The most widely used is muscovite, followed by phlogopite in theindustrial line.  And it is widely used in building materialsline, the fire, fire extinguishing agent, welding, plastics,electrical insulation, paper, bitumen paper, rubber, pearlescentpigments and other chemical industries. Ultra-fine mica powder forplastics, coatings, paints, rubber as functional fillers canimprove its mechanical strength, enhanced toughness, adhesion,anti-aging and corrosion resistance etc.