AM_Kentbrooksite_2 Formula: Ca3.36 Mn3.78 Y.42 Ce.71 La.58 Fe.75 Al.15 Nb.55 Zr2.95 Ti.2 Si25.11 Na13.93 Nd.138 K.3 Sr.15 Hf.06 O75.752 Cl.269 F1.541 H.192 Name: Kentbrooksite Unit cell: 14.199 14.199 30.139 90.0 90.0 120.0 , V=5262.29 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: Amdrup Fjord, Kangerdlugssuaq intrusion, Eastern Greenland, Sample: #13