gangue rock的用法和樣例：
例句
- Paishanlou large size Au deposit is hosted by tonalite in which upper crustal amphibolitic rock inclusions occur.
研究結果表明，排山樓金礦的容礦圍岩是一套以英雲閃長岩為主體，含少量角閃質上殼岩包體及脈岩的組合。 - The hard rock in which diamonds are found is called blue ground, because it is somewhat blue.
他們把發現有鑽石的堅硬岩石叫作藍色脈岩，因為它的顏色有點藍。
