AM_Ca4Sr6TiOGeO4 Formula: Sr.61 Ca.389 Ti Ge O5 Name: Ca.4Sr.6TiOGeO4 Unit cell: 7.1929 8.9996 6.7295 90.0 113.647 90.0 , V=399.04 Space group: P121/A1 (14)

Ellemann-Olesen R , Malcherek T , Physics and Chemistry of Minerals , 32 (2005) p.531-545, The structure of SrTiOGeO4 and its solid solution with CaTiOGeO4, Note: titanite-type structure, Sample: Sr60