A very showing piece of long-axes quartz crystal overgrought by isometric calcite rhombohedron crystal and lately covered by small grains quartz and followed by flat lustrous yellow calcite rhombohedron crystals
One very old cabinet size specimen of quartz, covered with steep scalenohedron calcite crystals, build in the alternation of several generations of calcite and quartz very thin ( less than a millimeter) layers. Later on, these scalenohedron crystals were coated by limonite. At the end of crystallization process appear white, flat rhombohedron calcite crystals.
An excellent, large cabinet size specimen, presenting galena crystalized on chalcopyrite, and after particular desolvation, corroded by pyrite replacing chalcopyrite and galena
A very attractive specimen of steep calcite scalenohedrons followed by thin quartz layers and covered with several portions of later generation of calcite. The crystals were broken by tectonic moves and later rehealed by transparent calcite.
An extraordinary cabinet size specimen of large quartz crystals covered with very well terminated bundles of stilbite crystals lately replaced by calcite and covered with quartz aggregates
An excellent miniature specimen showing a „cast“ of quartz, covering steep scalenohedron crystals, secondary completely dissolved.
A unique specimen showing alternation of developing of quartz after calcite pseudomorph. On the top of steep scalenohedron calcite crystals, were crystallized two thin layers of small quartz crystals. Due to pulsation character of the solutions, between two quartz layers were developed the second generation of calcite. On the top of the first quartz layer, start developing of thin quartz crystals lately cemented in a calcite aggregate. In the end, of the process, all calcite crystals were dissolved and stay just the cast of quartz
An excellent specimen showing almost full paragenesis of Madan. On the top of small syngeneticalli developed sphalerite and galena, were developed chalcopyrite large crystals secondary overgrought by large cubic well-shaped galena of the second generation
Funny specimen showing two calcite and quartz covered calcite scalenohedral crystals twined in „fishtail“ law, developed on quartz crystals and looking like one of them is trying to swallow the other
A nice aesthetic specimen presenting steep calcite scalenohedron crystals, developed on quartz, lately covered by second-generation quartz.