tuffite

1.The ore-bearing rock is composed mainly of andesitic tuff and tuffite.

作者在赋矿层中首次发现了层状电气岩。

2.The main kinds of rocks include carbonate rocks, tuffite, siliceous rocks and quartz sand-stone.

主要岩包括碳酸盐岩、沈积凝岩、矽质岩和英砂岩。