Last Chance Mine

The Last Chance Mine is a silver and gold 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: Last Chance Mine  

State:  Montana

County:  Lewis and Clark

Elevation:

Primary Mineral: Silver, Gold

Lat, Long: 46.94111, -112.52417

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 Last Chance Mine

Last Chance Mine MRDS details

Site Name

Primary: Last Chance Mine


Commodity

Primary: Silver
Primary: Gold


Location

State: Montana
County: Lewis and Clark
District: Seven-Up Pete 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

Type: Underground


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past 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

Not available


Structure

Not available


Alterations

Alteration Type: L
Alteration Text: Oxidation


Rocks

Name: Andesite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous

Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Andesite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous


Analytical Data

Analytical Data: $2-35 /TON AU (1900), POCKETS $52-614 /TON AU; SHIPPED TO SMELTER: 1-5.83 OZ/TON AU; 13-232 OZ/TON AG.


Materials

Ore: Gold
Gangue: Quartz
Gangue: Pyrite


Comments

Comment (Location): NEAR HEAD OF SEVEN-UP PETE GULCH. ; INFO FROM LAND.ST :(1968)

Comment (Development): MILL WAS BUILT EARLY 1900'S.

Comment (Deposit): VEINS ARE IN A SHEARED ZONE.


References

Reference (Deposit): USGS BULL 842, P. 118