Wollastonite: A triclinic, usually flaky, radial, or fibrous aggregate. White Tinged Gray, glass luster. It mainly occurs in the contact metamorphic zone between the acid intrusive rocks and the limestone, and is the main mineral component of the SICARN. It is also found in some deep metamorphic rocks. Wollastonite is a kind of chain-like metasilicate, and it is also a kind of fibrous and acicular stone. Because of its special crystal morphology and structure, it has good insulation property, high whiteness, good dielectric property and high heat resistance. Used as raw materials or fillers for papermaking, ceramics, cement, rubber, plastics, gas filtration materials, heat insulation materials, metallurgical flux, etc.