data_global
_chemical_name_mineral 'Petalite'
loop_
_publ_author_name
'Ross N L'
'Zhao J'
'Slebodnick C'
'Spencer E C'
'Chakoumakos B C'
_journal_name_full 'American Mineralogist'
_journal_volume 100 
_journal_year 2015
_journal_page_first 714
_journal_page_last 721
_publ_section_title
;
 Petalite under pressure: Elastic behavior and phase stability
 Note: P = 0.89 GPa
;
_database_code_amcsd 0020426
_chemical_compound_source 'Aracuai pegmatite district, Minas Gerais, Brazil'
_chemical_formula_sum 'Li Al Si4 O10'
_cell_length_a 11.1705
_cell_length_b 5.0963
_cell_length_c 11.6569
_cell_angle_alpha 90
_cell_angle_beta 141.1341
_cell_angle_gamma 90
_cell_volume 416.413
_exptl_crystal_density_diffrn      2.443
_symmetry_space_group_name_H-M 'P 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,-y,1/2+z'
  '-x,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_U_iso_or_equiv
Li1   0.50000   0.75100   0.25000   0.02100
Al1   0.50000   0.25500   0.25000   0.00870
Si1   0.78950   0.02100   0.79160   0.00850
Si2   0.79000   0.51880   0.64230   0.00880
O1   0.63350  -0.03250   0.77260   0.01700
O2   0.76800  -0.18380   0.67080   0.01300
O3   0.00000   0.00000   0.00000   0.02570
O4   0.75560   0.31650   0.72000   0.01580
O5   0.00000   0.47060   0.75000   0.02880
O6   0.63610   0.47740   0.42780   0.01120