Russian Mineralogical Society
2nd International Conference "Crystallogenesis and Mineralogy"
Conformation of [O2Pb3]2+ double chains in crystal structures of mendipite Pb3O2Cl2 - Pb3O2Br2

RMS-DPI code:  2007-1-149-0
Scientific session:  Session 5. Crystal chemistry and crystal morphology of minerals
Author listing:  Siidra O.I., Krivovichev S.V., Depmeier W., Armbruster T.
Principal author:  Siidra Oleg Iohannesovich
Language:  Russian
Abstract - Summary 
(short description):
The conformation of [O2Pb3]2+ double chains of edge-sharing OPb4 oxocentered tetrahedra is discussed. The conformation can be interpreted as an adaptation of tetrahedral chains to the large halide ions (Br-, Cl-). Such conformation was previously observed for single chains of edge-sharing [XA4] anion-centred tetrahedra. This adaptation is very reminiscent of that of silicate chains to large cations (Ca, Na, REE).
RMS-DPI code:  2007-1-149-0
Proceeedings volume 
in the RMS catalogue:
Crystallogenesis and Mineralogy
Pages:  336-339
File of proceedings 
 345 K
Status:  printed
Accepted:  21/05/2007
Published on-line:  05/01/2008
Permanent address of publication:
Contact author(s):  Siidra, Oleg Iohannesovich

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