长石；白榴石；霞石及霞石正长岩；萤石(氟石)。
Feldspar; leucite; nepheline and nepheline syenite; fluorspar.
在熔化了的钢中加入石灰、氟石和铁的氧化物，就可以把钢提纯。
Refining is achieved by the addition of lime, fluorspar and iron oxide to the melted steel.
本方法准确度、精密度满足商品检验的要求，已用于出口氟石的检验。
Accuracy and precision of method meets requirements of commodity inspection and the proposed method has been applied to the inspection of the export fluorspar.
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