【摘要】 笔者对我国北方两种不同类型的高岭石进行了化学分析、差热和热重分析、X射线衍射、红外吸收光谱及电子顺磁共振等研究。结果表明，在酸性还原条件下形成的高岭石中，铁主要以Fe2＋的形式置换结构中的Al3＋，同时也有部分铁以亚铁化合物形式存在；在氧化条件下形成的高岭石中，铁主要以Fe3＋形式存在于晶体结构和杂质铁氧化合物中，也有部分以Fe2＋置换Al3＋形式存在。更多还原

【Abstract】 Two types of kaolinite in North China have been studied by chemical analysis, DTA, TG,XRD, IR and EPR. It is found that in the kaolinites formed in the acid-reduction environment Fe exists mainly in the form of Fe2+ replacing Al3+ and ferrous-oxide and in those formed in the oxidation environment, Fe exists mainly in the form of Fe3+ replacing Al3+ and ferric-oxide. Also, there is a part of Fe which exists in the fcrm of Fe2+ replacing Al3+.更多还原