AM_Cordierite_27
Formula: Mg1.816 Fe.208 Al3.976 Si5 O18 Na.086
Name: Cordierite
Unit cell: 17.089 9.729 9.35 90.0 90.0 90.0 , V=1554.52
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:126231 Tanzania, T = 900 C, t = 24h