data_9000148
_chemical_name 'Cheralite'
loop_
_publ_author_name
'Finney J J'
'Rao N N'
_journal_name_full "American Mineralogist"
_journal_volume 52
_journal_year 1967
_journal_page_first 13
_journal_page_last 19
_publ_section_title
;
 The crystal structure of cheralite
;
_chemical_formula_sum '(Ce.15 La.14 Th.33 Ca.32 Pb.01 U.05) (P.96 Si.04) O4'
_cell_length_a 6.717
_cell_length_b 6.920
_cell_length_c 6.434
_cell_angle_alpha 90
_cell_angle_beta 103.83
_cell_angle_gamma 90
_cell_volume 290.393
_symmetry_space_group_name_H-M 'P 1 21/n 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,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_Uiso_or_equiv
Ce   0.21980   0.15960   0.39910   0.15000   0.01368
La   0.21980   0.15960   0.39910   0.14000   0.01368
Th   0.21980   0.15960   0.39910   0.33000   0.01368
Ca   0.21980   0.15960   0.39910   0.32000   0.01368
Pb   0.21980   0.15960   0.39910   0.01000   0.01368
U   0.21980   0.15960   0.39910   0.05000   0.01368
P   0.19600   0.16300   0.88580   0.96000   0.01051
Si   0.19600   0.16300   0.88580   0.04000   0.01051
O1   0.24730   0.50640   0.44260   1.00000   0.03242
O2   0.02380   0.10440   0.69060   1.00000   0.02330
O3   0.37400   0.22210   0.78980   1.00000   0.01976
O4   0.11140   0.33370  -0.00110   1.00000   0.02444