The Nellie-Mascot Group is a gold, silver, and lead mine located in Jefferson county, Montana at an elevation of 7,201 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: 7,201 Feet (2,195 Meters)
Commodity: Gold, Silver, Lead
Lat, Long: 45.95556, -112.38472
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.
Nellie-Mascot Group MRDS details
Site Name
Primary: Nellie-Mascot Group
Commodity
Primary: Gold
Primary: Silver
Primary: Lead
Location
State: Montana
County: Jefferson
District: Homestake 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: Brown, Bill, Homestake
Owner Name: Templeton, J.L.
Home Office: Butte, Mt.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1911
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Boulder Batholith
Alterations
Not available
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Silver
Gangue: Quartz
Comments
Comment (Commodity): QUARTZ VEIN HIGH IN SILVER
Comment (Location): SW/4 OF NW/4 OF SECT. 5
Comment (Production): 8 PRODUCTION YEARS. MAIN PRODUCTION IN 1911-1916. OWNER REPORTS $15,000 PRODUCTION AS OF 1935.
Comment (Development): GASOLINE-DRIVEN COMPRESSOR.
Comment (Workings): 2 50 FT SHAFTS AND 6 ADITS; 150, 100, 1000, 700, 300, AND 700 FT. 2000 FT OF DRIFTS, 400 FT OF CROSSCUTS AND 300 FT OF RAISES
Comment (Geology): QUARTZ VEIN CUTS AN APLITE FACIES OF THE BOULDER BATHOLITH.
References
Reference (Deposit): 1960 RECON MONT. BUREAU OF MINES AND GEOL. BULL. 1
Reference (Production): MBMG BULLETIN 16.
Reference (Deposit): GILBERT, F.C., 1935, DIRECTORY OF MINING PROPERTIES: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 15, P. 30.
Reference (Deposit): MBMG BULL 16.
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.
