Moonlight Mine

The Moonlight Mine is a 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: Moonlight Mine  

State:  Montana

County:  Lewis and Clark

Elevation:

Primary Mineral: Silver

Lat, Long: 46.66917, -112.06306

Map: View on Google Maps

Satelite View


Satelite image of the Moonlight Mine

Moonlight Mine MRDS details

Site Name

Primary: Moonlight Mine


Commodity

Primary: Silver
Secondary: Lead
Tertiary: Copper


Location

State: Montana
County: Lewis and Clark
District: Scratchgravel Hills District


Land Status

Not available


Holdings

Not available


Workings

Type: Underground


Ownership

Owner Name: Otto Anderson


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

Form: IRREGULAR, PINCH AND SWELL


Structure

Type: R
Description: Boulder Batholith

Type: L
Description: Fault Dipping 45e, Cuts South Vein Scratchgravel Quartz Monzonite Stock


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 Unit
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous


Analytical Data

Not available


Materials

Ore: Galena
Ore: Lead
Gangue: Pyrite
Gangue: Quartz


Comments

Comment (Workings): SHORT ADITS AND INCLINED SHAFTS

Comment (Deposit): 2 VEINS, SMALLER SOUTH VEIN TRENDS WEST, DIPS 20 S AND IS 2.5 FT. WIDE IT IS CUT OFF BY A TRANSVERSE FAULT THAT DIPS 45 E. NORTH VEIN STRIKES NORTH AND DIPES 20 W, NEXT TO HAGING WALL IS 6-24 IN LAYER OF IRON OXIDES AND QUARTZ.

Comment (Location): ABOUT 8 KM NW OF HELENA.

Comment (Production): $10000 CHIEFLY IN AG


References

Reference (Production): USGS BULL 842, P. 51-3.

Reference (Deposit): USGS BULL 842, P. 51-54