Bentonite Mines in Montana

Bentonite Mining in Montana

Montana has 43 bentonite-related mine and mineral deposit locations recorded in federal databases. Of these, 3 are currently active operations. Data comes from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records.

The earliest recorded bentonite mine in Montana is Vananda Deposit in Rosebud, Treasure County, with records dating to 1967.

By County

County	Sites
Big Horn County	18
Cascade County	3
Powell County	3
Rosebud County	3
Sheridan County	2
Silver Bow County	2
Valley County	2
Yellowstone County	2
Beaverhead County	1
Deer Lodge County	1
Garfield County	1
Granite County	1
Phillips County	1
Roosevelt County	1
Rosebud, Treasure County	1
Treasure County	1

Bentonite Mines

Mine	County	Type	Status
Concrete Products Co.shale	Yellowstone	Surface	Producer
Hallett Minerals Pit	Treasure	Surface	Producer
Vananda Deposit	Rosebud, Treasure		Producer
Bentonite Occurrence	Big Horn		Occurrence
Bentonite Prospect	Big Horn		Occurrence
Brazil Creek Pit	Valley	Surface	Past Producer
C. M. Russell Game Range Mill Site	Phillips	Processing Plant	Unknown
Clay Deposit N Side of East Fork Reservoir	Granite		Occurrence
Clay Pit	Rosebud		Occurrence
Clay Pit	Rosebud		Occurrence
Clay Pit	Rosebud		Occurrence
Douglas Creek Basin Bentonite	Powell		Occurrence
Glasgow Works	Valley	Surface	Prospect
Great Falls Bentonite	Cascade	Surface	Unknown
Half-Way Sixmile Creek Bentonite	Powell		Occurrence
Hardin Bentonite	Big Horn	Surface	Past Producer
Lincoln Valley Bentonite	Powell		Occurrence
Mackey Bentonite Deposit	Yellowstone		Occurrence
Montana Bentonite	Silver Bow	Surface	Abandoned
Perry Deposit	Silver Bow		Occurrence
Sand Hollow	Deer Lodge		Unknown
Unnamed Bentonite	Roosevelt		Occurrence
Unnamed Bentonite	Sheridan		Occurrence
Unnamed Bentonite	Sheridan		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Bentonite Occurrence	Big Horn		Occurrence
Unnamed Clay Occurrence	Beaverhead		Occurrence
Unnamed Coal Mine	Big Horn	Underground	Prospect
Unnamed Location	Cascade		Occurrence
Unnamed Location	Cascade		Occurrence
Vananda	Garfield	Surface	Unknown
Wyotona Mining Co. Property	Big Horn	Surface	Prospect

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