data_global
_chemical_name_mineral 'Rynersonite'
loop_
_publ_author_name
'Jahnberg L'
_journal_name_full 'Acta Chemica Scandinavica'
_journal_volume 17 
_journal_year 1963
_journal_page_first 2548
_journal_page_last 2559
_publ_section_title
;
 Crystal structure of orthorhombic CaTa2O6
;
_database_code_amcsd 0011896
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Ca Ta2 O6'
_cell_length_a 11.068
_cell_length_b 7.505
_cell_length_c 5.378
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 446.725
_exptl_crystal_density_diffrn      7.404
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-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_U_iso_or_equiv
Ca   0.04200   0.25000   0.54000   0.01267
Ta   0.14120  -0.00560   0.03760   0.01178
O1  -0.02400   0.03500   0.22500 ?
O2   0.21300   0.04900   0.38300   0.00760
O3   0.14600   0.25000  -0.03300   0.04053
O4   0.12200  -0.25000   0.16200   0.01900