AM_Na7K3GaSiO4 Formula: Na2.1 K.9 (Ga3 Si3) O12 Name: Na.7K.3GaSiO4 Unit cell: 8.8169 8.8169 8.3873 90.0 90.0 120.0 , V=564.66 Space group: P63 (173)

Barbier J , Liu B , Weber J , European Journal of Mineralogy , 5 (1993) p.297-305, Crystal chemistry of the (Na,K)GaSiO4 system, Note: kalsilite structure