The Wollastonite Fiber Powder

The formula of Wollastonite is CaSiO3. The ideal chemical specifications are as followed:
　　SSiO2 51.75%
　　CaO 48.25%
　　Heated-Swelling
　　Coefficient:6.5×10-6℃-1
　　Moh’s Hardness 4.5-5.0
　　Density 2.8
　　melting Point 1540℃
　　Refraction Index 1.62
　　The actual chemical specifications
　　are as followed:
　　SiO2 　　41-53%
　　CaO 　　 38-48%
　　Fe2O3 　 1.0%max
　　MgO 　　 2.0%max
　　Al2O3　 1%max
　　S,P 　　 0.1%maz