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首页> 外文期刊>Journal of structural chemistry >Crystallographic analysis of apatite and tourmaline structure types: Rules of maximum symmetrization and coherent assembly
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Crystallographic analysis of apatite and tourmaline structure types: Rules of maximum symmetrization and coherent assembly

机译:磷灰石和电气石结构类型的晶体分析:最大对称化和连贯组装规则

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摘要

Following the maximum symmetrization principle (maximum decrease in the degrees of freedom of atoms in the structure), the results of the crystallographic analysis of structures of the very abundant apatite type (P6(3)/m), rare krasheninnikovite mineral (P6(3)/mcm), and also abundant tourmaline (R3m) are discussed. The configuration of cations defining the structure in the first two minerals is created by a set of "skeletal" planes of the cubic and hexagonal sublattices, whereas tourmaline contains only a cubic sublattice, with a great similarity to the former in the cation framework geometry.
机译:根据最大对称化原理(结构中原子自由度的最大减少),讨论了非常丰富的磷灰石类型(P6(3)/m)、稀有克拉申尼尼科夫岩矿物(P6(3)/mcm)和丰富的电气石(R3m)结构的晶体学分析结果。定义前两种矿物结构的阳离子构型是由一组立方和六角亚晶格的“骨架”面形成的,而电气石只包含一个立方亚晶格,在阳离子骨架几何结构上与前者非常相似。

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