The Big Ben Molybdenum is a molybdenum mine located in Cascade county, Montana at an elevation of 6,299 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: 6,299 Feet (1,920 Meters)
Commodity: Molybdenum
Lat, Long: 46.96583, -110.71222
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.
Big Ben Molybdenum MRDS details
Site Name
Primary: Big Ben Molybdenum
Commodity
Primary: Molybdenum
Tertiary: Copper
Tertiary: Tungsten
Tertiary: Lead
Location
State: Montana
County: Cascade
District: Neihart 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: Surface/Underground
Ownership
Owner Name: Frank Manniska, Neihart Mont.
Owner Name: Frank Maniska, Neihart, Mont
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1922
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: IRREGULAR
Structure
Type: R
Description: Little Belt Mountains Are A Broad East - West Arch
Type: L
Description: Significant Intrusion By Porphyries And Diorites
Alterations
Alteration Type: L
Alteration Text: Some Silicification Of Country Rock
Rocks
Name: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Gneiss
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Gneiss
Role: Host
Age Type: Associated Rock
Age Young: Holocene
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Molybdenite
Ore: Galena
Ore: Molybdite
Gangue: Quartz
Gangue: Fluorite
Comments
Comment (Location): ADIT USED FOR LOCATION - ALTITUDE APPROXIMATE SECTIONS NOT SURVEYED
Comment (Deposit): US BUREAU OF MINES REPT. OF INV. 4406 GIVES DETAILED INFORMATION ON DRILL CORES
Comment (Deposit): STRONGER FRACTURES HAVE PREFERRED TRENDS FROM N 20 DEG E TO N 85 DEG E, DIPS BOTH TO NORTH AND TO SOUTH. DIAMOND DRILL HOLES DELINEATE DEPOSIT OF AT LEAST 520 FT LONG X 270 FT WIDE X 365 FEET DEEP.
Comment (Workings): SURFACE WORKINGS ARE A SERIES OF TRENCHES AND PITS TOTAL LENGTH OF APPROX. 500 FEET
Comment (Geology): NO AGE ASSIGNED TO PINTO DIORITE ALTHOUGH IT IS CUT BY THE SNOW CREEK QUARTZ PORPHYRY. MAJOR MINERALIZATION OCCURRS IN SNOW CREEK QTZ PORPH. AND PINTO DIORITE. MINOR IN CARPEN. CREEK.
References
Reference (Deposit): HERDLICK, J. A., 1949 , INVESTIGATION OF THE BIG BEN MOLYBDENUM DEPOSIT, NEIHART DISTRICT, CASCADE, MONT; US BUREAU OF MINES REPT. OF INV. 4406
Reference (Deposit): ROBERTSON, A. F., 1951 , MINES AND MINERAL DEPOSITS (EXCEPT FUELS) CASCADE COUNTY, MONTANA, U. S. BUREAU OF MINES INFO. CIRCULAR 7589 P 59 - 61
Reference (Deposit): SCHAFER, P. A., 1935 , GEOLOGY AND ORE DEPOSITS OF THE NEIHART MINING DISTRICT, CASCADE COUNTY, MONTANA, MONT. BUREAU OF MINES AND GEOL. MEMOIR NO. 13 P. 56 - 57
Reference (Deposit): CREASEY, S.C., SCHOLZ, E.A., 1944, BIG BEN MOLYBDENUM DEPOSIT, NEIHART MINING DISTRICT, CASCADE COUNTY: MONTANA GEOLOGICAL SOCIETY PRELIMINARY REPORT, P. 29.
Reference (Deposit): 1943 DIREXPL BUREAU OF MINE
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.
