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 0000061
_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
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 3055.408
_exptl_crystal_density_diffrn      3.020
_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   0.33333   0.00000   0.00000
Ce2   0.33333   0.00000   0.13100
Ce3   0.33333   0.00000   0.26300
Ca1   0.33333   0.00000   0.06600
Ca2   0.33333   0.00000   0.19700
C   0.24500   0.33333   0.29800
O1   0.06700   0.33333   0.29800
O2   0.33333   0.33333   0.28200
O3   0.33333   0.33333   0.31400
F1   0.00000   0.00000   0.00000
F2   0.00000   0.00000   0.33333
F3   0.00000   0.00000   0.66667
F4   0.00000   0.00000   0.13100
F5   0.00000   0.00000   0.46400
F6   0.00000   0.00000   0.79800
F7   0.00000   0.00000   0.26300
F8   0.00000   0.00000   0.59600
F9   0.00000   0.00000   0.93000