AM_Titanite_22 Formula: Ca Si2 O5 Name: Titanite Unit cell: 6.543 8.3918 6.3416 90.0 113.175 90.0 , V=320.10 Space group: A12/A1 (15)

Angel R J , American Mineralogist , 82 (1997) p.836-839, Transformation of fivefold-coordinated silicon to octahedral silicon in calcium, silicate, CaSi2O5