Mica powder widely use in high-grade paint, coating, ink, rubber, plastics, wire ,cable ... fake hexagonal sheet, flake, clintheriform,sometimes as fake hexagonal prism.hardness 2-3 ,specific gravity 2.70-3.20. ... mica powder is the fuctional filler of plastic,coating agent,paint,rubber,can improve the mechanical strength,increase toughness ... (Fe2O3)0.06%Water content (H2O)0.25% High quality Mica Powder