data_global
_chemical_name_mineral 'Apophyllite'
loop_
_publ_author_name
'Taylor W'
'Naray-Szabo S'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 77 
_journal_year 1931
_journal_page_first 146
_journal_page_last 159
_publ_section_title
;
 The Structure of Apophyllite
 _cod_database_code 1010937
;
_database_code_amcsd 0017658
_chemical_formula_sum 'F O28 Si8 Ca4 K'
_cell_length_a 9.
_cell_length_b 9.
_cell_length_c 15.8
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1279.800
_exptl_crystal_density_diffrn      2.312
_symmetry_space_group_name_H-M 'P 4/m n c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-y,1/2-x,1/2+z'
  '1/2+y,1/2+x,1/2-z'
  'y,-x,-z'
  '-y,x,z'
  '1/2+x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  'x,y,-z'
  '-x,-y,z'
  '1/2+y,1/2+x,1/2+z'
  '1/2-y,1/2-x,1/2-z'
  '-y,x,-z'
  'y,-x,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
F1   0.00000   0.00000   0.00000
O1   0.36200   0.13800   0.25000
O2   0.08900   0.18400   0.21700
O3   0.28700   0.11700   0.09400
O4   0.23700   0.44500   0.09400
Si1   0.23700   0.09100   0.18800
Ca1   0.12000   0.24300   0.00000
K1   0.00000   0.00000   0.50000