The Blue Grass Mine is a gold and silver mine located in Beaverhead county, Montana at an elevation of 6,001 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: 6,001 Feet (1,829 Meters)
Commodity: Gold, Silver
Lat, Long: 45.15972, -112.97389
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.
Blue Grass Mine MRDS details
Site Name
Primary: Blue Grass Mine
Commodity
Primary: Gold
Primary: Silver
Tertiary: Tellurium
Location
State: Montana
County: Beaverhead
District: Bannack District
Land Status
Land ownership: Private
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: Surface/Underground
Ownership
Owner Name: New York-Montana Co.
Years: 1942 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Contact Metasomatic
Operation Type: Unknown
Year First Production: 1863
Discovery Year: 1863
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: Pioneer Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: L
Description: Overthrust Fault Zone Is Exposed In Mine. Dike Trends N50e; 60n.
Alterations
Alteration Type: L
Alteration Text: Garnetization, Oxidation
Rocks
Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Mississippian
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Mississippian
Analytical Data
Not available
Materials
Ore: Tetradymite
Gangue: Calcite
Gangue: Pyrite
Gangue: Specularite
Gangue: Epidote
Gangue: Quartz
Gangue: Garnet
Comments
Comment (Deposit): REPLACEMENT VEINS AVERAGE 1 METER IN WIDTH AND LOCALLY ATTAIN 5 METERS. VEINS ARE NOT CONTINUOUS ALONG THE CONTACT.
Comment (Workings): ORE ALONG CONTACT WAS MINED FROM AN OPEN CUT 40 METERS LONG AND 7 METERS WIDE.
Comment (Development): BLUE GRASS AND GOLD BUG CLAIMS WERE PATENTED ON GROUND ORIGINALLY OCCUPIED BY THE DAKOTA CLAIMS
References
Reference (Deposit): MBMG BULL 6, P. 42-43.
Reference (Deposit): MBMG BULL 85, P. 81-83.
Reference (Deposit): 1931 COMPILE M.B.M.G. BULL. 6
Reference (Deposit): 1972 COMPILE M.B.M.G. BULL. 85
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.
