O7 P2 Zr Levi G, Peyronel G Zeitschrift fur Kristallographie 92 (1935) 190-209 Struttura Cristallographica del Gruppo Isomorpho (Si,Ti,Zr,Sn,Hf) P2O7 _cod_database_code 1010464 _database_code_amcsd 0017382 8.20 8.20 8.20 90 90 90 Pa3 atom x y z Zr1 0 0 0 O1 .5 .5 .5 O2 .394 .218 .458 P1 .39 .39 .39