AM_Meionite_15 Formula: (Ca3.248 Na.752) (Si6.84 Al5.16) O26.948 C.668 S.235 Name: Meionite Unit cell: 12.16559 12.16559 7.57446 90.0 90.0 90.0 , V=1121.03 Space group: I14/M1 (1)

Antao S M , Hassan I , Wang J , Lee P L , Toby B H , The Canadian Mineralogist , 46 (2008) p.1501-1509, State-of-the-art high-resolution powder x-ray diffraction (HRPXRD) illustrated, with Rietveld structure refinement of quartz, sodalite, tremolite, and meionite, Locality: Slyudyanka, Siberia, Russia