE UP TO 25 FT THICK. URANIUM MINERALS NOT FOUND AT THE SURFACE. A CHALCEDONY VEIN CARRIES THE ORE.

Comment (Workings): WORKINGS CONSIST OF TWO VERTICAL SHAFTS AND DRIFTS AT DEPTHS OF 80, 100, AND 140 FT. MINE REMAINS OPEN AS A HEALTH CURE DUE TO PRESENCE OF RADON GAS 150FT WORKING SHAFT, AN ELEVATOR SHAFT. DRIFTS EXTEND FROM THE MINING SHAFT FOR 80-170 FT TO THE SW AND 150-180 FT TO THE NE.


References

Reference (Deposit): USGS BULL 988-G, P. 143-155.

Reference (Deposit): MBMG BULL 16, P. 39-40.

Reference (Deposit): USGS PP 428, P. 20, 40-42, 94, PL. 1.

Reference (Deposit): 1950 GEOLMAP ROBERTS, W., USGS BULL., 988-

Reference (Production): USGS BULL, 988-G


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.