Region
Colorado
14
Alaska
9
New Mexico
6
West (U.S.)
4
Canada
3
Larimer County
3
Utah
3
Arizona
2
Australia
2
Florida
2
India
2
Merry Widow Mine (N.M.)
2
Nevada
2
Oregon
2
Pennsylvania
2
San Miguel County
2
South Australia
2
Wyoming
2
British Columbia
1
California
1
California, Northern
1
Catron County
1
Chugach National Forest
1
Colfax County
1
Dolores River Canyon Wilderness
1
Fairbanks Region
1
Georgia
1
Great Divide Basin
1
Idaho
1
Illinois
1
Jakolof Bay region
1
Jefferson County
1
Kanuti River Region
1
Kentucky
1
Lafayette County
1
Lehigh County
1
Lyon County
1
Mauch Chunk Region
1
Medford Region
1
Mesa County
1
Montana
1
Natrona County
1
Pend Oreille County
1
Rocky Mountains Region
1
San Juan County
1
South Carolina
1
Texas
1
Tropics
1
United States
1
Washington (State)
1
more ...