The crystallographic analysis of six SiO₂ phases (α-quartz, β-tridymite, α- and β-cristobalite, coesite, and stishovite) is performed. The effect of the local symmetry of SiO₄ tetrahedra on the symmetry of phases tending either to highly symmetrical cubic P-cristobalite or hexagonal P-tridymite is shown. The parameters of cation, anion, and joint pseudotranslational sublattices characterizing the atomic configurations of the structures and their individual features are calculated. The relative stability of the phases is considered.

中文翻译：

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SiO 2多晶型物的晶体学分析

进行了六个SiO ₂相的晶体学分析（α-石英，β-鳞石英，α-和β-方石英，堇青石和辉石）。示出了SiO ₄四面体的局部对称性对趋于高度对称的立方P-方英石或六方P-鳞石英的相的对称性的影响。计算阳离子，阴离子和联合假翻译亚晶格的参数，这些参数表征了结构的原子构型及其各个特征。考虑了相的相对稳定性。