Due to the complex formation of granite

Due to the complex formation of granite, the formation conditions are diverse, so there are many types and various classification methods.

According to the type of mineral contained is divided into black granite, muscovite granite, hornblende granite, dimica granite, etc.;

According to the structure can be divided into fine-grain granite, medium-grain granite, coarse-grain granite, porphyritic granite, porphyritic granite, geode granite and gneissic granite, etc.;

According to the accessory minerals can be divided into cassiterite-containing granite, niobium-containing granite, beryllium-containing granite, lepidolite granite, tourmaline granite, etc. Common self-metamorphism such as feldsparization, fritization, and tourmaline.