data_global
_amcsd_formula_title 'Ca2Ce8(SiO4)6O2'
loop_
_publ_author_name
'Skakle J M S'
'Dickson C L'
'Glasser F P'
_journal_name_full 'Powder Diffraction'
_journal_volume 15 
_journal_year 2000
_journal_page_first 234
_journal_page_last 238
_publ_section_title
;
 The crystal structures of CeSiO4 and Ca2Ce8(SiO4)6O2
;
_database_code_amcsd 0015319
_chemical_compound_source 'Synthetic'
_chemical_formula_sum '(Ca1.011 Ce3.989) Si3 O13'
_cell_length_a 9.4343
_cell_length_b 9.4343
_cell_length_c 6.8885
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 530.976
_exptl_crystal_density_diffrn      5.577
_symmetry_space_group_name_H-M 'P 63/m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x+y,-x,1/2-z'
  'x-y,x,1/2+z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x-y,x,-z'
  '-x+y,-x,z'
  '-y,x-y,1/2-z'
  'y,-x+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_U_iso_or_equiv
Ca1   0.33333   0.66667  -0.00380   0.49800   0.05200
Ce1   0.33333   0.66667  -0.00380   0.50200   0.05200
Ce2   0.23380  -0.01080   0.25000   0.99500   0.03020
Ca2   0.23380  -0.01080   0.25000   0.00500   0.03020
Si1   0.40300   0.38000   0.25000   1.00000   0.08200
O1   0.31600   0.46700   0.25000   1.00000   0.04600
O2   0.59700   0.46700   0.25000   1.00000   0.07000
O3   0.34000   0.25200   0.07100   1.00000   0.08300
O4   0.00000   0.00000   0.25000   1.00000   0.08700