data_global
_chemical_name_mineral 'Anthophyllite'
loop_
_publ_author_name
'Warren B'
'Modell D'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 75 
_journal_year 1930
_journal_page_first 161
_journal_page_last 179
_publ_section_title
;
 The structure of Anthophyllite H2 Mg7 (Si O3)8
 _cod_database_code 1010935
;
_database_code_amcsd 0017657
_chemical_formula_sum 'Mg7 Si8 O24'
_cell_length_a 18.5
_cell_length_b 17.89999
_cell_length_c 5.27
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 1745.160
_exptl_crystal_density_diffrn      2.964
_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
Mg1   0.13000   0.17000   0.38000
Mg2   0.13000   0.08000  -0.13000
Mg3   0.13000  -0.02000   0.38000
Mg4   0.13000   0.25000  -0.13000
Si1   0.03000  -0.18000   0.29000
Si2   0.03000  -0.08000  -0.21000
Si3   0.22000  -0.08000   0.04000
Si4   0.22000  -0.18000  -0.46000
O1   0.06000   0.07000   0.20000
O2   0.06000   0.18000  -0.30000
O3   0.06000  -0.25000   0.20000
O4   0.06000   0.25000   0.20000
O5   0.06000   0.00000  -0.30000
O6   0.05000  -0.13000   0.05000
O7   0.05000  -0.13000  -0.46000
O8   0.19000   0.18000   0.05000
O9   0.19000   0.07000  -0.44000
O10   0.19000   0.00000   0.05000
O11   0.19000  -0.25000   0.45000
O12   0.19000   0.25000  -0.45000
O13   0.20000  -0.13000   0.30000
O14   0.20000  -0.13000  -0.20000