Chalcopyrite

Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (2006)

Specimen size: 3.2 × 2.2 × 1.8 cm = 1.26” × 0.87” × 0.71”
Main crystal size: 2.2 × 1.4 cm = 0.87” × 0.55”