AM_Ca5Sr5TiOGeO4 Formula: Sr.492 Ca.507 Ti Ge O5 Name: Ca.5Sr.5TiOGeO4 Unit cell: 7.1779 8.9752 6.7105 90.0 113.658 90.0 , V=395.98 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: Sr50