Mono Mine

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

Name: Mono Mine  

State:  Montana

County:  Jefferson

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.


Satelite image of the Mono Mine

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

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.