data_global
_chemical_name_mineral 'Burbankite'
loop_
_publ_author_name
'Belovitskaya Yu V'
'Pekov I V'
'Kabalov Yu K'
_journal_name_full 'Crystallography Reports'
_journal_volume 45 
_journal_year 2000
_journal_page_first 26
_journal_page_last 29
_publ_section_title
;
 Refinement of the crystal structures of low-rare-earth
 and "typical" burbankites by the Rietveld method
 Sample: B-108
 Note: x02 adjusted to satisfy symmetry constraints
;
_database_code_amcsd 0012365
_chemical_compound_source 'Khibiny Massif, Kola Peninsula, Russia'
_chemical_formula_sum 'Na2.184 Ca.834 Y.03 Sr1.899 Ba.318 Ce.222 La.114 Nd.048 Pr.018 C5 O15'
_cell_length_a 10.5313
_cell_length_b 10.5313
_cell_length_c 6.4829
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 622.679
_exptl_crystal_density_diffrn      3.482
_symmetry_space_group_name_H-M 'P 63 m c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  'y,-x+y,1/2+z'
  '-x+y,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
NaA   0.52370   0.47630   0.31900   0.72800   0.02153
CaA   0.52370   0.47630   0.31900   0.23100   0.02153
YA   0.52370   0.47630   0.31900   0.01000   0.02153
SrB   0.84100   0.15900   0.00000   0.63300   0.01115
BaB   0.84100   0.15900   0.00000   0.10600   0.01115
CeB   0.84100   0.15900   0.00000   0.07400   0.01115
LaB   0.84100   0.15900   0.00000   0.03800   0.01115
NdB   0.84100   0.15900   0.00000   0.01600   0.01115
PrB   0.84100   0.15900   0.00000   0.00600   0.01115
CaB   0.84100   0.15900   0.00000   0.04700   0.01115
C1   0.79900   0.20100   0.53000   1.00000   0.03420
C2   0.00000   0.00000   0.85000   1.00000   0.02533
C3   0.33333   0.66667   0.49000   1.00000   0.02533
O1   0.37600   0.08800   0.62800   1.00000   0.02026
O2   0.93000   0.07000   0.35200   1.00000   0.03673
O3   0.40600   0.59400   0.49000   1.00000   0.02153
O4   0.77000   0.23000   0.35800   1.00000   0.03926
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
NaA 0.02528 0.02528 0.02342 0.00000 0.00899 -0.00899
CaA 0.02528 0.02528 0.02342 0.00000 0.00899 -0.00899
YA 0.02528 0.02528 0.02342 0.00000 0.00899 -0.00899
SrB 0.00885 0.00885 0.01938 0.00421 0.00300 -0.00300
BaB 0.00885 0.00885 0.01938 0.00421 0.00300 -0.00300
CeB 0.00885 0.00885 0.01938 0.00421 0.00300 -0.00300
LaB 0.00885 0.00885 0.01938 0.00421 0.00300 -0.00300
NdB 0.00885 0.00885 0.01938 0.00421 0.00300 -0.00300
PrB 0.00885 0.00885 0.01938 0.00421 0.00300 -0.00300
CaB 0.00885 0.00885 0.01938 0.00421 0.00300 -0.00300