Variability of the health effects of crystalline silica: Fe speciation in industrial quartz reagents and suspended dusts-insights from XAS spectroscopy - Di Benedetto, Francesco; d'Acapito, Francesco; Capacci, Fabio; Fornaciai, Gabriele; Innocenti, Massimo; Montegrossi, Giordano; Oberhauser, Werner; Pardi, Luca A.; Romanelli, Maurizio (Physics and Chemistry of Minerals, 2014)