data_global
_chemical_name_mineral 'Columbite-(Mn)'
loop_
_publ_author_name
'Tarantino S C'
'Zema M'
_journal_name_full 'American Mineralogist'
_journal_volume 90 
_journal_year 2005
_journal_page_first 1291
_journal_page_last 1300
_publ_section_title
;
 Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution:
 A single-crystal X-ray diffraction study
 Sample: KRA n3p Qm=1 from Kragero, Norway
;
_database_code_amcsd 0003850
_chemical_formula_sum 'Fe.806 Mn.148 Ti.08 Ca.008 Sn.003 Sc.001 Nb1.802 Ta.152 O6'
_cell_length_a 14.4003
_cell_length_b 5.7501
_cell_length_c 5.0784
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 420.508
_exptl_crystal_density_diffrn      5.507
_symmetry_space_group_name_H-M 'P b c n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '1/2+x,1/2+y,1/2-z'
  '1/2-x,1/2-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
FeA   0.00000   0.31956   0.25000   0.80600   0.00740
MnA   0.00000   0.31956   0.25000   0.14800   0.00740
TiA   0.00000   0.31956   0.25000   0.03400   0.00740
CaA   0.00000   0.31956   0.25000   0.00800   0.00740
SnA   0.00000   0.31956   0.25000   0.00300   0.00740
ScA   0.00000   0.31956   0.25000   0.00100   0.00740
NbB   0.16254   0.17972   0.73927   0.90100   0.00560
TaB   0.16254   0.17972   0.73927   0.07600   0.00560
TiB   0.16254   0.17972   0.73927   0.02300   0.00560
O1   0.09818   0.09910   0.05810   1.00000   0.00840
O2   0.41740   0.11640   0.09690   1.00000   0.00920
O3   0.75611   0.12650   0.09000   1.00000   0.00730