Description: Bournonite is the mineral which contain: Pb, Cu, Sb, S elements. It is very rare to see nice quality Bournonite in the worldwide, nice quality Bournonite only be found in Yaogangxian Mine for now, and be loved by worldwide mineral collectors very much, the Bournonite crystal of this specimen wide around 4cm, has bright metallic luster, bournonite crystal formed very well, with obvious geometric shape, associated with clear quartz and pale purple fluorite, shiny large bournonite outstanding on the matrix, museum quality specimen! Professional collectors’ choice.