MnGeSr Pearson W B Zeitschrift fur Kristallographie 171 (1985) 23-39 The Cu2Sb and related structures _database_code_amcsd 0010918 4.40 4.40 7.52 90 90 90 P4/nmm atom x y z Mn 0 0 0 Sr .5 0 .6665 Ge .5 0 .2056