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Povlen型纤蛇纹石是一种具有多边形截面的纤蛇纹石,它因直径较粗和衍射谱中出现附加的hkl衍射,而不同于普通的纤蛇纹石,是蛇纹石矿物中的一个新的结构类型。本文对产自我国四川石棉矿中的Povlen型纤蛇纹石,用离子减薄的方法制备了其横截面的样品,在JEM-200 CX型高分辨电子显微镜上,用晶格象直接在单纤维截面上观察到纤蛇纹石和利蛇纹石两种堆垛方式,并讨论了Povlen型纤蛇纹石的成因及电子辐照损伤等问题。
Povlen-type serpentine is a chrysotile with a polygonal cross-section, which is different from the common chrysotile because of its larger diameter and additional hkl diffraction in the diffraction spectrum, A new type of structure. In this paper, samples of cross-section of Povlen chrysotile produced in Sichuan asbestos mine in China were prepared by ion-thinning method. On the JEM-200 CX high-resolution electron microscope, Two kinds of stacking modes of chrysotile and serpentine were observed on the fiber cross section, and the formation of Povlen chrysotile and electron irradiation damage were discussed.