ncat JP928, Marcasite, Mount Carroll Quarry, Mount Carroll, Carroll Co., Illinois, USA September 23, 2019 Steve Illinois North and Central Americas United States
Canada North and Central Americas 30088 Pyrite, Marcasite, Calcite, Nanisivik Mine, Nanisivik, Baffin Island, Canada April 28, 2020
Canada North and Central Americas 8066 Calcite, Fluorite, Marcasite, Barite, Francon quarry, Montreal, Quebec, Canada October 5, 2019
Canada North and Central Americas ncat JP1257 Dawsonite, Fluorite, Marcasite, Francon quarry, Montreal, Quebec, Canada October 11, 2019
Australasia Australia New South Wales 5173 Marcasite, Dolomite, Great Cobar Mine, Cobar, New South Wales September 29, 2019