The structures of the natural zeolite direnzoite and its synthetic counterpart ECR-1 were unravelled almost simultaneously using synchrotron powder diffraction. As a matter of fact, the structure refinement of Na-ECR-1 was crucial for the structure solution of direnzoite, which is the lastest discovered natural zeolite. The two structures are distinguished by a 1:1 polysomatic sequence of mordenite (MOR) and mazzite (MAZ) layers. Here, both the crystal structures are discussed and compared in the attempt to disclose their structure directing chemical and kinetic factors.
The comparison of the crystal structures of direnzoite, a new zeolite from Massif Central (France), and its synthetic counterpart ECR-1 / Gualtieri, Alessandro; E., Galli. - STAMPA. - 174:(2008), pp. 499-504. (Intervento presentato al convegno N/A tenutosi a N/A nel N/A) [10.1016/S0167-2991(08)80249-2].