Crystal structure of byelorussite-(Ce) NaMnBa<sub>2</sub>Ce<sub>2</sub>(TiO)<sub>2</sub>[Si<sub>4</sub>O<sub>12</sub>]<sub>2</sub>(F,OH) · H<sub>2</sub>O
- Author(s)
- Natalia V Zubkova, Dmitry Y. Pushcharovsky, Gerald Giester, Ekkehart Tillmanns, Igor V Pekov, O D Krotova
- Abstract
The crystal structure of the mineral byelorussite-(Ce) NaMnBa2Ce2Ti2Si8O26(F,OH) · H2O belonging to the joaquinite group was solved and refined to R = 0.033 based on 4813 reflections with I > σ2(I). The parameters of the orthorhombic unit cell are a = 22.301(4) Å, b = 10.514(2) Å, c = 9.669(2) Å, V = 2267.1(8) Å3, sp. gr. Ama2, and Z
= 4. The structure is composed of three-layer sheets, which consist of
dimers of edge-sharing Ti octahedra located between isolated
four-membered [Si4O2]
rings. The sheets are linked to each other by Mn 5-vertex polyhedra to
form a heteropolyhedral framework. Large cavities in the framework are
occupied by Na 6-vertex polyhedra, Ba 11-vertex polyhedra, and REE
9-vertex polyhedra. © 2004 MAIK "Nauka/Interperiodica".
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Anuchin Research Institute and Museum of Anthropology, Russian Academy of Sciences
- Journal
- Crystallography Reports
- Volume
- 49
- Pages
- 964-968
- No. of pages
- 5
- ISSN
- 1063-7745
- DOI
- https://doi.org/10.1134/1.1828140
- Publication date
- 2004
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1051 Geology, Mineralogy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/d74bc55c-4590-45c2-bd26-13bbce5c36db