香花石形态所反映的一种可能的孪晶结构

香花石是我国发现的第一个新矿物,它的形态非常复杂.本文基于香花石形态上出现了左形与右形相聚的现象,对香花石形态进行了重新思考,认为同一单形的左形与右形不能相聚形成单晶体,只能形成孪晶,因此,对原香花石晶体图进行了一些修正,认为原香花石晶体图可能是一个孪晶图.这对深入认识晶体形态及晶体对称理论、澄清长期以来人们并没有足够重视的一些基本概念有重要意义.

A Possible Twin Structure in Hsianghualite Morphology

The morphology of hsianghualie, the first new mineral discovered in China, is very complex. In this paper, we restudy the hsianghualite morphology, based on the fact that the right and left forms appear on hsianghualite morphology,it is realized that the right and left forms can not combine each other on a single crystal morphology but can compose a twin. Based on this realization, we propose that the hsianghualite morphology published before is not a single crystal morphology but a twin. This realization is important for our knowledge about crystal symmetry and crystal morphology, and is helpful to make clear of some basic concepts which had not obtained enough attention of us for a long time in the past.