data_global
_chemical_name_mineral 'Manganotantalite'
loop_
_publ_author_name
'Grice J D'
'Ferguson R B'
'Hawthorne F C'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 14 
_journal_year 1976
_journal_page_first 540
_journal_page_last 549
_publ_section_title
;
 The crystal structures of tantalite, ixiolite and wodginite
 from Bernic lake, Manitoba I. Tantalite and ixiolite
;
_database_code_amcsd 0005130
_chemical_compound_source 'Bernic Lake, Manitoba, Canada'
_chemical_formula_sum '(Mn.97 Ti.02 Fe.01) (Ta1.28 Nb.72) O6'
_cell_length_a 14.413
_cell_length_b 5.760
_cell_length_c 5.084
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 422.068
_exptl_crystal_density_diffrn      7.071
_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
Mn   0.00000   0.32200   0.25000   0.97000   0.00798
Ti   0.00000   0.32200   0.25000   0.02000   0.00798
Fe   0.00000   0.32200   0.25000   0.01000   0.00798
Ta   0.16280   0.17700   0.73670   0.64000   0.00811
Nb   0.16280   0.17700   0.73670   0.36000   0.00811
O1   0.09900   0.09400   0.05500   1.00000   0.00507
O2   0.41900   0.11200   0.10800   1.00000   0.01646
O3   0.75800   0.12100   0.09900   1.00000   0.01140