One beautiful cebinet size specimen of clear quartz crystals, overgrowth by chalcopyrite with nice striation and mirror lustrous galena crystals.
Borieva mine, Madan, Bulgaria
One beautiful miniature specimen of rhodochrosite, chalcopyrite, and sphalerite.
Sturnitsa mine, Davidkovo area, Smolian region, Bulgaria
Hot from the mine! One very aesthetic specimen of sphalerite, chalcopyrite, and pyrite overgrowth by exceptionally long quartz needles.
One perfect, cabinet-size specimen, of skeletal developed galena, overgrowth by sphalerite-marmatite, chalcopyrite, quartz, and pyrite. Galena has rounded crystals, due to desolvation.
One perfect cabinet-size specimen of chalcopyrite overgrowth by well-developed skeletal galena crystals, lately strongly dissolved.
One vibrant color cabinet size specimen of oxidized galena followed by chalcopyrite, sphalerite – marmatite, pyrite, and quartz
size 72 x 64 x 28 mm
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
One excellent cabinet size specimen shows clearly the genesis of secondary copper minerals, formed after erosion of chalcopyrite filled cracks in the mother rock.