A cool plate of skeletal galena decorated with chalcopyrite incrustations and sphalerite from 9th Septemvri mine, Madan ore field, Bulgaria. Very attractive and geometrical arrangement of stacked and aligned galenas overgrowing each other. Excellent parallel growth of cubes and elongated tetragonal prisms on different axes. They grow one atop another forming an amazing terraced structure. The faces are matt lustrous. Black sphalerite crystals and yellow chalcopyrite grow above. It displays on both sides. In very good condition – some small damages.
Superb specimen from this closed mine – the only one that makes these structures!