The St. Thomas Mine is a gold mine located in Granite county, Montana at an elevation of 8,399 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: 8,399 Feet (2,560 Meters)
Commodity: Gold
Lat, Long: 46.27583, -113.15833
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.
St. Thomas Mine MRDS details
Site Name
Primary: St. Thomas Mine
Commodity
Primary: Gold
Location
State: Montana
County: Granite
District: Red Lion-Hidden Lake District
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Mr. Thomas Heffern
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1906
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: Cable Stock
Alterations
Alteration Type: L
Alteration Text: Oxidation
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: SELECTED SAMPLE ASSAY: 1 OZ/TON AU.
Materials
Ore: Gold
Gangue: Limonite
Gangue: Quartz
Comments
Comment (Deposit): CUTS ACROSS BEDDING PLANES.
Comment (Workings): CROSS CUT TUNNEL, DRIFT, RAISE, WINZE
Comment (Location): 200FT N OF NINETEEN HUNDRED MINE. ; INFO FROM LAND.ST :(1971)
Comment (Production): SEVERAL THOUSAND DOLLARS OF GOLD (1900)
References
Reference (Production): USGS PP 78.
Reference (Deposit): MBMG BULL 84, P. 46.
Reference (Deposit): USGS PP 78, P. 241.
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.
