data_global _chemical_name_mineral 'Lazulite' loop_ _publ_author_name 'Giuseppetti G' 'Tadini C' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte' _journal_volume 1983 _journal_year 1983 _journal_page_first 410 _journal_page_last 416 _publ_section_title ; Lazulite, (Mg,Fe)Al2(OH)2(PO4)2: structure refinement and hydrogen bonding ; _database_code_amcsd 0014778 _chemical_compound_source 'Graves Mountain, Lincoln County, Georgia, USA' _chemical_formula_sum '(Mg.866 Fe.134) Al2 P2 O10 H2' _cell_length_a 7.144 _cell_length_b 7.278 _cell_length_c 7.228 _cell_angle_alpha 90 _cell_angle_beta 120.51 _cell_angle_gamma 90 _cell_volume 323.778 _exptl_crystal_density_diffrn 3.143 _symmetry_space_group_name_H-M 'P 1 21/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '-x,1/2+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_occupancy _atom_site_U_iso_or_equiv Mg 0.00000 0.00000 0.00000 0.86600 0.00621 Fe 0.00000 0.00000 0.00000 0.13400 0.00621 Al -0.26740 0.26680 0.00640 1.00000 0.00469 P 0.24800 0.38540 0.24500 1.00000 0.00431 O1 -0.21250 0.01420 0.10600 1.00000 0.00773 O2 -0.28810 0.49980 -0.09300 1.00000 0.00861 O3 0.04360 0.26410 0.12450 1.00000 0.00785 O4 -0.56190 0.24270 -0.12920 1.00000 0.00836 O5 -0.25990 0.14670 -0.24120 1.00000 0.00646 H -0.36200 0.42500 0.20900 1.00000 0.00646 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Mg 0.00672 0.00564 0.00766 0.00068 0.00466 0.00161 Fe 0.00672 0.00564 0.00766 0.00068 0.00466 0.00161 Al 0.00384 0.00483 0.00471 0.00045 0.00175 0.00000 P 0.00365 0.00429 0.00452 -0.00023 0.00175 -0.00023 O1 0.00960 0.00671 0.00923 0.00227 0.00641 0.00138 O2 0.01228 0.00644 0.00943 0.00159 0.00718 0.00092 O3 0.00422 0.00751 0.00982 -0.00250 0.00214 -0.00138 O4 0.00480 0.00912 0.00943 -0.00272 0.00252 -0.00161 O5 0.00614 0.00725 0.00491 -0.00023 0.00214 -0.00138