AM_Cordierite_8
Formula: Mg1.632 Fe.26 Al3.879 Si4.833 O19.22 H1.22
Name: Cordierite
Unit cell: 17.088 9.726 9.335 90.0 90.0 90.0 , V=1551.46
Space group: CCCM (66)

Wallace J H , Wenk H R , American Mineralogist , 65 (1980) p.96-111, Structure variation in low cordierites, sci 624