SEM, EDS and vibrational spectroscopic study of the sulphate mineral rostite AlSO4(OH,F)•5(H2O)

被引：6

作者：

Frost, Ray L. ^{[1
]}

Scholz, Ricardo ^{[2
]}

Fernandes Lima, Rosa Malena ^{[3
]}

Lopez, Andres ^{[1
]}

机构：

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

[2] Univ Fed Ouro Preto, Sch Mines, Dept Geol, BR-3540000 Ouro Preto, MG, Brazil

[3] Univ Fed Ouro Preto, Sch Mines, Min Engn Dept, BR-3540000 Ouro Preto, MG, Brazil

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2015年 / 151卷

基金：

澳大利亚研究理事会;

关键词：

Rostite; Sulphate; Hydroxyl; Infrared; Raman spectroscopy; SEM; EDX;

D O I：

10.1016/j.saa.2015.06.123

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We have studied the mineral rostite, a sulphate mineral of aluminium of formula AlSO4(OH,F)center dot 5(H2O). The mineral is formed in mine dumps and wastes. Chemical analysis proves the presence of Al, F and S. A single intense band is observed at 991 cm(-1) and is assigned to the Raman active SO42- v(1) symmetric stretching vibration. Low intensity Raman bands observed at 1070, 1083, 1131 and 1145 cm(-1) are assigned to the SO42- v(3) antisymmetric stretching vibration. Multiple Raman and infrared bands in the OH stretching region are assigned to the stretching vibrations of water. The higher wavenumber band at 3400 cm(-1) may be due to the hydroxyl stretching vibrational mode. These multiple bands prove that water is involved in different molecular environments with different hydrogen bond strengths. Vibrational spectroscopy enhances our knowledge of the molecular structure of rostite. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：616 / 620

页数：5

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