AM_Malladrite Formula: Na2 Si F6 Name: Malladrite Unit cell: 8.859 8.859 5.038 90.0 90.0 120.0 , V=342.42 Space group: P321 (150)

Zalkin A , Forrester J D , Templeton D H , Acta Crystallographica , 17 (1964) p.1408-1412, The crystal structure of sodium fluorosilicate, Locality: synthetic