伊利石结晶度Kbler,Weaver和Weber指数关系式常数的确定与应用

Determination of Constants C_1-C_(14) in 14 Equations of the Relationships between the Kbler,Weaver and Weber Indices and Their Applications

根据衍射峰具有的不同分布特点推导出了14个伊利石结晶度Kbler指数,Weaver指数和Weber指数关系式中常数项C1-C14的数值,提出了PearsonVII分布中形态参数μ与C5,C6,C11,C12的4个定量方程。由此,14个伊利石结晶度指数关系式可直接用于实际计算。根据阿尔卑斯复理石伊利石形态特征Sc=0.731,由这些关系式进行近变质带上下界线的转换得出与Kbler指数0.42～0.25。△2θ界线对应的Weaver指数和Weber指数的界线值分别为5.8～17.6和300～179。讨论了在自然干燥状态下直接进行伊蒙混层鉴定的基本原理。

Constants C1-C14 in 14 equations of the relationships between the Kiibler, Weaver and Weber indices were deduced and calculated. Four formulae of the relationships between exponent u of the Pearson VII function and C5, C6, C11, C12 were deduced also. Therefore, those 14 equations can be directly used for actual converting analysis. According to the shape parameter Sc = 0.731 for the XRD peak of illite from Alpine flyseh and using these equations the boundaries of anehizone of Weaver and Weber indices were calculated as 5.8-17.6 and 300-179, respectively. Application in distinguishing illite/smeetite mixed-layer phase in air-dried condition was discussed on the basis of the added principle of XRD peaks.