Sericite (Sericite) is a natural fine-grained muscovite, is a subspecies of muscovite, is layered silicate, silicon-oxygen tetrahedron structure sandwiched by two layers of aluminum octahedral layer consisting of silicon compound oxygen layer. 
 Sericite crystals are monoclinic, crystal flake, with a silky luster (shiny mica was glass), pure blocks of gray, purple, pink, white, radius to thickness ratio> 80, the proportion of 2.6 to 2.7, hardness 2 3, flexible, flexible, abrasion resistance and wear resistance; heat insulation, insoluble in acid solution, chemically stable. 
 Applications; coatings [architectural coatings, fire-resistant coating; heavy-duty coatings, paint, etc.]; metallurgy casting [blast gun with mud raw material]; welding; engineering rubber; insulation materials; friction material [Automotive Brake Systems Co., raw material] ; cosmetics; ceramics [color glaze. billet]; materials [waterproofing membrane. gypsum board. asphaltic oil felt]; insulating material; paper;