data_global
_chemical_name_mineral 'Tantalite-(Mn)'
loop_
_publ_author_name
'dos Santos C A'
'Zawislak L I'
'Kinast E J'
'Antonietti V'
'da Cunha J B M'
_journal_name_full 'Brazilian Journal of Physics'
_journal_volume 31 
_journal_year 2001
_journal_page_first 616
_journal_page_last 631
_publ_section_title
;
 Crystal chemistry and structure of the orthorhombic
 (Fe,Mn)(Ta,Nb)2O6 family of compounds
 Note: Sample Mn0.88Fe0.09Ta1.72Nb0.28O6
;
_database_code_amcsd 0018628
_chemical_compound_source 'Brazil'
_chemical_formula_sum 'Mn.88 Fe.09 (Ta1.72 Nb.28) O6'
_cell_length_a 14.3196
_cell_length_b 5.7413
_cell_length_c 5.0624
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 416.196
_exptl_crystal_density_diffrn      7.766
_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
Mn   0.00000   0.32700   0.25000   0.88000
Fe   0.00000   0.32700   0.25000   0.09000
Ta   0.16180   0.18120   0.74300   0.86000
Nb   0.16180   0.18120   0.74300   0.14000
O1   0.09900   0.10200   0.06700   1.00000
O2   0.41900   0.11500   0.07200   1.00000
O3   0.76900   0.12600   0.09900   1.00000