3091 Marcasite, Allens Workings, Mt Bischoff, Waratah, Tasmania October 3, 2019 Steve Australasia Australia Tasmania May be pyrite
Illinois North and Central Americas United States 20038 Calcite, Pyrite, Marcasite, Conco Mine, North Aurora, Kane Co., Illinois, USA October 27, 2019
Illinois North and Central Americas United States ncat JP928, Marcasite, Mount Carroll Quarry, Mount Carroll, Carroll Co., Illinois, USA September 23, 2019
Africa Egypt 5083 Goethite, Marcasite, White Desert, Farafra Oasis, near border with Libya, Egypt September 29, 2019
Australasia Australia Western Australia 3154 Sphalerite, Galena, Marcasite, Cadjebut Mine, Fitzroy Crossing, Western Australia October 3, 2019
