The zeolite fraction of zeolite-rich rocks of different occurrence was calculated using quantitative phase analysis by combined Rietveld and Reference Intensity Ratio (RIR) methods and cation exchange capacity (CEC) by NH, solution. The cross-check results are in good agreement apart from a clinoptilolite-rich sample whose zeolite content from CEC was significantly underestimated.
Zeolite content and cation exchange capacity of zeolite-rich rocks / Gualtieri, Alessandro; Marchi, E; Passaglia, Elio. - 125:(1999), pp. 707-713. (Intervento presentato al convegno 1st International FEZA Conference tenutosi a EGER, HUNGARY nel SEP 01-04, 1999).