data_global
_chemical_name_mineral 'Hambergite'
loop_
_publ_author_name
'Burns P C'
'Novak M'
'Hawthorne F C'
_journal_name_full 'The Canadian Mineralogist'
_journal_volume 33 
_journal_year 1995
_journal_page_first 1205
_journal_page_last 1213
_publ_section_title
;
 Fluorine-hydroxyl variation in hambergite: A crystal-structure study
 Note: sample HM2
;
_database_code_amcsd 0005471
_chemical_compound_source 'Susice'
_chemical_formula_sum 'Be2 B H O4'
_cell_length_a 9.754
_cell_length_b 12.231
_cell_length_c 4.4340
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 528.981
_exptl_crystal_density_diffrn      2.357
_symmetry_space_group_name_H-M 'P b c a'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '1/2+x,y,1/2-z'
  '1/2-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
Be1   0.00280   0.18870   0.26320   0.00760
Be2   0.23740   0.06750   0.27730   0.00770
B   0.10630   0.10740   0.77390   0.00670
H   0.81600   0.21400   0.07700   0.02000
O1   0.03770   0.18790   0.62010   0.00780
O2   0.10170   0.10320   0.08300   0.00760
O3   0.18700   0.03460   0.61770   0.00780
O4   0.34090   0.17160   0.29500   0.01030