TOPOLOGIC SYMMETRY AND REAL SYMMETRY IN FRAMEWORK SILICATES

被引:25
作者
GOTTARDI, G
机构
[1] Istituto di Mineralogia e Petrologia, Università di Modena, Modena, I-41100
来源
TSCHERMAKS MINERALOGISCHE UND PETROGRAPHISCHE MITTEILUNGEN | 1979年 / 26卷 / 1-2期
关键词
D O I
10.1007/BF01081289
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The topologic symmetry of a framework silicate is reduced to topochemical symmetry by an ordering inside the tetrahedra; each further reduction of symmetry may be due to one of the following three causes: 1 ordered distribution of extraframework cations, 2 squeezing of the framework, 3 repulsion of extraframework cations. © 1979 Springer-Verlag.
引用
收藏
页码:39 / 50
页数:12
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