Crystallographic Analysis of the Datolite (CaBSiO4OH) to Okaymalite (Ca2B2SiO7) Structural Transformation under Dehydration

被引：7

作者：

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

Pervukhina, N. V. ^{[1
,2
]}

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

机构：

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

[2] Novosibirsk State Univ, Novosibirsk, Russia

来源：

JOURNAL OF STRUCTURAL CHEMISTRY | 2019年 / 60卷 / 02期

关键词：

datolite -okayamalite transformation; crystallographic analysis; cationic sublattices; local symmetry; stability factors and symmetry;

D O I：

10.1134/S0022476619020112

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The common template of datolite and okayamalite structures is a column-ribbon formed by alternating empty and Si occupied oxygen tetrahedra interconnected by common edges. The columns consolidate with their environment into crystalline structures largely due to the influence of the local symmetry of SiO4 and BO4 tetrahedra. As a result, mirror symmetry pseudo-planes of monoclinic datolite transform into okayamalite m planes; the pseudo-axis 4<mml:mo><overbar></mml:mover> becomes the principal axis, whereas both structures contain glide planes and cation sublattices close in size.

引用

页码：268 / 274

页数：7

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