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 HM3
;
_database_code_amcsd 0005472
_chemical_compound_source 'Ctidruzice'
_chemical_formula_sum 'Be2 B H O4'
_cell_length_a 9.678
_cell_length_b 12.313
_cell_length_c 4.439
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 528.974
_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   0.00330   0.18940   0.26320   0.01020
Be2   0.23840   0.06670   0.27980   0.01000
B   0.10770   0.10900   0.77620   0.00990
H   0.80800   0.20500   0.12100   0.02000
O1   0.03750   0.18850   0.62350   0.01040
O2   0.10330   0.10450   0.08570   0.01030
O3   0.18800   0.03630   0.62090   0.01090
O4   0.34420   0.16720   0.29500   0.01400