data_global
_chemical_name_mineral 'Aeschynite-(Y)'
loop_
_publ_author_name
'Bonazzi P'
'Menchetti S'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 11 
_journal_year 1999
_journal_page_first 1043
_journal_page_last 1049
_publ_section_title
;
 Crystal chemistry of aeschynite-(Y) from the Western Alps:
 residual electron density on difference-Fourier map
 Sample: VV
;
_database_code_amcsd 0006811
_chemical_compound_source 'western Alps'
_chemical_formula_sum 'Y.65 La.001 Ce.005 Pr.001 Nd.015 Sm.017 Gd.042 Dy.042 Er.023 Yb.018 Th.07 U.04 Ca.01 Fe.03 Ti1.41 Nb.36 Ta.22 W.05 O6'
_cell_length_a 11.031
_cell_length_b 7.448
_cell_length_c 5.188
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 426.240
_exptl_crystal_density_diffrn      5.574
_symmetry_space_group_name_H-M 'P n m a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,y,1/2-z'
  '1/2-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
YA   0.45290   0.25000   0.04020   0.65000   0.01210
LaA   0.45290   0.25000   0.04020   0.00100   0.01210
CeA   0.45290   0.25000   0.04020   0.00500   0.01210
PrA   0.45290   0.25000   0.04020   0.00100   0.01210
NdA   0.45290   0.25000   0.04020   0.01500   0.01210
SmA   0.45290   0.25000   0.04020   0.01700   0.01210
GdA   0.45290   0.25000   0.04020   0.04200   0.01210
DyA   0.45290   0.25000   0.04020   0.04200   0.01210
ErA   0.45290   0.25000   0.04020   0.02300   0.01210
YbA   0.45290   0.25000   0.04020   0.01800   0.01210
ThA   0.45290   0.25000   0.04020   0.07000   0.01210
UA   0.45290   0.25000   0.04020   0.04000   0.01210
CaA   0.45290   0.25000   0.04020   0.01000   0.01210
FeA   0.45290   0.25000   0.04020   0.03000   0.01210
TiB   0.35790   0.50770   0.54360   0.70500   0.01220
NbB   0.35790   0.50770   0.54360   0.18000   0.01220
TaB   0.35790   0.50770   0.54360   0.11000   0.01220
WB   0.35790   0.50770   0.54360   0.00500   0.01220
WC   0.17100   0.25000   0.59500   0.04000   0.01900
O1   0.28860   0.43380   0.88030   1.00000   0.02100
O2   0.52600   0.45550   0.73790   1.00000   0.01900
O3   0.61690   0.25000   0.31750   1.00000   0.01800
O4   0.35480   0.25000   0.43370   1.00000   0.02000