一、总论萤石的化学成分是氟化钙(CaF_2),其中氟占48.8%,钙占51.2%。有时,萤石含氯的类质同象杂质(主要为黄萤石)。在某些情况下还含有含地沥青的杂质,气体和液体。其它杂质则有 Fe_2O_3、稀土元素,以及铀。萤石的得名是因为它具有降低铁矿石和别的矿石熔解温度的性能。“氟石”则由拉丁字“Fluorum”(氟)而得名。 First, the general The chemical composition of fluorite is calcium fluoride (CaF_2), which accounted for 48.8% of fluorine, calcium accounted for 51.2%. Sometimes fluorite chlorine-containing isomorphous impurities (mainly yellow fluorite). In some cases it also contains bitumen-containing impurities, gases and liquids. Other impurities are Fe_2O_3, rare earth elements, and uranium. Fluorite is named because of its ability to lower the melting temperature of iron ore and other ores. Fluorite is named after the Latin word “Fluorum.”