Galena on chalcopyrite

One perfect cabinet-size specimen of chalcopyrite overgrowth by well-developed skeletal galena crystals, lately strongly dissolved.

Chalcopyrite, sphalerite-matmatite, pyrite, galena, quartz and dolomite

One very attractive large cabinet size specimen of quartz, overgrowth by large chalcopyrite crystals in combination with sphalerite-marmatite and galena. In some parts, chalcopyrite is corroded by small pyrite crystals, which is common in this mine. In the last stages of crystallization dolomite, coated with limonite formed small round crystals of all previously crystallized minerals.
size 98 x 45 x 30 mm
„The 9th of September mine“, Madan, Bulgaria

Quartz, chalcopyrite, sphalerite-marmatite and dolomite

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