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 ncat JP1257 Dawsonite, Fluorite, Marcasite, Francon quarry, Montreal, Quebec, Canada October 11, 2019
Africa Egypt 5083 Goethite, Marcasite, White Desert, Farafra Oasis, near border with Libya, Egypt September 29, 2019
Derbyshire England United Kingdom ncat JP1756 Fluorite, Marcasite, Ladywash Mine, Eyam, Derbyshire, England, UK September 17, 2020
Canada North and Central Americas 8066 Calcite, Fluorite, Marcasite, Barite, Francon quarry, Montreal, Quebec, Canada October 5, 2019
