Region
Alaska
6
Albany County
1
Appalachian Mountains
1
Appalachian Region
1
Arizona
21
Australia
1
Baltic Shield
3
Beartooth Mountains (Mont. and Wyo.)
2
Belt Supergroup
1
Berkshire County
1
Boulder Batholith (Mont.)
1
Bradshaw Mountains
2
Brady Butte Region
2
Brazil
7
British Columbia
1
Butte
1
California
4
Canada
4
Canadian Shield
1
Carbon County
2
Casper Mountain (Mountain)
1
Casper Mountain Region
1
Chaffee County
1
China
1
Clear Creek County
4
Clearwater County
4
Clinton County
2
Colorado
39
Connecticut
1
Copper Harbor Conglomerate (Mich.)
2
Copper Mountain
1
Creek County
1
Custer County
2
Delaware Water Gap (N.J. and Pa.)
2
Earth (Planet)
3
East (U.S.)
1
Eau Claire Region
1
Erie County
1
Finland
1
Franklin Mountains (Tex. and N.M.)
1
Fredericksburg Region
1
Fremont County
4
Front Range (Colo. and Wyo.)
4
Frontenac
1
Gabon
1
Galena-Roubaix District
1
Gila County
4
Gilpin County
4
Glacier National Park
3
Glacier National Park (Mont.)
2
more ...