S6816 – Marcasite
9.7 x 6.2 cm. This reflective bluish green patina is striking in person. These isolated marcasite "blisters" swell like bubbles on the skin, each to 1.5 cm across. A little more round-bodied than most others from this locality.
Locality: Pomorzany Mine, Olkusz District, Malopolskie, Poland
