AM_Ca7Sr3TiOGeO4 Formula: Sr.286 Ca.713 Ti Ge O5 Name: Ca.7Sr.3TiOGeO4 Unit cell: 7.1677 8.9408 6.6869 90.0 113.724 90.0 , V=392.32 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: Sr30