Crystal structure of shomiokite-(Y), Na3Y(CO3)(3)3H(2)O

被引：0
|
作者：
Rastsvetaeva, RK [1 ]
Pushcharovsky, DY [1 ]
Pekov, IV [1 ]
机构：
[1] MOSCOW MV LOMONOSOV STATE UNIV,DEPT GEOL,MOSCOW 119899,RUSSIA
来源：
EUROPEAN JOURNAL OF MINERALOGY | 1996年 / 8卷 / 06期
关键词：
shomiokite-(Y); crystal structure; carbonate;
D O I：
暂无
中图分类号：
P57 [矿物学];
学科分类号：
070901 ;
摘要：
Shomiokite, Na3Y(CO3)(3) 3H(2)O, M = 391.9, orthorhombic, space group Pna2(1), a = 17.358(8), b = 10.034(4), c = 5.946 (2) Angstrom, V = 1035.6 Angstrom(3), Z = 4, rho(o) = 2.52, rho(c) = 2.51 g/cm(3), lambda(MoK alpha) = 0.71073 Angstrom, mu = 60.2 cm(-1), dimensions (mm) 0.25 x 0.1 x 0.1, F(000) = 768, room temperature, R = 0.059 for 1973 reflections with \F\ > 3 sigma(F). The structure contains isolated mixed complexes, formed by YO9 polyhedra, which share three edges with CO3 groups. The mixed complexes are considered as relicts of corrugated polyhedral layers, described in tengerite, kimuraite and lokkaite, and are connected through distorted Na octahedra, 5-fold polyhedra and a system of H-bonds.
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页码：1249 / 1255
页数：7
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