data_global
_chemical_name_mineral 'Donnayite-(Y)'
loop_
_publ_author_name
'Tjy C T L'
'Pobedimskaya E A'
'Nadezhina T N'
'Khomyakov A P'
_journal_name_full 'Moscow University Geology Bulletin'
_journal_volume 47 
_journal_year 1992
_journal_page_first 60
_journal_page_last 70
_publ_section_title
;
 Polymorphism of donnayite (Na,TR)Sr(CO3)2*H2O
;
_database_code_amcsd 0018482
_chemical_compound_source 'Khibiny alkaline massif'
_chemical_formula_sum 'Na.5 Y.24 Ce.11 La.09 Gd.02 Dy.02 Er.01 Yb.01 Pr.01 Sr.71 Ca.19 Ba.09 C2 O7 H2'
_cell_length_a 5.211
_cell_length_b 5.211
_cell_length_c 18.357
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 431.692
_exptl_crystal_density_diffrn      3.372
_symmetry_space_group_name_H-M 'R 3 m'
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'
  'x,x-y,z'
  '2/3+x,1/3+x-y,1/3+z'
  '1/3+x,2/3+x-y,2/3+z'
  '-y,-x,z'
  '2/3-y,1/3-x,1/3+z'
  '1/3-y,2/3-x,2/3+z'
  '-x+y,y,z'
  '2/3-x+y,1/3+y,1/3+z'
  '1/3-x+y,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
Na   0.00000   0.00000   0.00000   0.49000   0.02368
Y   0.00000   0.00000   0.00000   0.24000   0.02368
Ce   0.00000   0.00000   0.00000   0.11000   0.02368
La   0.00000   0.00000   0.00000   0.09000   0.02368
Gd   0.00000   0.00000   0.00000   0.02000   0.02368
Dy   0.00000   0.00000   0.00000   0.02000   0.02368
Er   0.00000   0.00000   0.00000   0.01000   0.02368
Yb   0.00000   0.00000   0.00000   0.01000   0.02368
Pr   0.00000   0.00000   0.00000   0.01000   0.02368
Sr   0.00000   0.00000   0.79400   0.71000   0.01229
Ca   0.00000   0.00000   0.79400   0.19000   0.01229
Ba   0.00000   0.00000   0.79400   0.09000   0.01229
Na   0.00000   0.00000   0.79400   0.01000   0.01229
C   0.00000   0.00000   0.41600   1.00000   0.01735
O1  -0.14300   0.14300   0.42200   1.00000   0.02153
Wat2   0.16900   0.13900   0.57000   0.16667   0.04686
O2   0.16900   0.13900   0.57000   0.08333   0.04686
C2   0.16900   0.13900   0.57000   0.16667   0.04686
O3   0.08000   0.36100   0.91100   0.25000   0.07092
O4   0.09100   0.11800   0.65300   0.16667   0.01013