||Stannite on Quartz and Muscovite
Yaogangxian Tungsten Mine, Yizhang County
7.4x5 CM (cabinet)
The main Stannite is over 2CM, and has exceptional form, luster and is sharp and complete with stacked growth "towers" on the apexes of the crystal. For this rare specie this is a huge crystal with remarkable shape, much better than the usual globular masses without distinct faces. Overall esthetics and condition are fantastic for this usually nondescript mineral. The color ranges from silver black to a brassy golden depending on the angle of illumination. Yaogangzian Stannites are the best in the world, redefining the species, this is a very fine example.