透闪石、滑石拓扑定向反应——龙溪软玉的电子衍射研究  

TOPOTACTIC REACTION FROM TREMOLITE TO TALC——AN ELECTRON DIFFRACTION STUDY OF LONGXI NEPHRITE

作　　者：王春云[1] 任国浩 谢源章 李亚国 

机构地区：[1]中国科学院地球化学研究所 [2]武汉工业大学 [3]贵州省理化分析测试研究中心

出　　处：《矿物学报》1989年第4期315-321,385-386,共7页Acta Mineralogica Sinica

摘　　要：通过对龙溪软玉中矿物纤维所进行的电子衍射研究,发现了透闪石针状晶体中存在众多(010)多链层错,透闪石和滑石以(010)为晶界面形成连生,以及滑石晶体呈纤维状存在;探讨了透闪石退变质为滑石的反应运动学和反应动力学机制;提出了拓扑定向反应系列的理论。An electron diffraction study of mineral fibres in Longxi nephrite wascarried out mainly under an H-800 electron microscope, revealing that a lot of(010) multiple-chain faults are developed in acicular crystals of tremolite, tre-molite and talc are intergrowing with (010) as the interface, and talc crystalsoccur in the form of fibres. Thus, the kinematic and kinetic mechanisms fortremolite-talc retrogressive reaction were explored and a theory of topotacticreaction sequence has been proposed.

关 键 词：透闪石 滑石 拓扑定向性 电子衍射 

分 类 号：P578.955[天文地球—矿物学]