data_global
_chemical_name_mineral 'Celadonite'
loop_
_publ_author_name
'Drits V A'
'Zviagina B B'
'McCarty D K'
'Salyn A L'
_journal_name_full 'American Mineralogist'
_journal_volume 95 
_journal_year 2010
_journal_page_first 348
_journal_page_last 361
_publ_section_title
;
 Factors responsible for crystal-chemical variations in the solid solutions
 from illite to aluminoceladonite and from glauconite to celadonite
 Sample Name: TAIH
;
_database_code_amcsd 0005024
_chemical_compound_source 'Taiheizan, Akita Prefecture, Japan'
_chemical_formula_sum 'K Al2 Si4 O12 H2'
_cell_length_a 5.227
_cell_length_b 9.052
_cell_length_c 10.153
_cell_angle_alpha 90
_cell_angle_beta 100.53
_cell_angle_gamma 90
_cell_volume 472.297
_exptl_crystal_density_diffrn      2.809
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
K   0.00000   0.50000   0.50000
Al   0.50000   0.16670   0.00000
Si   0.42090   0.33240   0.27410
O1   0.36160   0.32430   0.11240
O2   0.47090   0.50000   0.33150
O3   0.68360   0.24060   0.33620
O-H   0.40760   0.00000   0.11100