AM_Meionite Formula: (Ca3.176 Na.824) (Si7.32 Al4.68) C.834 S.146 O27.084 Name: Meionite Unit cell: 12.16711 12.16711 7.575466 90.0 90.0 90.0 , V=1121.46 Space group: I14/M1 (1)

Antao S M , Hassan I , American Mineralogist , 93 (2008) p.1470-1477, Unusual Al-Si ordering in calcic scapolite, Me79.6, with increasing temperature, T = 25 C (HRPXRD)