data_9013066
_publ_section_title
;
 The crystal structure of liberite
;
_journal_name_full               'Kexue Tongbao'
_journal_page_first              425
_journal_page_last               428
_journal_volume                  17
_journal_year                    1966
_chemical_formula_sum            'Be Li2 O4 Si'
_chemical_name_mineral           Liberite
_space_group_IT_number           7
_symmetry_space_group_name_Hall  'P -2yac'
_symmetry_space_group_name_H-M   'P 1 n 1'
_cell_angle_alpha                90
_cell_angle_beta                 90.33
_cell_angle_gamma                90
_cell_length_a                   4.68
_cell_length_b                   4.95
_cell_length_c                   6.13
_cell_volume                     142.005
_exptl_crystal_density_diffrn    2.689
_[local]_cod_chemical_formula_sum_orig 'Li2 Be Si O4'
_cod_database_code               9013066
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,-y,1/2+z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Li1 0.00000 0.16200 0.56000
Li2 0.50000 0.32500 0.73500
Be 0.52000 0.33000 0.24500
Si 0.00000 0.17000 0.00000
O1 0.35500 0.16000 0.05000
O2 0.42000 0.15000 0.45500
O3 0.42000 0.65000 0.23500
O4 0.84500 0.34500 0.20500
