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A raman and infrared spectroscopic study of Ca2+ dominant members of the mixite group from the Czech Republic

By Jiri Cejka, Jiri Sejkora, Jakub Plasil, Eloise C. Keeffe, Silmarilly Bahfenne, Sara J. Palmer and Ray L. Frost


Raman microscopy of two mixite minerals BiCu6(AsO4)3(OH)6.3H2O from Jáchymov and from Smrkovec (both Czech Republic) has been used to study their molecular structure, which is interpreted and the presence of (AsO4)3-, (AsO3OH)2-, (PO4)3- and (PO3OH)2- units, molecular water and hydroxyl ions were inferred. O-H…O hydrogen bond lengths were calculated from the Raman and infrared spectra using Libowitzky’s empirical relation. Small differences in the Raman spectra between both samples were observed and attributed to compositional and hydrogen bonding network differences

Topics: 030606 Structural Chemistry and Spectroscopy, mixite, arsenate, hydrogenarsenate, phosphate, hydrogenphosphate Raman, infrared, spectroscopy, molecular water, hydroxyl ions, hydrogen bonds, O-H…O hydrogen bond lengths
Publisher: John Wiley & Sons Inc
Year: 2011
DOI identifier: 10.1002/jrs.2817
OAI identifier:

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