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C. Conti, I. Aliatis, C. Colombo, M. Greco, E. Possenti, M. Realini, C. Castiglioni and G. Zerbi μ-Raman mapping to study calcium oxalate historical films Journal of Raman Spectroscopy 43

Article first published online: 31 AUG 2012 | DOI: 10.1002/jrs.4072

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Characterization of the oxalate films observed on several ancient monuments is essential in order to study their formation process. μ-Raman mapping on cross-sections allowed, for the first time, to unequivocally identify the mineralogical phases occurring in the films and to obtain direct information on their spatial distribution. Collected data show random distribution of oxalate phases and a higher content of weddellite in the external portions of the films.

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