AM_Nepheline_3 Formula: Si Al Na O4 Name: Nepheline Unit cell: 9.995 9.995 24.797 90.0 90.0 120.0 , V=2145.34 Space group: P61 (169)

Kahlenberg V , Bohm H , American Mineralogist , 83 (1998) p.631-637, Crystal structure of hexagonal trinepheline - A new synthetic NaAlSiO4, modification