- Stannite, Quartz
- Toenail, 2.9 x 2.5 x 2.3 cm
- Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China
A fine hemispherical cluster of large, lustrous, stepped-faced stannite crystals from recent finds at the Yaogangxian Mine of China. Stannite is a rare copper, iron, zinc, tin sulfide that in recent years has turned up in Bolivia (Potosi), as well as at Yaogangxian. The rich sprinkling of micro quartz crystals is a very nice accent.