Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1232886 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2009 | 4 Pages |
Abstract
Raman spectroscopy has been used to study the two arsenite minerals ludlockite and schneiderhöhnite, which have a common structural unit of pentameric arsenite groups. Raman bands for ludlockite are observed at 666, 674, 743, 756 and 798 cmâ1 and for schneiderhöhnite at 685, 719, 739, 774 and 798 cmâ1. Based upon DFT calculations, the band at 798 cmâ1 is attributed to ν1 AsO32â symmetric stretching vibration. Raman bands at 743 and 756 cmâ1 for ludlockite and at 719 and 739 cmâ1 for schneiderhöhnite are assigned to the ν3 AsO32â antisymmetric stretching vibration. Even though the minerals are very dark coloured to black in appearance, successful Raman spectra were collected.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Silmarilly Bahfenne, Ray L. Frost,