Region
Colorado
Leadville
3
Douglas County
2
Grand Mesa Region
2
Jefferson County
2
San Juan Mountains (Colo. and N.M.)
2
Alaska
1
Cheraw Fault
1
Costilla County
1
Durango Region
1
Grand Mesa
1
Idaho
1
Montana
1
New Mexico
1
Oregon
1
San Juan Basin (N.M. and Colo.)
1
United States
1
Utah
1
Washington (State)
1