Region
Montana
Prickly Pear Creek Valley
3
Prickly Pear Creek Valley (Mont.)
3
Gallatin County
2
Gallatin River Watershed (Wyo. and Mont.)
2
Helena
2
Bearpaw Formation
1
Big Horn County
1
Big Sky Mine (Mont.)
1
Bitterroot River Valley
1
Blackfeet Indian Reservation
1
Flathead Indian Reservation
1
Helena Region
1
Idaho
1
Jefferson County
1
Judith Basin
1
Judith River Formation
1
Northern Cheyenne Indian Reservation
1
Park County
1
Rosebud County
1
Sweet Grass Hills
1
Wyoming
1