data_global
_chemical_name_mineral 'Spodumene'
loop_
_publ_author_name
'Warren B'
'Biscoe J'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 80 
_journal_year 1931
_journal_page_first 391
_journal_page_last 401
_publ_section_title
;
 The crystal structure of monoclinic pyroxenes
 _cod_database_code 1011191
;
_database_code_amcsd 0018064
_chemical_formula_sum 'Li Al Si2 O6'
_cell_length_a 9.5
_cell_length_b 8.3
_cell_length_c 5.24
_cell_angle_alpha 90
_cell_angle_beta 69.67
_cell_angle_gamma 90
_cell_volume 387.436
_exptl_crystal_density_diffrn      3.190
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-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
Li1   0.00000  -0.31000   0.25000
Al1   0.00000   0.09000   0.25000
Si1   0.21000   0.41000   0.25000
O1   0.39000   0.41000   0.14000
O2   0.13000   0.25000   0.32000
O3   0.14000   0.49000   0.00000