... high-grade paint, coating, ink, rubber, plastics, wire ,cable and so on. Mica Powder Fineness of Mica powder :800 mesh ,1500mesh ,3000 mesh .Mica ... prism.hardness 2-3 ,specific gravity 2.70-3.20. mica powder have special acid-base resistance , chemical stability, also have ... %Iron oxide (Fe2O3)0.06%Water content (H2O)0.25% High quality Mica Powder