Region
Montana
10
Michigan
7
Idaho
5
Wisconsin
4
New Jersey
3
New Jersey Highlands
3
Wyoming
3
Arizona
2
Belt Supergroup
2
Minnesota
2
Prichard Formation
2
Saudi Arabia
2
Superior, Lake, Region
2
Alaska
1
Albany County
1
Arctic regions
1
Bergland Group (Mich.)
1
Canada
1
Canada, Eastern
1
China
1
Copper Harbor Conglomerate (Mich.)
1
Crystal Falls District
1
Dunbar Region
1
Earth (Planet)
1
East (U.S.)
1
Egypt
1
Gondwana (Continent)
1
Goodrich Quartzite (Mich.)
1
Highland Mountains
1
Homestake Mine (S.D.)
1
Idaho Batholith (Idaho and Mont.)
1
India
1
Inner Mongolia
1
Keweenaw Peninsula
1
Konnarock Formation
1
Laramie County
1
Lawrence County
1
Lemhi County
1
Lemhi Group (Idaho)
1
Lemhi Range
1
Medicine Bow Mountains (Colo. and Wyo.)
1
Michigamme Formation (Mich. and Wis.)
1
Middle East
1
Middle West
1
Moose Formation (Mont.)
1
Mount Rogers Formation
1
Mountain Region
1
Murdama Group (Saudi Arabia)
1
Negaunee Region
1
New Jersey Highlands (N.J.)
1
more ...