AM_Katayamalite Formula: (K.89 Na.11) Li3 Ca7 (Ti1.95 Fe.05) Si12 O37.76 (F.24 H1.76) Name: Katayamalite Unit cell: 9.721 16.923 19.942 91.43 104.15 89.94 , V=3180.06 Space group: C-1 (2)

Kato T , Murakami N , Mineralogical Journal , 12 (1985) p.206-217, The crystal structure of katayamalite, Locality: Iwagi Islet, Ehime Prefecture, Japan