云南腾冲地热区水热活动强烈,各种岩石明显蚀变,形成了硅化带、明矾石化带、高岭土化带、泥化带和规则混层带。I/M不规则混层主要产于高岭土化带和泥化带。I/M规则混层矿物出现在规则混层带,空间分布上与热泉出露区的方向一致,主要是高温地热蒸气与围岩发生交代作用的产物。I/M混层矿物是蚀变过程中由蒙脱石向高岭石转化的中间产物。 Hydrothermal activities in the geothermal area of ​​Tengchong in Yunnan Province are intense with various alterations of the rocks, forming silicified zone, alunite zone, kaolin zone, mud zone and regular mixed zone. I / M irregular mixed layer is mainly produced in kaolin and mud zone. The I / M regular mixed minerals appear in the regular mixed zone, and the spatial distribution is consistent with the direction of the hot spring outcropping zone, which is mainly the product of high-temperature geothermal vapor and surrounding rock metasomatism. I / M mixed mineral is the intermediate product of the conversion of montmorillonite to kaolinite during the alteration process.