Raman spectroscopy of the multianion mineral gartrellite-PbCu(Fe3+,Cu)(AsO4)2(OH,H2O)2

被引：4
|
作者：
Frost, Ray L. [1 ]
Xi, Yunfei [1 ]
Palmer, Sara J. [1 ]
机构：
[1] Queensland Univ Technol, Chem Discipline, Fac Sci & Technol, Brisbane, Qld 4001, Australia
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2012年 / 89卷
基金：
澳大利亚研究理事会;
关键词：
Raman spectroscopy; Gartrellite; Tsumcorite; Thometzekite; Arsenate; Sulphate; ARSENATE COORDINATION; VIBRATIONAL ANALYSIS; TSUMCORITE; HELMUTWINKLERITE; THOMETZEKITE; MICROSCOPY; CHEMISTRY; ANIONS; TSUMEB; ACID;
D O I：
10.1016/j.saa.2011.12.034
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The multianion mineral gartrellite PbCu(Fe3+,Cu)(AsO4)(2)(OH,H2O)(2) has been studied by a combination of Raman and infrared spectroscopy. The vibrational spectra of two gartrellite samples from Durango and Ashburton Downs were compared. Gartrellite is one of the tsumcorite mineral group based upon arsenate and sulphate anions. Crystal symmetry is either triclinic in the case of an ordered occupation of two cationic sites, triclinic due to ordering of the H bonds in the case of species with 2 water molecules per formula unit, or monoclinic in the other cases. Characteristic Raman spectra of the minerals enable the assignment of the bands to specific vibrational modes. These spectra are related to the structure of gartrellite. The position of the hydroxyl and water stretching vibrations are related to the strength of the hydrogen bond formed between the OH unit and the AsO4, anion. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：93 / 98
页数：6
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