Region
Alaska
12
Utah
11
Colorado
9
Nevada
8
California
7
Montana
7
Arizona
6
China
6
New Mexico
6
Wyoming
6
Idaho
5
Middle East
5
Pennsylvania
5
Earth (Planet)
4
Egypt
4
Iberian Peninsula
4
Iceland
4
India
4
Texas
4
Andes
3
Arabian-Nubian Shield
3
Canary Islands
3
Himalaya Mountains Region
3
Kentucky
3
Mediterranean Region
3
North America
3
Africa, West
2
Antarctica
2
Argentina
2
Arkansas
2
Australia
2
Azerbaijan
2
Brazil
2
Colorado Plateau
2
Ethiopia
2
Germany
2
Grant County
2
Hungary
2
Iran
2
Ireland
2
Killik River Region
2
Korea
2
Minnesota
2
New Zealand
2
North Dakota
2
San Juan Mountains (Colo. and N.M.)
2
Saudi Arabia
2
Shanxi Sheng
2
South Dakota
2
Soviet Union
2
more ...