This is a Microcline Feldspar with Aquamarine on Muscovite from Pingwu beryl Mine, Mt Xuebaoding, Pingwu Co., Mianyang, Sichuan, China. An extraordinary Pingwu location piece that features three snow-white Microcline crystals as the dominant mineral with Muscovite and Aquamarine as accessories - a primary feldspar specimen instead of the usual more glamorous species we perhaps expect from here of cassiterite, scheelite, and aquamarine.