data_global
_chemical_name_mineral 'Huttonite'
loop_
_publ_author_name
'Taylor M'
'Ewing R C'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 34 
_journal_year 1978
_journal_page_first 1074
_journal_page_last 1079
_publ_section_title
;
 The crystal structure of the ThSiO4 polymorphs: huttonite and thorite
;
_database_code_amcsd 0009634
_chemical_compound_source 'Synthetic'
_chemical_formula_sum 'Th Si O4'
_cell_length_a 6.784
_cell_length_b 6.974
_cell_length_c 6.500
_cell_angle_alpha 90
_cell_angle_beta 104.92
_cell_angle_gamma 90
_cell_volume 297.158
_exptl_crystal_density_diffrn      7.245
_symmetry_space_group_name_H-M 'P 1 21/n 1'
loop_
_space_group_symop_operation_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_U_iso_or_equiv
Th   0.28280   0.15500   0.09880   0.00469
Si   0.30200   0.16160   0.61170   0.00583
O1   0.39000   0.33880   0.49670   0.00697
O2   0.48030   0.10600   0.82340   0.00621
O3   0.12160   0.21220   0.72450   0.00697
O4   0.24510   0.49760   0.06260   0.01077
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
Th 0.00631 0.00394 0.00360 -0.00023 0.00125 0.00067