硅灰石是一种天然产出的单链结构的偏硅酸钙矿物,常产在靠近花岗岩侵入体或石英闪长岩、斜长岩等岩浆岩体的杂质石灰岩中。也有由钙质沉积岩的交代作用或某些岩浆的结晶作用生成的。其共生矿物有透辉石、石榴子石、方解石、石英、符山石、方柱石、长石及少量磁铁矿、黄铁矿等。硅灰石的化学式为CaSiO_3,其中CaO占48.3%、SiO_2占51.7%,常有Fe、Mn等类质同象混入物,故有铁硅灰石、锰硅灰石、锂硅灰石等异种。 Wollastonite is a naturally occurring, single-stranded calcium metasilicate mineral that is commonly found in impurities limestone near granite intrusions or magmatic rocks such as quartz diorite and plagioclase. It is also generated by the metasomatism of calcareous sedimentary rocks or the crystallization of some magmas. Its symbiotic minerals are diopside, garnet, calcite, quartz, Fu Shan, the prism stone, feldspar and a small amount of magnetite, pyrite and so on. Wollastonite chemical formula for the CaSiO_3, CaO accounted for 48.3%, 51.7% of SiO_2, often Fe, Mn and other types of homogeneous mixture, it is iron wollastonite, wollastonite, lithium wollastonite and other species .