Mn4 Nb2 O9
Bertaut E, Corliss L, Forrat F, Aleonard R, Pauthenet R
Journal of Physics and Chemistry of Solids 21 (1961) 234-251
Etude de niobates et tantalates de metaux transition bivalents
_cod_database_code 1008216
_database_code_amcsd 0016154
5.335 5.335 14.32 90 90 120 P-3c1
atom    x    y     z
Nb1     0    0 .3575
Mn1   1/3  2/3 .0181
Mn2   1/3  2/3  .297
O1     .3    0   .25
O2   .334 .295 .0884