AM_Lawsonite_16 Formula: Ca (Al1.94 Fe.06) Si2 O10 D4 Name: Lawsonite Unit cell: 5.86092 8.77586 13.1132 90.0 90.0 90.0 , V=674.47 Space group: PMCN (62)

Meyer H W , Marion S , Sondergeld P , Carpenter M A , Knight K S , Redfern S A T , Dove M T , American Mineralogist , 86 (2001) p.566-577, Displacive components of the low-temperature phase transitions in lawsonite, T = 175 K