data_global
_chemical_name_mineral 'Euclase'
loop_
_publ_author_name
'Mrose M E'
'Appleman D E'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 117 
_journal_year 1962
_journal_page_first 16
_journal_page_last 36
_publ_section_title
;
 The crystal structures and crystal chemistry of vayrynenite,
 (Mn,Fe)Be(PO4)(OH), and euclase, AlBe(SiO4)(OH)
;
_database_code_amcsd 0010591
_chemical_compound_source 'Villa Rica, Minas Gerais, Brazil'
_chemical_formula_sum 'Al Be Si O5 H'
_cell_length_a 4.763
_cell_length_b 14.29
_cell_length_c 4.618
_cell_angle_alpha 90
_cell_angle_beta 100.25
_cell_angle_gamma 90
_cell_volume 309.300
_exptl_crystal_density_diffrn      3.116
_symmetry_space_group_name_H-M 'P 1 21/a 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2-y,z'
  '1/2-x,1/2+y,-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
Al   0.24900   0.44470   0.95700   0.00127
Be   0.17600   0.30000   0.47000   0.00583
Si   0.17700   0.10020   0.53900   0.00076
O1   0.38000   0.03210   0.76100   0.00228
O2   0.38000   0.37670   0.65000   0.00266
O3   0.34600   0.20000   0.52000   0.00253
O4   0.10000   0.05290   0.21500   0.00342
O-H   0.15800   0.33240   0.11800   0.00532