A nice specimen of very lustrous long-needles quartz, space developed on the base of galena, sphalerite, and pyrite. Lately on quartz needles were developed calcite aggregates.
An attractive specimen of well-terminated pyrite with very lustrous crystal faces, singenetically developed with transparent quartz – rock crystal and followed by sphalerite and galena.
A specimen of shiny small galena and sphalerite crystals, followed by bigger pyrite crystals, particularly oxidated and coated by bornite. All these minerals are covered by extremely shiny, long-axes, needle quartz crystals, very well space developed and forming a set of crystals
A very attractive specimen, presenting very well space developed long-axes transparent needle quartz, covering sphalerite, galena, and pyrite crystals
A unique for Bulgaria specimen presenting space developed transparent quartz – rock crystal with very well terminated shiny pyrite crystals coated by iridiscenting bornite and covellite as result of oxidation of , most likely coating of chalcopyrite
A large cabinet size specimen, presenting almost full paragenesis of Madan with very complicated mineralization process. Pseudomorph of pyrite after chalcopyrite, on the top of small galena crystals, followed by quartz and small sphalerite (cleophane) crystals
A very aesthetic cabinet size specimen of long-axes needle quartz crystals, with very lustrous crystal faces, overgrowing base of combined sphalerite and galena small crystals and a little bigger pyrite crystals, showing in some places traces of oxidation and coating by bornite.
A very aesthetic specimen of galena covered with small pyrite and overgrought by transparent , long axes, and very shiny quartz crystals
A beautiful specimen presenting two large galena cubic crystals with very nice sculptures of the crystal faces showing the way of growth of the crystals. The specimen is actually floater what could be seen on the back part of the specimen, where down part of galena is dissolved and replaced by small crystals of pyrite and quartz.
A specimen showing pseudomorph of pyrite after chalcopyrite. On the basement of galena was developed chalcopyrite crystal, lately dissolved and replaced by pyrite. On the other side of the specimen is developed spiral step mark of growing of galena crystal.