The Boss and Atlantus Claims is a silver, lead, and zinc mine located in Cascade county, Montana at an elevation of 5,951 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: 5,951 Feet (1,814 Meters)
Commodity: Silver, Lead, Zinc
Lat, Long: 46.94611, -110.74333
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.
Boss and Atlantus Claims MRDS details
Site Name
Primary: Boss and Atlantus Claims
Secondary: Unity and Rochester
Commodity
Primary: Silver
Primary: Lead
Primary: Zinc
Secondary: Gold
Location
State: Montana
County: Cascade
District: Neihart Mining District
Land Status
Not available
Holdings
Not available
Workings
Type: Unknown
Ownership
Owner Name: Boss Mines, Inc.
Production
Year: 1956
Material type: ORE
Description: Ap_Grade: ^5. % Pb, 6. % Zn, 38 Oz Ag/Ton Ag
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1956
Discovery Year: 1884
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: Little Belt Mountains
Mineral Deposit Model
Not available
Orebody
Form: TABULAR-IRREGULAR
Structure
Type: R
Description: Series N-Ne Trending Near-Vertical Fractures
Alterations
Not available
Rocks
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
Analytical Data: 1453 TONS MINED IN 1956 AVERAGED 3.7 PERCENT PB, 5.8 PERCENT ZN AND 35.2 OZ AG/TON
Materials
Ore: Galena
Ore: Sphalerite
Ore: Tetrahedrite
Gangue: Barite
Gangue: Quartz
Comments
Comment (Reserve-Resource): SAME AS FOR RESERVES AND POTENTIAL RESOURCES
Comment (Workings): DEVELOPED BY 1270-FT. ADIT CROSSCUT WITH DRIFTS PLUS 143 FT. WINZE FROM WHICH 3 LEVELS ARE TURNED FOUR VEINS INTERSECTED BY ADIT CROSSCUT
Comment (Deposit): 4 VEINS ARE EXPOSED. THE STRONGEST IS GENERALLY LESS THAN 10 FT. THICK BUT WIDENS NEAR A CROSS-FAULT TO 50 FT. ORE APPEARS TO BE RICHER WHERE VEIN CUTS RED FELDSPATHIC GNEISS
References
Reference (Deposit): ROBERTSON, A.F., 1951, MINES AND MINERAL DEPOSITS (EXCEPT FUELS) CASCADE COUNTY, MONTANA: U.S. BUREAU OF MINES INFO. CIRC. 7589, P. 24
Reference (Deposit): WEED, W.H., 1900, GEOLOGY OF THE LITTLE BELT MOUNTAINS, MONT: USGS 20TH ANN. RPT. PT. 3
Reference (Production): DMEA FILES
Reference (Deposit): SCHAFER, P.A., 1935, GEOLOGY AND ORE DEPOSITS OF THE NEIHART MINING DISTRICT, CASCADE COUNTY, MONTANA: MONTANA BUREAU OF MINES AND GEOL. MEM. NO. 13, P. 47
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.
