The Mono Mine is a lead and silver mine located in Jefferson county, Montana at an elevation of 5,200 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
Elevation: 5,200 Feet (1,585 Meters)
Commodity: Lead, Silver
Lat, Long: 46.3, -112.10278
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.
Mono Mine MRDS details
Site Name
Primary: Mono Mine
Secondary: Part of Mono Group
Commodity
Primary: Lead
Primary: Silver
Secondary: Zinc
Secondary: Gold
Secondary: Copper
Tertiary: Antimony
Location
State: Montana
County: Jefferson
District: Amazon District
Land Status
Not available
Holdings
Not available
Workings
Not available
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
Type: R
Description: Boulder Batholith
Alterations
Alteration Type: L
Alteration Text: Sericitization
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
Analytical Data: 0.36 OZ/TON AU; 17.1 OZ/TON AG; 13.8 % PB; 0.9 % CU; 10.2% ZN; 0.2 % MN. SIEVE ANALYSIS: BEFORE CRUSHING: 3:"2, 1:"18; AFTER 1:"100; 1/2:"53; 4:23; 8:20,50:16; 200:8.2; LIQUID LIMIT: 21.2; PLASTICITY INDEX: NP; SWELL: .010
Materials
Ore: Chalcopyrite
Ore: Gold
Ore: Sphalerite
Ore: Galena
Ore: Tetrahedrite
Gangue: Sericite
Gangue: Quartz
Gangue: Pyrite
Comments
Comment (Deposit): VEINLETS OF CARBONATE MINERALS AND SOME OF THE QUARTZ CUT AND REPLACE GALENA AND SPHALERITE. MANY OF THE CARBONATE VEINLETS CONTAIN FINE-GRAINED PYRITE. MOST OF THE WALLROCK IS INTENSELY ALTERED TO SERICITE.
Comment (Workings): 3 CAVED SHAFTS, 4 SHORT ADITS WITH LARGE DUMPS AT EACH. MOST OF THE MINING HAS BEEN DONE ON THE NORTHERN MOST OF 4 PARALLEL VEINS.
Comment (Geology): E EXTENTION OF COMET-GREY EAGLE VEIN.
References
Reference (Deposit): MBMG BULL 16, P. 98.
Reference (Deposit): USGS PP 428, P. 88.
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.
