Australasia Australia Tasmania 1730 Marcasite, Fluorite, Mt Bischoff, Waratah, Tasmania September 22, 2019
Illinois North and Central Americas United States ncat JP928, Marcasite, Mount Carroll Quarry, Mount Carroll, Carroll Co., Illinois, USA September 23, 2019
Illinois North and Central Americas United States 20038 Calcite, Pyrite, Marcasite, Conco Mine, North Aurora, Kane Co., Illinois, USA October 27, 2019
