zhè zhǒng kuàng shí de zhǔ yào chéng fèn shì lín shí, yě jiù shì wǒ men cháng shuō de yún mǔ.

这种矿石的主要成分是磷石，也就是我们常说的云母。

The main component of this ore is muscovite, which is what we commonly call mica.