Description: This is the Bournonite specimen, from Yaogangxian mine, China, wide around 11cm, 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. This Bournonite crystal of this specimen wide around 3.4cm, has bright metallic luster, Bournonite crystal formed very well, with obvious geometric shape, also there is one spherical Sphalerite aggregates on its one side, and associated with clear Quartz, pale purple Fluorite, small silver-white Arsenopyrite, black Sphalerite, few yellow Chalcopyrite, shiny large Bournonite outstanding on the matrix, first choice of Professional collectors!