我国主要白云母的矿物学特征研究

利用X射线荧光光谱分析（XRF）、常规化学分析、X射线光电子能谱分析（XPS）和粉晶X射线衍射分析（XRD）等手段对我国主要白云母进行了系统的矿物学研究，并与印度白云母进行了详细的对比分析，探讨了我国白云母与印度白云母在表丽化学组成和化学态、体栩化学成分、晶体结构方面的差异。研究发现：印度白云母表面K更多地表现为缺失留下空位，表面O严重缺失、不足，四面体层中Si有更多的暴露，表面化学键的不饱和程度高于我国白云母，表现出更高的表面活性。我国主要白云母产地的白云母为2M；型白云母，晶胞参数a、b值随结构中铁和镁离子含遗的增加而增大。

MINERALOGICAL CHARACTERISTICS OF MAIN MUSCOVITES IN CHINA

The mineralogical characteristics of China's main muscovites were described systemically by X-ray fluorescence(XRF), conventional chemical analysis, X-ray photoelectron spectrometry (XPS) and powder X-ray diffraction (XRD). Differences between China's muscovites and India's, especially in surface chemical composition and chemical state, bulk chemical composition and crystal structure, were discussed in detail. One can see that a lot of potassium (K) on the surface of India's muscovites is of absence,and keeping empty positions; the surface oxygen(O) is seriously absent and deficient; the silicon of tetrahedron layers exhibits more exposure. The unsaturation degree of surface chemical bond of India's muscovites is higher than that of China's. It may be due to higher surface activity. China's main muscovites are generally of the 2M_1 type. The values of lattice parameters a and b increase with increasing iron and magnesium ion contents in the muscovite structures.