underthescopemineral: Marcasite, Calcite FeS2,CaCO3L
underthescopemineral: Marcasite, Calcite FeS2,CaCO3Locality:Limites quarry, Ave-et-Auffe, Rochefort, Namur, Wallonia, BelgiumField of view is 0,8 cmIridescent Marcasite on Calcite. Harjo Neutkens’ Photo -- source link