9AF27Q0: Botryoidal growths of Stannite crystals whose faces and edges have very pronounced curvatures, of deep grey color, with very well defined crystals of Arsenopyrite and Quartz. The piece has a slight fissure but the matrix is stable. The Stannite, which in this locality is easily confused with Sphalerite, has been properly analyzed and we’ll send a copy of the analysis to the buyer. A mine that has produced excellent world-class examples of Fluorite and interesting sulphides.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (2004)

Specimen size: 6.2 × 5.4 × 3.9 cm = 2.44”

Main crystal size: 0.3 × 0.2 cm = 0.12”