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Crystal structure of nanlingite - the first mineral with a [Fe(AsO3)(6)] configuration

文献类型：期刊论文

作者Yang, Zhuming2; Giester, Gerald1; Ding, Kuishou2; Tillmanns, Ekkehart1
刊名EUROPEAN JOURNAL OF MINERALOGY
出版日期2011
卷号23期号:1页码:63-71
关键词nanlingite arsenite crystal structure iron-arsenite cluster new chemical formula
ISSN号0935-1221
DOI10.1127/0935-1221/2011/0023-2075
文献子类Article
英文摘要Nanlingite was first described as a new mineral from a dolomitic limestone along a contact between greisenized granite and dolomitic limestone in the Nanling area, Hunan Province, China. The structure was solved and refined on single-crystal X-ray data in space group R (3) over bar m, with a = 10.2114(10), c = 25.689(3) angstrom, V = 2319.2(6) angstrom(3), to R1 = 0.021, wR2 = 0.049. The chemical formula of nanlingite is Na(Ca, Li, Na)(6)(Mg, Fe)(12)(AsO3)(2)[Fe(AsO3)(6)] F-14 with Z = 3 according to the crystal structure refinement. The complex framework is formed by edge- and corner-sharing of distorted NaF8 and CaF4O4 cubes, MgF2O4 octahedra, and AsO3 trigonal pyramids. The lithium atom occupies (22 %) the split site at 0.58(2) angstrom from the main Ca site and exhibits a five-fold coordination with < Li-(O,F)> 2.21 angstrom. The iron atom (at 3b, site symmetry (3) over bar m) is surrounded by six As atoms of AsO3 groups at a distance of 2.40 angstrom with the lone-pair electrons pointing towards the central atom. This [Fe(AsO3)(6)] cluster is a novel configuration in the crystal chemistry of minerals. According to Mossbauer spectra and electron energy-loss spectroscopy data the oxidation state of Fe in nanlingite is mainly Fe-II with a low-spin state. In the configuration of arsenite groups, the distance < As(2)-O > = 1.73 angstrom of the [Fe(AsO3)(6)] clusters is shorter than the normal range. The empirical crystal-chemical formula for nanlingite is (Na0.90Li0.10) Sigma(1.00)(Ca-4.41 Li-1.06 Mg-0.17 Na-0.06 Mn-0.05 square(0.25))Sigma(6.00)(Mg-11.38 Fe0.303+Al0.29Ti0.03)(Sigma 12.00)(AsO3)(2) [Fe-II(ASO(3))(6)](F13.77OH0.16)(Sigma 13.93).
WOS关键词ARSENITE
WOS研究方向Mineralogy
语种英语
WOS记录号WOS:000288404900006
出版者E SCHWEIZERBARTSCHE VERLAGS
资助机构National Natural Science Foundation of China(40872044) ; National Natural Science Foundation of China(40872044) ; National Natural Science Foundation of China(40872044) ; National Natural Science Foundation of China(40872044) ; National Natural Science Foundation of China(40872044) ; National Natural Science Foundation of China(40872044) ; National Natural Science Foundation of China(40872044) ; National Natural Science Foundation of China(40872044)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74180]  
专题中国科学院地质与地球物理研究所
通讯作者Giester, Gerald
作者单位1.Univ Vienna, Inst Mineral & Kristallog, A-1090 Vienna, Austria
2.Chinese Acad Sci, Key Lab Engn Geomech, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Zhuming,Giester, Gerald,Ding, Kuishou,et al. Crystal structure of nanlingite - the first mineral with a [Fe(AsO3)(6)] configuration[J]. EUROPEAN JOURNAL OF MINERALOGY,2011,23(1):63-71.
APA Yang, Zhuming,Giester, Gerald,Ding, Kuishou,&Tillmanns, Ekkehart.(2011).Crystal structure of nanlingite - the first mineral with a [Fe(AsO3)(6)] configuration.EUROPEAN JOURNAL OF MINERALOGY,23(1),63-71.
MLA Yang, Zhuming,et al."Crystal structure of nanlingite - the first mineral with a [Fe(AsO3)(6)] configuration".EUROPEAN JOURNAL OF MINERALOGY 23.1(2011):63-71.

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来源：地质与地球物理研究所

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