data_global
_chemical_name_mineral 'Britholite-(Y)'
loop_
_publ_author_name
'Noe D C'
'Hughes J M'
'Mariano A N'
'Drexler J W'
'Kato A'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 206 
_journal_year 1993
_journal_page_first 233
_journal_page_last 246
_publ_section_title
;
 The crystal structure of monoclinic britholite-(Ce) and britholite-(Y)
 Note: unannealed sample
;
_database_code_amcsd 0011044
_chemical_compound_source 'Suishoyama, Japan'
_chemical_formula_sum 'Y4.48 Lu.32 Ca.2 Si3 O12.07 (F.93 H.07)'
_cell_length_a 9.4216
_cell_length_b 9.4138
_cell_length_c 6.7639
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120.0284
_cell_volume 519.389
_exptl_crystal_density_diffrn      4.843
_symmetry_space_group_name_H-M 'P 1 1 21'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-y,1/2+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
Y1a   0.33380   0.66620   0.00450   0.88000   0.03331
Lu1a   0.33380   0.66620   0.00450   0.12000   0.03331
Y1b   0.33290   0.66700   0.50780   0.80000   0.01102
Ca1b   0.33290   0.66700   0.50780   0.20000   0.01102
Y2a   0.99470   0.24220   0.25900   0.93000   0.02267
Lu2a   0.99470   0.24220   0.25900   0.07000   0.02267
Y2b   0.24230   0.24730   0.75700   0.94000   0.02216
Lu2b   0.24230   0.24730   0.75700   0.06000   0.02216
Y2c   0.24730   0.00500   0.25700   0.93000   0.02343
Lu2c   0.24730   0.00500   0.25700   0.07000   0.02343
Si1   0.02600   0.62700   0.25000   1.00000   0.01279
Si2   0.37270   0.39920   0.27400   1.00000   0.01406
Si3   0.60100   0.97380   0.25000   1.00000   0.01418
O1a   0.83200   0.50700   0.25900   1.00000   0.03040
O1b   0.49100   0.32200   0.27500   1.00000   0.03420
O1c   0.67500   0.16900   0.25500   1.00000   0.03040
O2a   0.40300   0.87040   0.23800   1.00000   0.02026
O2b   0.46800   0.59600   0.23600   1.00000   0.01773
O2c   0.13000   0.53360   0.28800   1.00000   0.02280
O3a   0.62800   0.89600   0.06200   1.00000   0.02280
O3b   0.68600   0.92500   0.44200   1.00000   0.02913
O3c   0.26600   0.36700   0.06100   1.00000   0.01900
O3d   0.23700   0.31000   0.43800   1.00000   0.03926
O3e   0.07500   0.76100   0.08500   1.00000   0.02913
O3f   0.10200   0.73300   0.46800   1.00000   0.02406
F   0.00000   0.99700   0.23100   0.93000   0.06713
O-H   0.00000   0.99700   0.23100   0.07000   0.06713