在四个侵入阶段中，第一阶段侵入的正长闪长岩是该区铁矿最主要的成矿母岩。
The first phase intrusive syenodiorite is the major parent rock for the iron deposits in the area.
普通角闪石是闪长岩、正长岩中常出现的矿物，也常出现在花岗岩中。
Hornblende is often diorite, syenite in minerals, often appear in granite.
因此，花岗岩类是深成岩的一个大类，包括象花岗闪长岩、二长花岗岩、正长花岗岩、英云闪长岩等这样的岩石。
Therefore, the granitoid is a big group of plutonic rocks including such as granodiorite, monzonite, syenogranite, tonalite, and so on.
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