Region
Colorado
35
Utah
7
United States
6
Gunnison County
5
Park County
5
Wyoming
5
Saguache County
4
Chaffee County
3
Earth (Planet)
3
Nevada
3
Sangre de Cristo Mountains (Colo. and N.M.)
3
Alaska
2
Arizona
2
California
2
Custer County
2
Dolores County
2
Mesa County
2
San Juan County
2
Teller County
2
Uncompahgre Plateau
2
Albany County
1
Animas Mining District (Colo.)
1
Antioquia (Department)
1
Appalachian Basin
1
Atlantic Coast (Canada)
1
Atlantic Coast (U.S.)
1
Belly River Region (Mont. and Alta.)
1
Bonanza Volcanic Field
1
Boulder
1
Boulder County
1
Burlington Mine (Colo.)
1
Cabo Verde
1
Carbon County
1
Cascade Range
1
Central America
1
China
1
Chocó
1
Colombia
1
Colorado Plateau
1
Columbia River Watershed
1
Cumberland Pass area
1
Eagle County
1
East Asia
1
Elkhead Mountains (Colo. and Wyo.)
1
Emery County
1
Fort Huachuca
1
Fremont County
1
Gilson Mountains
1
Gilson Mountains (Utah)
1
Grand County
1
more ...