MnO2 Kondrashev Y D, Zaslavskii A I Izvestiya Akademii Nauk SSSR 15 (1951) 179-186 The structure of the modifications of manganese oxide _database_code_amcsd 0017792 9.815 9.815 2.847 90 90 90 I4/m atom x y z Mn .330 .150 .5 O1 .205 .160 0 O2 .458 .16 0