What is Wollastonite? Wollastonite is a calcium, silicon, and oxygen-based industrial mineral. It is generally white, although it can also be colorless or gray. CaSiO3 is the molecular formula of Wollastonite. 2.86-3.09 is the specific gravity of it. What are the Purposes of using Wollastonite? Wollastonite increases weather resistance, lowers brightness and coloring, and works as a flatting and suspension agent, as well as performing as a smoothing and suspending agent. What are the Specifications? Specifications of Wollastonite Serial No Technical Index Percentage (%) 1 SiO2 53.78 2 CaO 43.41 3 Fe2O3 0.39 4 MgO 0.95 5 Whiteness 90.52 6 Mesh(325) 3.00% 7 HCl insoluble matter 0.25% What are the Uses in Ceramics? Wollastonite is used in the manufacture of ceramics. It reduces firing and drying shrinkage, and lowers the temperature at which the glasslike stage is constructed. It minimizes instability and glaze problems in ceramic production and reduces shrinkage and gas expansion. What are the other Applications? In spite of being used in ceramics, wollastonite is also used in plastics, steel, and in the production of paints and coatings.