Bournonite, Quartz and Unknown   Yaogangxian Mine, Bai Shi Du, Chen Xhou, Yizhang County, Hunan Prov., China.   Beautiful floater crystal of bournonite with one small quartz crystal and a tan platy unknown mineral which looks very much like mica (it is not…hardness is too great).  The bournonite has a chip off one corner which should not show…make this the base or back.  Deeply striated, highest luster, and nice complexities makes this a fine display specimen.  Old material seldom seen in today’s market.  3.4 x 2.1 x 2 cm.  250$