mafic component

• 镁铁质

mafic component的用法和样例：

例句

1. Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.
   黑云母一般是镁铁质及超镁铁质岩石中的次要成分。
2. Wenquan granite is composed of two end-member rocks, one is the host rock of the acid end-member, and the other is the microgranular mafic enclave.
   摘要温泉花岗岩体由酸性端元的寄主岩石和暗色微细粒镁铁质包体群及基性岩墙群组成。