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Region
- Mars (Planet)39
- ArizonaMohave County15
- Powder River Basin (Wyo. and Mont.)13
- Georgia12
- NevadaLincoln County12
- ArizonaCochise County9
- Guiana Highlands9
- Ganymede (Satellite)8
- Kansas7
- Appalachian Basin6
- KansasAnderson County6
- MissouriShannon County6
- MontanaBeaverhead County6
- UtahIron County6
- VenezuelaAmazonas6
- WyomingAlbany County6
- Alaska5
- Cascade Range5
- Goa (India : State)5
- Idaho5