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Region
- Appalachian Basin5
- Uinta Basin (Utah and Colo.)5
- Utah3
- ColoradoJackson County2
- ColoradoRoutt County2
- Fort Union Formation2
- Piceance Creek Basin (Colo.)2
- Powder River Basin (Wyo. and Mont.)2
- Antarctica1
- Arizona1
- Colorado1
- ColoradoBoulder County1
- ColoradoGrand County1
- ColoradoJefferson County1
- ColoradoLarimer County1
- ColoradoPiceance Creek Basin1
- Ganymede (Satellite)1
- Great Lakes Region (North America)1
- Hawaii Island (Hawaii)1
- HawaiiHawaii Island1