Single crystal raman spectroscopy of natural finnemanite and comparison with the synthesised analogue
Frost, Ray L., Bahfenne, Silmarilly, Rintoul, Llewellyn, & Langhof, Jorgen (2011) Single crystal raman spectroscopy of natural finnemanite and comparison with the synthesised analogue. Journal of Raman Spectroscopy, 42, pp. 2119-2125.
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The single crystal Raman spectra of natural mineral finnemanite Pb5(AsO3)3Cl from the Långban locality, Filipstad district, Värmland province, Sweden are presented for the first time. It is a hexagonal mineral belonging to the ortho arsenite group, where the [AsO3]3- ion is isolated. The spectra of finnemanite are characterized by a strong band at 734 cm-1 overlying a shoulder at 726 cm-1, and broad overlapping bands in the lower wavenumber with the strongest band positioned at 174 cm-1. Band assignments were made based on band symmetry, experimental band positions from literature and DFT calculated Raman spectrum, and spectral comparison with other ortho arsenite minerals reinerite, cafarsite, and nealite and synthetic lead arsenite compounds Pb2(AsO2)3Cl, Pb2As2O5, and PbAs2O4 . The band at 734 cm-1 was assigned to υ1(AsO3), bands at 726 and 640 cm-1 assigned to υ3, 372 and 357 cm-1 to υ2, and 244, 239 and 207 cm-1 to υ4. The single crystal spectra of finnemanite showed good mode separation, allowing bands to be assigned a symmetry species of Ag, E1g, or E2g.
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|Item Type:||Journal Article|
|Keywords:||finnemanite, paulmooreite, nealite, carfasite, single crystal Raman spectroscopy; antimonite|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)|
|Divisions:||Past > Schools > Chemistry|
Past > QUT Faculties & Divisions > Faculty of Science and Technology
|Copyright Owner:||Copyright 2011 John Wiley & Sons, Ltd.|
|Deposited On:||04 Jan 2012 10:07|
|Last Modified:||05 Jan 2012 15:09|
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