Region
Michigan
4
Montana
4
Idaho
3
New Jersey
3
New Jersey Highlands
3
Arizona
2
Belt Supergroup
2
Minnesota
2
Wisconsin
2
Wyoming
2
Albany County
1
Canada
1
Canada, Eastern
1
China
1
Crystal Falls District
1
Dunbar Region
1
East (U.S.)
1
Egypt
1
Goodrich Quartzite (Mich.)
1
Highland Mountains
1
Homestake Mine (S.D.)
1
Inner Mongolia
1
Laramie County
1
Lawrence County
1
Lemhi County
1
Lemhi Range
1
Medicine Bow Mountains (Colo. and Wyo.)
1
Michigamme Formation (Mich. and Wis.)
1
Middle East
1
Moose Formation (Mont.)
1
Murdama Group (Saudi Arabia)
1
New Jersey Highlands (N.J.)
1
Northwestern States
1
Poachie Range
1
Prichard Formation
1
Rocky Mountains Region
1
Sanders County
1
Saudi Arabia
1
Sierra Madre (Wyo. and Colo.)
1
Slim Sam Formation
1
South Dakota
1
Stensgar Mountain
1
Superior, Lake, Region
1
Table Mountain Quartzite (Mont.)
1
Upper Peninsula
1
Washington (State)
1
Yellowjacket Formation
1
Yellowjacket Formation (Idaho)
1