data_global _chemical_name_mineral 'Nastrophite' loop_ _publ_author_name 'Baturin S V' 'Malinovskii Y A' 'Belov N V' _journal_name_full 'Soviet Physics Doklady' _journal_volume 26 _journal_year 1981 _journal_page_first 1023 _journal_page_last 1026 _publ_section_title ; The crystal structure of nastrophite Na(Sr,Ba)[PO4]*9H2O ; _database_code_amcsd 0015610 _chemical_formula_sum 'Na (Sr.94 Ba.03 Ca.03) P O13.001 H18' _cell_length_a 10.559 _cell_length_b 10.559 _cell_length_c 10.559 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 1177.249 _exptl_crystal_density_diffrn 2.075 _symmetry_space_group_name_H-M 'P 21 3' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2-z,-x,1/2+y' '-z,1/2+x,1/2-y' '1/2+z,1/2-x,-y' 'z,x,y' '1/2+y,1/2-z,-x' '1/2-y,-z,1/2+x' '-y,1/2+z,1/2-x' 'y,z,x' '-x,1/2+y,1/2-z' '1/2+x,1/2-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 _atom_site_occupancy _atom_site_U_iso_or_equiv Na 0.67650 0.67650 0.67650 1.00000 0.03166 Sr 0.05330 0.05330 0.05330 0.94000 0.01900 Ba 0.05330 0.05330 0.05330 0.03000 0.01900 Ca 0.05330 0.05330 0.05330 0.03000 0.01900 P 0.42430 0.42430 0.42430 1.00000 0.01773 O4 0.34020 0.34020 0.34020 0.44000 0.04179 O5 0.55440 0.44720 0.35950 0.44000 0.03040 O6 0.55730 0.37800 0.47680 0.27000 0.03040 O7 0.51890 0.31420 0.39820 0.25000 0.03040 O8 0.38500 0.41000 0.56000 0.04000 ? O9 0.31000 0.39000 0.34000 0.18700 ? Ow1 0.39910 0.08350 0.34640 1.00000 0.03420 Ow2 0.28920 0.13320 0.04660 1.00000 0.03166 Ow3 0.59940 0.29100 0.14990 1.00000 0.03293 H1 0.39000 0.18000 0.38000 1.00000 ? H2 0.43000 0.09000 0.28000 1.00000 ? H3 0.34000 0.09000 0.08000 1.00000 ? H4 0.33000 0.23000 0.06000 1.00000 ? H5 0.57000 0.21000 0.14000 1.00000 ? H6 0.54000 0.33000 0.22000 1.00000 ? 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 Na 0.03050 0.03050 0.03050 -0.00452 -0.00452 -0.00452 Sr 0.01864 0.01864 0.01864 0.00000 0.00000 0.00000 Ba 0.01864 0.01864 0.01864 0.00000 0.00000 0.00000 Ca 0.01864 0.01864 0.01864 0.00000 0.00000 0.00000 P 0.01807 0.01807 0.01807 -0.00395 -0.00395 -0.00395 Ow1 0.04010 0.03276 0.02881 -0.00226 -0.00452 -0.00508 Ow2 0.02429 0.04293 0.03445 -0.00621 -0.00226 0.00621 Ow3 0.03502 0.03107 0.03050 0.00734 0.00847 0.00791