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
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.
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
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.
