AM_Meionite_12 Formula: Na.76 K.04 Ca3.12 (Si6.8 Al5.2) O25.28 Cl.01 S.16 C.32 Name: Meionite Unit cell: 12.1637 12.1637 7.5739 90.0 90.0 90.0 , V=1120.60 Space group: I14/M1 (1)

Sherriff B L , Sokolova E V , Kabalov Y K , Jenkins D M , Kunath-Fandrei G , Goetz S , Jager C , Schneider J , The Canadian Mineralogist , 38 (2000) p.1201-1213, Meionite: Rietveld structure-refinement, Si MAS and Al SATRAS NMR, spectroscopy, and comments on the marialite-meionite series, Note: sample SL-1, Locality: Slyudyanka mineral deposit, eastern Siberia, Russia