软玉的热谱特征与热转变机制  

CHARACTERISTIC THERMAL SPECTRA AND MECHANISMS OF THERMAL TRANSFORMATION OF NEPHRITES

作　　者：王春云[1] 张惠芬[1] 

机构地区：[1]中国科学院地球化学研究所,贵阳550002

出　　处：《矿物学报》1991年第3期251-257,共7页Acta Mineralogica Sinica

摘　　要：本文利用差热与热重分析研究了软玉的热稳定性。通过红外光谱测定,系统地阐述了软玉的红外热谱特征,同时结合X射线衍射深入地探讨了软玉的热转变机制,认为软玉热学性质的变化是其各组成矿物热学性质变化的复合,而最终的热转变产物是一种成分和结构都类似于透辉石的Ca-Mg辉石。This paper deals with the thermal stability of nephrites in terms of DTA and TGA. In addition, their characteristic thermal IR spectra are systematically described with special reference to their IR spectra. Meanwhile, the mechanisms of thermal transformation of nephrites are investigated in detail by X-ray diffraction analyses. The results show that changes in thermal properties of nephrites are a complex outcome of changes in thermal properties of component minerals, and that the final thermal transformation product is a kind of pyroxene which is similar to diopside both in composition and in structure.

关 键 词：软玉 热转变 差热分析 红外光谱 

分 类 号：P578.955[天文地球—矿物学]