data_global
_chemical_name_mineral 'Geikielite'
loop_
_publ_author_name
'Liferovich R P'
'Mitchell R H'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 32 
_journal_year 2005
_journal_page_first 442
_journal_page_last 449
_publ_section_title
;
 Rhombohedral ilmenite group nickel titanates with Zn, Mg, and Mn:
 synthesis and crystal structures
;
_database_code_amcsd 0008980
_chemical_formula_sum '(Ni.333 Zn.333 Mg.333) Ti O3'
_cell_length_a 5.0544
_cell_length_b 5.0544
_cell_length_c 13.8737
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 306.946
_exptl_crystal_density_diffrn      4.718
_symmetry_space_group_name_H-M 'R -3'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'y,-x+y,-z'
  '2/3+y,1/3-x+y,1/3-z'
  '1/3+y,2/3-x+y,2/3-z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
  '-x,-y,-z'
  '2/3-x,1/3-y,1/3-z'
  '1/3-x,2/3-y,2/3-z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  'x-y,x,-z'
  '2/3+x-y,1/3+x,1/3-z'
  '1/3+x-y,2/3+x,2/3-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
NiA   0.00000   0.00000   0.35550   0.33333   0.00722
ZnA   0.00000   0.00000   0.35550   0.33333   0.00722
MgA   0.00000   0.00000   0.35550   0.33333   0.00722
TiB   0.00000   0.00000   0.14520   1.00000   0.00456
O1   0.31880   0.01970   0.24420   1.00000   0.00253