Mica powder widely use in high-grade paint, coating, ink, rubber, plastics, wire ... into monoclinic system ,crystal appear as fake hexagonal sheet, flake, clintheriform,sometimes as fake hexagonal prism.hardness ... corrosion resistance.2. its insulativity,heat resistance,anti acid,anti alkali,crush-resistance,exfoliative,be use for electrical ... )0.06%Water content (H2O)0.25% High quality Mica Powder