A Raman spectroscopic study of the basic carbonate mineral callaghanite Cu2Mg2(CO3)(OH)6•2H2O

被引：10

作者：

Cejka, Jiri ^{[1
,2
]}

Sejkora, Jiri ^{[2
]}

Jebava, Ivana ^{[2
]}

Xi, Yunfei ^{[1
]}

Couperthwaite, Sara J. ^{[1
]}

Frost, Ray L. ^{[1
]}

机构：

[1] Queensland Univ Technol, Fac Sci & Engn, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia

[2] Natl Museum, CZ-11579 Prague 1, Czech Republic

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2013年 / 108卷

基金：

澳大利亚研究理事会;

关键词：

Callaghanite; Carbonatohydroxide; Raman spectroscopy; Hydroxyl ions; Carbonate ions; Molecular water; HYDROMAGNESITE; MALACHITE; AZURITE;

D O I：

10.1016/j.saa.2013.01.033

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Raman spectrum of callaghanite, Cu2Mg2(CO3)(OH)(6)center dot 2H(2)O, was studied and compared with published Raman spectra of azurite, malachite and hydromagnesite. Stretching and bending vibrations of carbonate and hydroxyl units and water molecules were tentatively assigned. Approximate O-H center dot center dot center dot O hydrogen bond lengths were inferred from the spectra. Because of the high content of hydroxyl ions in the crystal structure in comparison with low content of carbonate units, callaghanite should be better classified as a carbonatohydroxide than a hydroxycarbonate. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：171 / 176

页数：6

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