AM_Latrappite Formula: (Ca.75 Na.25) (Nb.57 Fe.15 Ti.28) O3 Name: Latrappite Unit cell: 5.4479 5.5259 7.7575 90.0 90.0 90.0 , V=233.54 Space group: PBNM (62)

Mitchell R H , Choi J B , Hawthorne F C , McCammon C A , Burns P C , The Canadian Mineralogist , 36 (1998) p.107-116, Latrappite: A re-investigation