AM_Cordierite_5
Formula: Mg1.8 Fe.136 Al3.843 Si4.838 O18.86 H.86
Name: Cordierite
Unit cell: 17.044 9.716 9.334 90.0 90.0 90.0 , V=1545.71
Space group: CCCM (66)

Wallace J H , Wenk H R , American Mineralogist , 65 (1980) p.96-111, Structure variation in low cordierites, sci 1542 mono