Galena, chalcopyrite, sphalerite and quartz

One very rare, cabinet size  specimen, showing  strongly dissolved galena, followed by quartz sphalerite and chalcopyrite. Chalcopyrite  crystals are also subject of dissolution and have rounded edges.

Sphalerite – marmatite with quartz

Beautiful specimen of extremely well terminated black opaque sphalerite – marmatite, on the top of transparent clear quartz crystals. Marmatite form a tetrahedral crystal with well terminated lustrous faces.