AM_Eudialyte Formula: Na14.19 Ca5.58 Sr.12 K.3 Ce.234 La.096 Mn1.38 Fe1.77 Si25.68 Nb.318 Zr3 O76.256 Cl.684 H1.356 Name: Eudialyte Unit cell: 14.2646 14.2646 30.186 90.0 90.0 120.0 , V=5319.31 Space group: R-3M (166)

Johnsen O , Grice J D , The Canadian Mineralogist , 37 (1999) p.865-891, The crystal chemistry of the eudialyte group, Locality: Mont Saint-Hilaire, Rouville County, Quebec, Canada, Sample: #1, Note: additional sites with low but unreported occupancies excluded