ncat JP928, Marcasite, Mount Carroll Quarry, Mount Carroll, Carroll Co., Illinois, USA September 23, 2019 Steve Illinois North and Central Americas United States
England Lancashire United Kingdom ncat JP2975 Marcasite, Anglezarke Mines, Chorley, Lancashire, England, UK October 8, 2019
Missouri North and Central Americas United States 1275 Marcasite, Miliken Mine, Viburnum Trend, Reynolds Co, Missouri, USA September 22, 2019
Derbyshire England United Kingdom ncat JP1756 Fluorite, Marcasite, Ladywash Mine, Eyam, Derbyshire, England, UK September 17, 2020
