钾含量对白云母X射线衍射特征的影响  

XRD CHARACTERISTICS OF MUSCOVITES WITH DIFFERENT POTASSIUM CONTENTS

作　　者：王德强[1] 王辅亚[1] 王冠鑫[1] 张惠芬[1] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640

出　　处：《大地构造与成矿学》2004年第1期69-73,共5页Geotectonica et Metallogenia

基　　金：广东省自然科学基金资助(编号:000911)

摘　　要：对白云母X射线衍射峰强度的理论计算,发现其衍射峰的强度随钾含量呈规律性变化;对白云母活化释钾后不同钾含量样品进行X射线衍射实验,发现实测的衍射峰强度值与计算值变化趋势一致。计算与实测的白云母特征衍射峰强度比值曲线也有相同的变化趋势。这些结果表明白云母中钾含量是其X射线衍射特征变化的主要原因。The XRD intensities of muscovites with different contents of potas si um have been calculated,and the results show that the intensities vary with the contents of potassium. XRD experiments of muscovites undergoing heat treatment and acidification and hence with different potassium contents, were conducted, a nd the measurement results were compared with the calculated intensities. It was discovered that the measured XRD peak intensities demonstrate variation trends that are consistent with those revealed by theoretical calculations, and the rat ios of I002/I005 for the measured values and calculated ones also show the same variation trend. All the results indicate that the potassium content is the prin cipal factor that determines the variation of the XRD characteristics of muscovi te.

关 键 词：白云母 钾含量 X射线衍射特征 

分 类 号：P575.5[天文地球—矿物学] P578.959[天文地球—地质学]