
data_a

_diffrn_radiation_probe  x-ray
_diffrn_measurement_device_type
;
D8 ADVANCE Bruker
;
_pd_spec_mount_mode reflection
_pd_meas_scan_method step
 loop_
_diffrn_radiation_wavelength
_diffrn_radiation_wavelength_wt
 1.5406    1.0000
 1.5443    0.5000
_diffrn_radiation_type
;
 Cu K\a~1~~2~
;
_diffrn_radiation_monochromator none

_chemical_name_mineral
;
;

_symmetry_space_group_name_H-M Ia-3d
_symmetry_cell_setting cubic
_symmetry_space_group_name_hall 
;
-I 4bd 2c 3
;

_cell_length_a  12.058912(96)
_cell_length_b  12.058912(96)
_cell_length_c  12.058912(96)
_cell_angle_alpha 90
_cell_angle_beta  90
_cell_angle_gamma 90
_cell_volume 1753.575(42)
_chemical_formula_moiety
;
Al24 Ce0.48 Mg8 O96 Si8 Y23.52
;
_chemical_formula_sum
;
Al24 Ce0.48 Mg8 O96 Si8 Y23.52
;

_chemical_formula_weight  4761.14
_cell_formula_units_Z 1
_exptl_crystal_density_diffrn  4.508717(17)

_exptl_absorpt_coefficient_mu  33.683

_cell_measurement_temperature  300
_diffrn_ambient_temperature  300


_pd_char_colour
;
colourless
;

_cell_measurement_reflns_used 104
_cell_measurement_theta_min 7.5
_cell_measurement_theta_max 60
_pd_proc_number_of_points 5250
_pd_meas_2theta_range_min 7.5
_pd_meas_2theta_range_max 60
_pd_meas_2theta_range_inc 0.02

_pd_proc_ls_profile_function PearsonVII
_pd_proc_ls_pref_orient_corr
;
no preferred orientation
;

_refine_ls_shift/su_max  0.01000
_refine_ls_R_I_factor 1.96
_pd_proc_ls_prof_wR_factor 14.041
_pd_proc_ls_prof_R_factor 10.645
_pd_proc_ls_prof_wR_expected 8.764
_refine_ls_goodness_of_fit_all 1.602
loop_
_symmetry_equiv_pos_as_xyz
	'x, y, z'
	'-x, -y, -z'
	'-x, -y+1/2, z'
	'-x, y, z+1/2'
	'-x, y+1/2, -z+1/2'
	'-x+1/4, -z+1/4, -y+1/4'
	'-x+1/4, -z-1/4, y-1/4'
	'-x+1/4, z+1/4, -y-1/4'
	'-x+1/4, z-1/4, y+1/4'
	'-x+1/2, -y, z+1/2'
	'-x+1/2, -y+1/2, -z+1/2'
	'-x+1/2, y, -z'
	'-x+1/2, y+1/2, z'
	'-x-1/4, -z+1/4, y+1/4'
	'-x-1/4, -z-1/4, -y-1/4'
	'-x-1/4, z+1/4, y-1/4'
	'-x-1/4, z-1/4, -y+1/4'
	'-y, -z, -x'
	'-y, -z+1/2, x'
	'-y, z, x+1/2'
	'-y, z+1/2, -x+1/2'
	'-y+1/4, -x+1/4, -z+1/4'
	'-y+1/4, -x-1/4, z-1/4'
	'-y+1/4, x+1/4, -z-1/4'
	'-y+1/4, x-1/4, z+1/4'
	'-y+1/2, -z, x+1/2'
	'-y+1/2, -z+1/2, -x+1/2'
	'-y+1/2, z, -x'
	'-y+1/2, z+1/2, x'
	'-y-1/4, -x+1/4, z+1/4'
	'-y-1/4, -x-1/4, -z-1/4'
	'-y-1/4, x+1/4, z-1/4'
	'-y-1/4, x-1/4, -z+1/4'
	'-z, -x, -y'
	'-z, -x+1/2, y'
	'-z, x, y+1/2'
	'-z, x+1/2, -y+1/2'
	'-z+1/4, -y+1/4, -x+1/4'
	'-z+1/4, -y-1/4, x-1/4'
	'-z+1/4, y+1/4, -x-1/4'
	'-z+1/4, y-1/4, x+1/4'
	'-z+1/2, -x, y+1/2'
	'-z+1/2, -x+1/2, -y+1/2'
	'-z+1/2, x, -y'
	'-z+1/2, x+1/2, y'
	'-z-1/4, -y+1/4, x+1/4'
	'-z-1/4, -y-1/4, -x-1/4'
	'-z-1/4, y+1/4, x-1/4'
	'-z-1/4, y-1/4, -x+1/4'
	'z, -x, -y+1/2'
	'z, -x+1/2, y+1/2'
	'z, x, y'
	'z, x+1/2, -y'
	'z+1/4, -y+1/4, x-1/4'
	'z+1/4, -y-1/4, -x+1/4'
	'z+1/4, y+1/4, x+1/4'
	'z+1/4, y-1/4, -x-1/4'
	'z+1/2, -x, y'
	'z+1/2, -x+1/2, -y'
	'z+1/2, x, -y+1/2'
	'z+1/2, x+1/2, y+1/2'
	'z-1/4, -y+1/4, -x-1/4'
	'z-1/4, -y-1/4, x+1/4'
	'z-1/4, y+1/4, -x+1/4'
	'z-1/4, y-1/4, x-1/4'
	'y, -z, -x+1/2'
	'y, -z+1/2, x+1/2'
	'y, z, x'
	'y, z+1/2, -x'
	'y+1/4, -x+1/4, z-1/4'
	'y+1/4, -x-1/4, -z+1/4'
	'y+1/4, x+1/4, z+1/4'
	'y+1/4, x-1/4, -z-1/4'
	'y+1/2, -z, x'
	'y+1/2, -z+1/2, -x'
	'y+1/2, z, -x+1/2'
	'y+1/2, z+1/2, x+1/2'
	'y-1/4, -x+1/4, -z-1/4'
	'y-1/4, -x-1/4, z+1/4'
	'y-1/4, x+1/4, -z+1/4'
	'y-1/4, x-1/4, z-1/4'
	'x, -y, -z+1/2'
	'x, -y+1/2, z+1/2'
	'x, y+1/2, -z'
	'x+1/4, -z+1/4, y-1/4'
	'x+1/4, -z-1/4, -y+1/4'
	'x+1/4, z+1/4, y+1/4'
	'x+1/4, z-1/4, -y-1/4'
	'x+1/2, -y, z'
	'x+1/2, -y+1/2, -z'
	'x+1/2, y, -z+1/2'
	'x+1/2, y+1/2, z+1/2'
	'x-1/4, -z+1/4, -y-1/4'
	'x-1/4, -z-1/4, y+1/4'
	'x-1/4, z+1/4, -y+1/4'
	'x-1/4, z-1/4, y-1/4'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_B_iso_or_equiv
Y Y 0 0.25 0.125 0.98 0.513(57)
Ce Ce 0 0.25 0.125 0.02 0.513(57)
Al1 Al 0 0.25 0.375 0.6666667 0.491(67)
Si1 Si 0 0.25 0.375 0.3333333 0.491(67)
Al2 Al 0 0 0 0.5 0.426(80)
Mg2 Mg 0 0 0 0.5 0.426(80)
O O -0.03263(27) 0.05191(28) 0.15376(23) 1 0.586(91)

loop_
 _geom_bond_atom_site_label_1
 _geom_bond_atom_site_label_2
 _geom_bond_distance
 _geom_bond_site_symmetry_2
Y O 2.4457(34)  .
Y O 2.3134(32) 19_555
Ce O 2.4457(34)  .
Ce O 2.3134(32) 19_555
Al1 O 1.7261(31) 20_555
Si1 O 1.7261(31) 20_555
Al2 O 1.9962(33)  .
Mg2 O 1.9962(33)  .

loop_
 _geom_angle_atom_site_label_1
 _geom_angle_atom_site_label_2
 _geom_angle_atom_site_label_3
 _geom_angle
 _geom_angle_site_symmetry_1
 _geom_angle_site_symmetry_3
O Y O 124.26(22) 1_555 19_555
O Y O 109.54(15) 1_555 22_555
O Y O 72.54(14) 1_555 38_555
O Y O 93.85(11) 1_555 64_555
O Y O 70.74(15) 1_555 68_555
O Y O 72.89(14) 1_555 80_555
O Y O 113.81(16) 19_555 64_555
O Y O 69.6(14) 19_555 68_555
O Ce O 124.26(22) 1_555 19_555
O Ce O 109.54(15) 1_555 22_555
O Ce O 72.54(14) 1_555 38_555
O Ce O 93.85(11) 1_555 64_555
O Ce O 70.74(15) 1_555 68_555
O Ce O 72.89(14) 1_555 80_555
O Ce O 113.81(16) 19_555 64_555
O Ce O 69.6(14) 19_555 68_555
O Al1 O 114.61(20) 20_555 38_555
O Al1 O 99.62(15) 20_555 67_555
O Si1 O 114.61(20) 20_555 38_555
O Si1 O 99.62(15) 20_555 67_555
O Al2 O 92.66(13) 1_555 18_555
O Mg2 O 92.66(13) 1_555 18_555