Cassiterite with Muscovite

Mount Xuebaoding, Pingwu County, Mianyang Prefecture, Sichuan Province  China

Specimen size: 16.7 × 16.5 × 6.2 cm = 6.6” × 6.5” × 2.4”
Main crystal size: 3.8 × 3.6 cm = 1.5” × 1.4”