A Raman spectroscopic study of the antimonite mineral peretaite Ca(SbO)(4)(OH)(2)(SO(4))(2).2H(2)O.
Raman spectra of mineral peretaite Ca(SbO)(4)(OH)(2)(SO(4))(2).2H(2)O were studied, and related to the structure of the mineral. Raman bands observed at 978 and 980cm(-1) and a series of overlapping bands observed at 1060, 1092, 1115, 1142 and 1152cm(-1) are assigned to the SO(4)(2-)nu(1) symmetric and nu(3) antisymmetric stretching modes. Raman bands at 589 and 595cm(-1) are attributed to the SbO symmetric stretching vibrations. The low intensity Raman bands at 650 and 710cm(-1) may be attributed to SbO antisymmetric stretching modes. Raman bands at 610cm(-1) and at 417, 434 and 482cm(-1) are assigned to the SO(4)(2-)nu(4) and nu(2) bending modes, respectively. Raman bands at 337 and 373cm(-1) are assigned to O-Sb-O bending modes. Multiple Raman bands for both SO(4)(2-) and SbO stretching vibrations support the concept of the non-equivalence of these units in the peretaite structure.
Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, 2 George St., Brisbane, Queensland 4001, Australia. r.frost@qut.edu.au
Ray L
RL
Frost
Eloise C
EC
Keeffe
Silmarilly
S
Bahfenne
D000965:Antimony / Q000737:chemistry*; D008903:Minerals / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013431:Sulfates / Q000737:chemistry*
D008903:Minerals; D013431:Sulfates; C550475:peretaite; C061374:antimonite; D000965:Antimony