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用Ｘ衍射分析、探针分析等方法，对可可西里和芒康岩区透长石和石榴子巨晶进行了研究。结果表明，可可西里粗安岩及芒康粗面英安岩中透长石巨晶内部光性均一，无环带和双晶，Ｘ光束见出溶条纹，矿物边部及核部成分变化很小，属高温极低有序度结构状态的钾透长石类型；石榴子石巨晶以Ａｌｍ和Ｐｙｒ为主要的二种端元组分，其结晶深度大约相当于中地壳。
X - ray diffraction, probe analysis and other methods were used to study the feldspar and garnet macrocrystalline in the Kekexili and Mankang rocks. The results show that the macrocrystals in the Hoh Xilian gabion and Mankang gneissic dacite are homogenous, non-annulated and double crystal in the light of X ray, and the composition of the edge and core of the minerals is little changed. High-temperature and extremely low-order structure of the type of potassium peridotite type; garnet macroseggers with Alm and Pyr as the main two kinds of terminal components, the crystallization depth is about the same as the crust.