Formula: Ca3.72 Mn3.42 Y.12 Ce.39 La.24 Fe1.05 Nb.79 Si25.33 Na13.35 Nd.09 K.24 Sr.12 Zr2.76 Ti.12 O76.7 Cl.4 H1.58
Name: Kentbrooksite
Unit cell: 14.1854 14.1854 30.101 90.0 90.0 120.0 , V=5245.59
Space group: R3M (160)

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: #4, Note: additional sites with low but unreported occupancies excluded