The crystal structure of carminite: Refinement and bond valence calculations

被引：9
|
作者：
Kharisun [1 ]
Taylor, MR [1 ]
Bevan, DJM [1 ]
Pring, A [1 ]
机构：
[1] S AUSTRALIAN MUSEUM,DEPT MINERAL,ADELAIDE,SA 5000,AUSTRALIA
来源：
MINERALOGICAL MAGAZINE | 1996年 / 60卷 / 402期
关键词：
carminite; crystal structure refinement; hydrogen bonding network;
D O I：
10.1180/minmag.1996.060.402.11
中图分类号：
P57 [矿物学];
学科分类号：
070901 ;
摘要：
The crystal structure of carminite, PbFe2(AsO4)(2)(OH)(2) has been refined. The mineral is orthorhombic, Cccm with a = 16.591(2), b = 7.580(1), c = 12.285(1) Angstrom, Z = 8; the structure has been refined to a conventional R = 3.3% using 913 observed reflections [I>2 sigma(I)]. The structure contains stepped chains of edge-sharing pairs of Fe(O,OH)(6) octahedra; these chains are linked by AsO4 tetrahedra and Pb atoms in distorted square antiprismatic co-ordination. The hydrogen bonding network in the structure has been modelled using bond valence calculations.
引用
收藏
页码：805 / 811
页数：7
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