Abstract: 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.

Key words: 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.