The Big Hole Syncline is a phosphorus-phosphates mine located in Silver Bow county, Montana at an elevation of 5,600 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: 5,600 Feet (1,707 Meters)
Commodity: Phosphorus-Phosphates
Lat, Long: 45.6867, -112.72580
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 Hole Syncline MRDS details
Site Name
Primary: Big Hole Syncline
Commodity
Primary: Phosphorus-Phosphates
Tertiary: Vanadium
Tertiary: Uranium
Tertiary: REE
Tertiary: Nickel
Tertiary: Fluorine-Fluorite
Tertiary: Chromium
Location
State: Montana
County: Silver Bow
Land Status
Land ownership: BLM Administrative Area
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
Type: Federal Lease
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Deposit): THIS RECORD IS FOR A LARGE AREA COVERING THE PHOSPHATE }MINERALIZATION OF THE BIG HOLE SYNCLINE. THUS IT INCLUDES SECS. 4,5,6,8,9,10,14,23,26,36 IN T2S R9W; SECS 30,31,32 T1S R9W DEPOSITS SEQ NO. 0300930095 AND 0300010061 ARE LOCATED HERE DEPOSIT SEQ NO. 0300010548 IS LOCATED HERE. THE SYNCLINE STRIKES N 30-35 W AND IS ASYMMETRIC. OVERTURNED SW LIMB DIPS ARE AS LOW AS 35 DEG, IN NE LIMB DIPS ARE 45 DE APATITE OCCURES AS OOLITIC TO PELLETAL GRAINS THAT ARE VERY FINE TO MEDIUM SAND SIZE, BUT NODULES ARE LOCALLY COMMON
Comment (Reserve-Resource): M1 C3 RETORT MEMBER: Q50; RESOURCE BLOCK ABOVE ENTRY LEVEL, BED AREA 4301270 SQUARE METERS; Q25; RESOURCE BLOCK ABOVE} FIRST 30M BELOW ENTRY LEVEL, BED AREA 4970150 SQUARE METERS; Q10; RESOURCE BLOCK, TOTAL IN AREA, BED AREA 33444000 SQUARE METERS
References
Reference (Reserve-Resource): SOUTHWEST MONTANA, USGS PROFL PAPER 313-E, P. 661-777
Reference (Reserve-Resource): SWANSON, ROGER, 1970, MINERAL RESOURCES IN PERMIAN ROCKS OF
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.
