高岭石矿物缺陷结构研究——以晋北晚古生代煤系地层高岭岩为例

本文主要根据ＸＲＤ分析和ＩＲ光谱分析的有关参数，对山西境内产部晚古生代煤系夹矸高岭岩的矿物结构特征进行了详细研究，认为高岭石矿物结晶度与其显微结构有关，隐晶质高岭岩比碎屑团粒状和蠕虫状高岭岩结晶指数高。高岭石的无序度主要反映于（ａ，ｂ）面上的随机层错，同时与样品中低缺陷相的比率有关。动荡的水介质环境可能导致其无序度的增加。

A STUDY ON THE DEFECT TEXTURE OF KAOLINITE

Detailed studies have been made of the clay-mineral textures of tonsteins in Late Paleozoic coal-bearing strata in northern Shanxi Province in terms of XRD and IR data. It is suggested that the crystallinity of kaolinite is correlated with its micro-texture, the HI of the cryptocrystal kaolin rocks is higher than that of the pelletal and vermicular kaolin rocks. The disorder of kaolinite is sensitive to random defects in the crystallographic planes (a, b) and the ratio of low-defect phase. The development of defects is chiefly controlled by sedimentary environment and sedimentary hydrochemical condition.