Region
Arizona
1
Bighorn Mountains (Wyo. and Mont.)
1
California
1
Colorado
1
Colville Indian Reservation
1
Crazy Mountains
1
Duluth Complex
1
Duluth Complex (Minn.)
1
Gunnison County
1
Idaho
1
Lemhi County
1
Minnesota
1
Montana
1
Plomosa Mountains
1
Plomosa Mountains (Ariz.)
1
Tincup Mining District (Colo.)
1
Tobago
1
Trinidad and Tobago
1
Washington (State)
1