data_global
_chemical_name_mineral 'Osumilite'
loop_
_publ_author_name
'Seryotkin Y V'
'Sokol E V'
'Bakakin V V'
'Likhacheva A Y'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 20 
_journal_year 2008
_journal_page_first 191
_journal_page_last 198
_publ_section_title
;
 Pyrometamorphic osumilite: occurrence, paragenesis, and crystal structure as compared to cordierite
;
_database_code_amcsd 0007256
_chemical_compound_source 'South Urals, Russia'
_chemical_formula_sum 'Si10.08 Al4.8 Fe.26 O30 Mg1.78 Mn.04 Ti.04 K.829 Na.104'
_cell_length_a 10.0999
_cell_length_b 10.0999
_cell_length_c 14.3355
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 1266.420
_exptl_crystal_density_diffrn      2.594
_symmetry_space_group_name_H-M 'P 6/m c c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x,x-y,1/2-z'
  '-x+y,-x,-z'
  'x-y,x,z'
  '-y,-x,1/2+z'
  'y,x,1/2-z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x+y,y,1/2-z'
  'x,y,-z'
  '-x,-y,z'
  'x,x-y,1/2+z'
  '-x,-x+y,1/2-z'
  'x-y,x,-z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,x-y,-z'
  'y,-x+y,z'
  '-x+y,y,1/2+z'
  'x-y,-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
SiT1   0.24852   0.35307   0.39220   0.84000   0.01050
AlT1   0.24852   0.35307   0.39220   0.16000   0.01050
AlT2   0.50000   0.50000   0.25000   0.96000   0.01290
FeT2   0.50000   0.50000   0.25000   0.04000   0.01290
O1   0.12200   0.40800   0.00000   1.00000   0.02060
O2   0.21650   0.28510   0.13129   1.00000   0.02540
O3   0.13905   0.49343   0.17921   1.00000   0.01430
MgA   0.33333   0.66667   0.25000   0.89000   0.01210
FeA   0.33333   0.66667   0.25000   0.07000   0.01210
MnA   0.33333   0.66667   0.25000   0.02000   0.01210
TiA   0.33333   0.66667   0.25000   0.02000   0.01210
KC   0.00000   0.00000   0.25000   0.82900   0.03620
NaB   0.33333   0.66667   0.01900   0.02600   0.05000