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: China2) Color: White, powder3) 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: