We are Potassium feldspar powder, Quartz powder and lilithium feldspar powder manufacturer, We can offer you the best price and the best quanlity. Details: 1) Place of Origin: China 2) Color: White, powder 3) Chemical composition: A) Potassic feldspar: K2O: 7% to 12.5%; SiO2: 67% to 68%; Al2O3 more than 16.5%; Fe2O3 less than 0.15% or 0.1% or 0. 05% TiO: