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A Raman spectroscopic study of the ‘cave’ mineral ardealite Ca 2 (HPO 4 )(SO 4 )·4H 2 O
Author(s) -
Frost Ray L.,
Palmer Sara J.,
Henry Dermot A.,
Pogson Ross
Publication year - 2011
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2855
Subject(s) - raman spectroscopy , mineral , calcite , cave , mineralogy , gypsum , chemistry , guano , infrared spectroscopy , spectroscopy , analytical chemistry (journal) , infrared , materials science , environmental chemistry , metallurgy , archaeology , optics , physics , organic chemistry , quantum mechanics , history
The mineral ardealite Ca 2 (HPO 4 )(SO 4 )·4H 2 O is a ‘cave’ mineral and is formed through the reaction of calcite with bat guano. The mineral shows disorder and the composition varies depending on the origin of the mineral. Raman spectroscopy complimented with infrared spectroscopy has been used to characterise the mineral ardealite. The Raman spectrum is very different from that of gypsum. Bands are assigned to SO 4 2− and HPO 4 2− stretching and bending modes. Copyright © 2011 John Wiley & Sons, Ltd.