AM_Cordierite_22 Formula: Mg1.752 Fe.284 Al3.964 Si5 O18.39 Na.052 H.168 Name: Cordierite Unit cell: 17.0807 9.7307 9.3427 90.0 90.0 90.0 , V=1552.82 Space group: CCCM (66)

Malcherek T , Domeneghetti M C , Tazzoli V , Ottolini L , McCammon C A , Carpenter M A , American Mineralogist , 86 (2001) p.66-79, Structural properties of ferromagnesian cordierites, Sample: Zimbabwe