mafic

例句：

1. 1. The mafic rocks are rich in iron and nickel.
   这些基性岩石富含铁和镍。
2. 2. The mafic magma is the source of many volcanic eruptions.
   基性岩浆是许多火山喷发的源头。
3. 3. The mafic minerals are useful for making steel.
   基性矿物用于制造钢铁。