data_global
_chemical_name_mineral 'Rontgenite-(Ce)'
loop_
_publ_author_name
'Donnay G'
'Donnay J D H'
_journal_name_full 'American Mineralogist'
_journal_volume 38
_journal_year 1953
_journal_page_first 932
_journal_page_last 963
_publ_section_title
;
 The crystallography of bastnaesite, parasite, roentgenite, and synchisite
;
_database_code_amcsd 61
_chemical_formula_sum 'Ce3 Ca2 C O3 F3'
_cell_length_a 7.13
_cell_length_b 7.13
_cell_length_c 69.4
_cell_angle_alpha 90.0
_cell_angle_beta 90.0
_cell_angle_gamma 120.0
_cell_volume 3055.408
_exptl_crystal_density_diffrn  3.02
_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'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Ce1   0.333333  0.0  0.0
Ce2   0.333333  0.0  0.131
Ce3   0.333333  0.0  0.263
Ca1   0.333333  0.0  0.066
Ca2   0.333333  0.0  0.197
C   0.245  0.333333  0.298
O1   0.067  0.333333  0.298
O2   0.333333  0.333333  0.282
O3   0.333333  0.333333  0.314
F1   0.0  0.0  0.0
F2   0.0  0.0  0.333333
F3   0.0  0.0  0.666667
F4   0.0  0.0  0.131
F5   0.0  0.0  0.464
F6   0.0  0.0  0.798
F7   0.0  0.0  0.263
F8   0.0  0.0  0.596
F9   0.0  0.0  0.93