Midnight Mine

The Midnight Mine is a silver mine located in Granite county, Montana at an elevation of 5,801 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: Midnight Mine  

State:  Montana

County:  Granite

Elevation: 5,801 Feet (1,768 Meters)

Commodity: Silver

Lat, Long: 46.33556, -113.27028

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 Midnight Mine

Midnight Mine MRDS details

Site Name

Primary: Midnight Mine
Secondary: Imperial


Commodity

Primary: Silver
Secondary: Copper
Secondary: Manganese
Tertiary: Barium-Barite


Location

State: Montana
County: Granite
District: Philipsburg (Granite-Flint Creek) District


Land Status

Not available


Holdings

Not available


Workings

Type: Underground


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement Vein
Operation Type: Unknown
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Flint Creek Range


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Type: R
Description: Philipsburg Batholith

Type: L
Description: Philipsburg Anticline, Philipsburg Overthrust


Alterations

Not available


Rocks

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

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cambrian

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian

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


Analytical Data

Not available


Materials

Ore: Copper
Gangue: Calcite
Gangue: Barite
Gangue: Quartz


Comments

Comment (Location): ON CAMP CREEK BELOW TOWER.

Comment (Production): SEVERAL $1000

Comment (Workings): SHAFT, CROSSCUT 50 FT BELOW SURFACE. DRIFTS, LOWER WORKINGS INACESSIBLE IN 1906.

Comment (Deposit): SILVER SULFIDES IN GREY QUARTZ.


References

Reference (Deposit): USGS PP 78, P. 211.

Reference (Deposit): USGS BULL 1237.


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.