Big Ox Mine

The Big Ox Mine is a lead 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: Big Ox Mine  

State:  Montana

County:  Lewis and Clark


Primary Mineral: Lead

Lat, Long: 46.79167, -112.29528

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 Big Ox Mine

Big Ox Mine MRDS details

Site Name

Primary: Big Ox Mine


Primary: Lead
Secondary: Zinc
Secondary: Copper
Secondary: Silver


State: Montana
County: Lewis and Clark
District: Marysville District

Land Status

Not available


Not available


Not available


Not available


Not available


Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Significant: N
Deposit Size: S


General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains

Mineral Deposit Model

Not available


Not available


Type: R
Description: Boulder Batholith

Type: L
Description: Quartz Diorite Dike 500 Ft. Long Dipping 75 Nwmarysville Stock Marysville Stock


Alteration Type: L
Alteration Text: Pyritized Microdiorite


Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

Not available


Ore: Chalcopyrite
Ore: Sphalerite
Ore: Galena
Gangue: Calcite
Gangue: Pyrite
Gangue: Quartz


Comment (Location): ABOUT 0.6 KM E OF DEER CREEK.

Comment (Production): 2 CARLOAD SENT 1934- LEAD ORE, WITH LITTLE OX. MINE.

Comment (Workings): SHAFT


Reference (Deposit): USGS PP 59, P. 16, 18, 61, 77, 80, 111, 137, 165, PL. 1

Reference (Deposit): USBM MIN. YR. 1934, P. 399.