AM_Bornemanite
Formula: Si4 P Ti2.3 Nb.7 Na5.5 Mn.5 Ba O22
Name: Bornemanite
Unit cell: 5.498 7.12 47.95 90.0 90.0 88.4 , V=1876.31
Space group: I11B (9)

Ferraris G , Belluso E , Gula A , Soboleva S V , Ageeva O A , Borutskii B E , The Canadian Mineralogist , 39 (2001) p.1665-1673, A structure model of the layer titanosilicate bornemanite based on, seidozerite and lomonosovite modules