AM_Melilite_18
Formula: (Ca Na) Al Si2 O7
Name: Melilite
Unit cell: 7.6344 7.6344 5.0513 90.0 90.0 90.0 , V=294.41
Space group: P-421M (113)

Louisnathan S J , Zeitschrift fur Kristallographie , 131 (1970) p.314-321, The crystal structure of synthetic soda melilite, CaNaAlSi2O7, Locality: synthetic