AM_Ba3Ta6Si4O26 Formula: Ba3 Ta6 Si4 O26 Name: Ba3Ta6Si4O26 Unit cell: 9.001 9.001 7.734 90.0 90.0 120.0 , V=542.65 Space group: P-62M (189)

Choisnet J , Nguyen N , Groult D , Raveau B , Materials Research Bulletin , 11 (1976) p.887-894, De nouveaux oxydes a reseau forme d octahedres NbO6 (TaO6) et de groupes Si2O7:, Les phases A3Ta6Si4O26 (A = Ba,Sr) et K6M6Si4O26 (M = Nb,Ta)