Cassiterite with Muscovite - Pingwu Beryl Mine, Huya township, Xuebaoding, Pingwu Co., Mianyang, Sichuan, China More info: https://www.irocks.com/minerals/specimen/52797 This piece features sharp cassiterite crystals of highly unusual habit, and with spectacular luster as well. They are well isolated on contrasting matrix of mica. However, one crystal has a small bit of missing tip, facing outwards. It is hard to see unless you look very, very closely, but it is there. Nevertheless, it is a uniq