Chalcopyrite from Yaogangxian Mine, Yaogangxian W-Sn ore field, Yizhang Co., Chenzhou, Hunan, China, special to see such stalactitic shape and nice luster chalcopyrite crystal from this location, really cute piece, all completed around, maybe mined out in 2018, size:5.55-2.45-1.57cm, NO.20220823HTK16.