data_global
_amcsd_formula_title 'La3Ga5SiO14'
loop_
_publ_author_name
'Belokoneva E L'
'Stefanovich S Y'
'Pisarevskii Y V'
'Mosunov A V'
_journal_name_full 'Russian Journal of Inorganic Chemistry'
_journal_volume 45 
_journal_year 2000
_journal_page_first 1642
_journal_page_last 1651
_publ_section_title
;
 Refined structures of La3Ga5SiO14 and Pb3Ga2Ge4O14 and the crystal-chemical regularities
 in the structure and properties of compounds of the langasite family
;
_database_code_amcsd 0015403
_chemical_formula_sum 'La3 Ga5 Si O14'
_cell_length_a 8.176
_cell_length_b 8.176
_cell_length_c 5.108
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 295.708
_exptl_crystal_density_diffrn      5.713
_symmetry_space_group_name_H-M 'P 3 2 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'y,x,-z'
  '-y,x-y,z'
  '-x,-x+y,-z'
  '-x+y,-x,z'
  'x-y,-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
La   0.41874   0.00000   0.00000   1.00000   8.54897
Ga1   0.00000   0.00000   0.00000   1.00000   0.01203
Ga2   0.33333   0.66667   0.46820   0.50000   0.00709
Si2   0.33333   0.66667   0.46820   0.50000   0.00709
Ga3   0.76530   0.00000   0.50000   1.00000   0.00925
O1   0.33333   0.66667   0.80300   1.00000   0.01773
O2   0.46520   0.31160   0.68400   1.00000   0.02026
O3   0.22110   0.08010   0.23700   1.00000   0.02153