30088 Pyrite, Marcasite, Calcite, Nanisivik Mine, Nanisivik, Baffin Island, Canada April 28, 2020 Steve Canada North and Central Americas Pyrite after marcasite, with calcite and a second generation of pyrite. The calcite is fluorescent pink under longwave UV. Video best viewed full screen.
Australasia Australia Tasmania 2392 Dolomite, Pyrite, Sphalerite, Galena, Comet Mine, Dundas, Tasmania September 22, 2019
Arizona North and Central Americas United States ncat JP644, Calcite, Peabody Mine (Moore Mine), Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA September 23, 2019