| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1236882 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2006 | 8 Pages |
Abstract
Raman spectroscopy has been used to characterise the jarosite group of minerals of formula Mn(Fe3+)6(SO4)4(OH)12 where M may be K, (NH4)+, Na, Ag or Pb and where n = 2 for monovalent cations and 1 for the divalent cations. Raman spectroscopy proved useful for mineral identification especially where closely related minerals crystallise out from solutions where paragenetic relationships exist between the minerals. The band position of the SO42− symmetric stretching mode proved to be a function of the ionic radius of the cation. The bending modes show a slight dependence. The spectra of the natural samples can be complex. This complexity is attributed to the incorporation of low levels of other cations into the structure.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Ray L. Frost, Rachael-Anne Wills, Matt L. Weier, Wayde Martens, Stuart Mills,