组成岩石的矿物rock-forming mineral

• 他解决了长石、石榴石等主要造岩矿物的X射线鉴定难题。

  He solved the tricky problem of X-ray authentication of major rock-forming minerals such as feldspar and garnet.

• 橄榄石是一种常见的造岩矿物。

  Olivine is a commonly-seen rock-forming mineral.