A very aesthetic cabinet-size specimen of very lustrous black sphalerite marmatite crystals, overgrowth by clear rock crystal.
One exceptional and very aesthetic cabinet size specimen of small cubic and very lustrous galena and pyrite crystals, covered by very thin clear small quartz crystals, very interesting arranged in the space, forming the starts like groups of crystals.
One excellent miniature specimen of clear quartz crystals overgrowth by several twined and very well terminated chalcopyrite crystals, followed by black and very lustrous sphalerite – marmatite tetrahedral crystals, covered by round yellow-orange dolomite
An excellent cabinet size specimen of small galena and sphalerite crystals, overgrowth by very lustrous pyrite crystals lately, in the process of oxidation, coated by bornite and covellite.
An excellent, large cabinet size specimen of quartz overgrowth by sphalerite, galena and followed by very well shaped chalcopyrite. Galena is strongly dissolved in the latest stages of the mineralization process.
One exceptional pseudomorph cabinet size specimen of standing mineral formations of quartz developed on anhydrite, lately dissolved and followed by sphalerite – marmatite, pyrite, and chalcopyrite.
One extremely rare specimen showing both varieties of sphalerite – cellophane (cleiophane) and marmatite. The large green transparent to translucent sphalerite – cleophane isometric crystal, was developed on quartz and galena and lately was overgrowth by small black opaque tetrahedral crystals of marmatite, which shows the evolution in feeding hydrothermal solutions.
A very aesthetic cabinet size specimen of transparent well-formed quartz crystals, overgrowth by black and very lustrous sphalerite-marmatite crystals overgrowth by very well terminated lustrous pyrite crystals