AM_Cordierite_7
Formula: Mg1.766 Fe.18 Al5.743 Si4.823 O18.71 H.71
Name: Cordierite
Unit cell: 17.089 9.737 9.344 90.0 90.0 90.0 , V=1554.80
Space group: CCCM (66)

Wallace J H , Wenk H R , American Mineralogist , 65 (1980) p.96-111, Structure variation in low cordierites, Brg 50