data_global
_chemical_name_mineral 'Magnesiohogbomite-2N4S'
loop_
_publ_author_name
'Hejny C'
'Armbruster T'
_journal_name_full 'American Mineralogist'
_journal_volume 87 
_journal_year 2002
_journal_page_first 277
_journal_page_last 292
_publ_section_title
;
 Polysomatism in hogbomite: The crystal structures of 10T, 12H, 14T and 24R polysomes
 Note: Data represents a model, not experiment
 Note: Coordinates of M9, M11, O11,O12, H have been altered
 according to Shimura et al (2012)
 Sample: polytype 12H
;
_database_code_amcsd 0002755
_chemical_formula_sum 'Mg4 Al12 Ti O24 H'
_cell_length_a 5.7
_cell_length_b 5.7
_cell_length_c 27.6
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 776.586
_exptl_crystal_density_diffrn      3.652
_symmetry_space_group_name_H-M 'P 63 m c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  'y,-x+y,1/2+z'
  '-x+y,y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Mg1   0.00000   0.00000   0.02083
Al2   0.66667   0.33333   0.04167
Mg3   0.33333   0.66667   0.06250
Al4   0.83333   0.66667   0.12500
Mg5   0.33333   0.66667   0.18750
Al6   0.00000   0.00000   0.20833
Mg7   0.66667   0.33333   0.22917
Al8   0.16667   0.83333   0.29167
Ti9   0.66667   0.33333   0.37500
Al10   0.00000   0.00000   0.39583
Al11   0.50000   0.50000   0.45833
O1   0.33333   0.16667   0.00000
O2   0.33333   0.66667   0.00000
O3   0.00000   0.00000   0.08333
O4   0.00000   0.50000   0.08333
O5   0.66667   0.33333   0.16667
O6   0.66667   0.83333   0.16667
O7   0.33333   0.16667   0.25000
O8   0.33333   0.66667   0.25000
O9   0.00000   0.00000   0.33333
O10   0.00000   0.50000   0.33333
O11   0.33333   0.66667   0.41667
O12   0.33333   0.16667   0.41667
H   0.33333   0.66667   0.38000