AM_Fedorite Formula: Ca4.03 Na4.51 Si16 O41.7 F2 K.8 H10 Name: Fedorite Unit cell: 9.63 9.6392 12.6118 102.422 96.227 119.888 , V=958.54 Space group: P-1 (2)

Mitchell R H , Burns P C , The Canadian Mineralogist , 39 (2001) p.769-777, The structure of fedorite: A re-appraisal, Locality: Turiy complex, Kola Peninsula, Russia