- Schoharie, Schoharie County, New York, United States4
- Virginia, United States4
- Bad Harzburg, Harz, Lower Saxony, Germany3
- Brewer Mine, Chesterfield County, South Carolina, United States3
- Bucks County, Pennsylvania, United States3
- Cummington, Hampshire County, Massachusetts, United States3
- Franklin, Franklin Mining District, Sussex County, New Jersey, United States3
- Gilmerton, Edinburgh, Scotland, United Kingdom3
- Haddam, Middlesex County, Connecticut, United States3
- Livingston County, Kentucky, United States3
- Muscaonge (Muskallonge) Lake, Oxbow, Theresa Township, Jefferson County, New York, United States3
- New Hampshire, United States3
- Orange County, New York, United States3
- Rossie, Saint Lawrence County, New York, United States3
- Roughton Gill Mine, Cumberland, Cumbria, England, United Kingdom3
- Sweden3
- Texas, Lancaster County, Pennsylvania, United States3
- Thuringia, Germany3
- Albert Mines, Hillsborough Parish, Albert County, New Brunswick, Canada2
- Austinville, Wythe County, Virginia, United States2