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Modular structure of the veatchite polytypes and of the related pentaboratesстатья
- Авторы: Yamnova N.A., Aksenov S.M., Eremin N.N.
- Журнал: New Data on Minerals
- Том: 49
- Год издания: 2015
- Первая страница: 77
- Последняя страница: 91
- Аннотация: This paper describes a crystal chemical analysis of natural and synthetic veatchite-related pentaborates based on a modular approach. The structures of three polytypes of veatchite Sr2[В5О8(ОН)]2•[B(OH)3]• H2O, as well as similar veatchite synthetic modifications, are built up of three-layer stacks isolated from each other and formed by Ca(Sr, Ba)-polyhedra, connected on both sides with boron-oxygen networks. The most probable basic structure has been defined by analysis of interatomic distances and energy testing with using a universal model of the inter-atomic potentials. The diversity of mineral species in the pentaborates group under consideration are associated with variations of composition, symmetry of blocks and ways of their joining in structure.
- Добавил в систему: Еремин Николай Николаевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | NDM49_P077-091_Natalia_A._Yamnova_Sergey_M._Aksenov_Nikolay… | 2,7 МБ | 20 июня 2017 [YamnovaNA] |