Characteristic of mica powder are physical stability, insulation, heat and alkali-resistant. The mica powder are high grade filler in paint, coating, rubber, plastic industries. We have many grade.The content of the mica powder usually are as follows:SiO2:44-50%,Al2O3:20-33%,K2O:9-11%,Na2O:0.95-1.8%,MgO:1.3-2%,Fe2O3:600ppm max.For more information, please contact with us. mica powder