AM_Rustumite Formula: Ca10 Si5 O20 Cl2 H2 Name: Rustumite Unit cell: 7.62 18.54999 15.51 90.0 104.3 90.0 , V=2124.42 Space group: C12/C1 (15)

Nevskii N N , Ilyukhin V V , Khaui R A , Belov N V , Soviet Physics Doklady , 24 (1979) p.812-814, The crystal structure of rustumite