The Dark Horse Mine is a gold mine located in Powell county, Montana at an elevation of 7,881 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: 7,881 Feet (2,402 Meters)
Commodity: Gold
Lat, Long: 46.30028, -112.99444
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.
Dark Horse Mine MRDS details
Site Name
Primary: Dark Horse Mine
Commodity
Primary: Gold
Secondary: Copper
Secondary: Silver
Location
State: Montana
County: Powell
District: Racetrack (Danielsville) 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
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1931
Year Last Production: 1940
Discovery Year: 1918
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
Form: LENS
Structure
Type: R
Description: Mount Powell Batholith
Type: L
Description: Racetrack Pluton
Alterations
Alteration Type: L
Alteration Text: Oxidation
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian
Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cambrian
Analytical Data
Analytical Data: 1 OZ/TON AU, 0.5 OZ/TON AG.
Materials
Ore: Gold
Gangue: Quartz
Gangue: Limonite
Comments
Comment (Deposit): VEINLIKE LODES IN THE LIMESTONE NEAR AND APPROXIMATELY PARRALLEL TO THE CONTACT WITH INTRUSIVE ROCK. MANGANESE OXIDE HAS FORMED SMALL REPLACEMENT LENSES AND LODES IN THE LIMESTONE.
Comment (Workings): ADITS, SHALLOW SHAFTS, INACESSIBLE IN 1965, MILL 1 MILE E OF MINE ON GRANITE CREEK
Comment (Location): HEAD OF SMALL TRIBUTARY OF RACETRACK CR ON ROAD OUT OF SPRING. ; INFO FROM LAND.ST :(1971)
References
Reference (Deposit): MBMG BULL 84, P. 48.
Reference (Deposit): MBMG BULL 98, P. 25, 61.
Reference (Production): MBMG BULL 98, P. 61.
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.
