Transcription of CHARACTERIZATION OF CHRYSOTILE, ANTIGORITE AND …
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CHARACTERIZATION OF CHRYSOTILE, ANTIGORITE AND …
883 The Canadian MineralogistVol. 41, pp. 883-890 (2003) CHARACTERIZATION OF chrysotile , ANTIGORITEAND LIZARDITE BY FT-RAMAN SPECTROSCOPYCATERINA RINAUDO AND DANIELA GASTALDID ipartimento di Scienze e Tecnologie Avanzate, Universit del Piemonte Orientale Amedeo Avogadro ,Corso Borsalino 54, I 15100 Alessandria, ItalyELENA BELLUSOD ipartimento di Scienze Mineralogiche e Petrologiche, Universit di Torino, Via Valperga Caluso 35, I 10125 Torino, ItalyABSTRACTWe analyzed samples of ANTIGORITE , lizardite and fibrous chrysotile , three representative minerals of the serpentine group, todetermine their chemical and structural properties, and their FT-Raman spectra. The low-frequency region of the spectrum (1200 200 cm 1), which corresponds to the lattice-vibration modes, was then analyzed, and the observed bands attributed, on the basisof our results. Raman spectroscopy thus proves useful in identifying the three mineral species, despite their strong similarities instructure and chemical composition.
chrysotile and antigorite, whereas chrysotile and lizardite can easily be identified by analyzing the vibrations of the OH–Mg–O H groups and the bands in the range 550–500 cm –1 . Keywords: Raman spectroscopy, asbestos, serpentine-group minerals, chrysotile, antigorite, lizardite.
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