CRYSTALLOGRAPHIC ANALYSIS OF THE GARNET STRUCTURE TYPE: SYMMETRY IN THE STRUCTURAL ANATOMY

被引：5

作者：

Borisov, S., V ^{[1
]}

Magarill, S. A. ^{[1
]}

Pervukhina, N., V ^{[1
]}

机构：

[1] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk, Russia

来源：

JOURNAL OF STRUCTURAL CHEMISTRY | 2018年 / 59卷 / 02期

关键词：

crystallographic stability; crystallographic analysis; cation sublattices; coherent assembly; garnet structure type; beta-W structure; menezesite;

D O I：

10.1134/S0022476618020154

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The crystallographic analysis of the garnet structure type (Al2Ca3(SiO4)(3), Ia3d symmetry) establishes the determining role of the [AlCa6Si6] cation group with the local symmetry 3 in the structure formation. The glide planes of three directions coherently assemble these groups. High structural stability (three not symmetry-fixed coordinates per 80 atoms, the fundamental volume V* similar to 17 angstrom(3)) promotes the occurrence of various atomic compositions in it. The relation with the beta-W structure type and the structure of menezesite mineral is shown.

引用

页码：365 / +

页数：6

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