Bournonite    Yaogangxian Mine, Biai Shi Du, Chen Xhou, Yizhang County, Hunan Prov., China.  This TN sized specimen measures 2.8 x 2.2 x 2.2 cm with crystals to almost 2 cm each.  It is a jumble of crystals without damage but there are several crystal contacts.  Striated crystals of good luster sprout out all over this specimen.  A nice cluster with decent aesthetics.  Very reasonable price.  $150