title  Mn3O4, hausmannite structure from Wycoff 
a  5.75         c  9.42		core	mn2
rmax=7.0    Space  i 41/a m d
atom
! At.type  x        y       z      tag
   Mn     0.0      0.75    0.125   mn1
   Mn     0.0      0.0     0.5     mn2
   O      0.0      0.25    0.375
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