Crystal structure of a new Ca, Nb-representative of the labuntsovite group

被引：1
|
作者：
Yamnova, NA
Pekov, IV
Kabalov, YK
Schneider, J
Chukanov, NV
机构：
[1] Moscow MV Lomonosov State Univ, Fac Geol, Moscow 119899, Russia
[2] Univ Munich, Inst Kristallog & Angew, D-80333 Munich 2, Germany
[3] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Oblast, Russia
来源：
DOKLADY CHEMISTRY | 2000年 / 375卷 / 4-6期
关键词：
D O I：
10.1023/A:1026687115495
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The structures of monoclinic minerals of the labuntsovite group are based on the zeolite-like framework formed by corrugated chains of Ti(Nb) octahedra linked via shared vertices. The chains, in turn, are linked through four-membered silicon-oxygen rings and additional M-II octahedra, which are completely or partially filled with small divalent cations M2+ = Mn, Fe, Mg, and Zn. The cavities of the framework are occupied by large alkali and alkaline-earth cations and water molecules. Three types of extraframework cationic positions (A(I), A(II), and A(III)) are clearly distinguished by their size and location in the structures of labuntsovite
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收藏
页码：263 / 266
页数：4
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