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Geographic Information
- Derbyshire, England, United Kingdom4
- Darlington District, South Carolina, United States3
- Auvergne,France1
- Beaver Meadows, Carbon County, Pennsylvania, United States1
- Bergen Hill, Hudson County, New Jersey, United States1
- Bucks County, Pennsylvania, United States1
- Delaware County, New York, United States1
- Europe1
- Franklin, Franklin Mining District, Sussex County, New Jersey, United States1
- Haddam, Middlesex County, Connecticut, United States1
- Hoboken, Hudson County, New Jersey, United States1
- Howes Cave, Cobleskill, Schoharie County, New York, United States1
- Isle Royale, Lake Superior, Keweenaw County, Michigan, United States1
- Lake Superior1
- Mount Vesuvius, Napoli province, Campania, Italy1
- Onondaga County, New York, United States1
- Perkiomen, Montgomery County, Pennsylvania, United States1
- Philadelphia, Philadelphia County, Pennsylvania, United States1
- Rhode Island, United States1
- Saxony, Germany1