data_global _chemical_name_mineral 'Metavariscite' loop_ _publ_author_name 'Kniep R' 'Mootz D' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 29 _journal_year 1973 _journal_page_first 2292 _journal_page_last 2294 _publ_section_title ; Metavariscite - A redetermination of its crystal structure ; _database_code_amcsd 0009488 _chemical_compound_source 'Utalith Hill, Lucin, Utah, USA' _chemical_formula_sum 'Al P O6 H4' _cell_length_a 5.178 _cell_length_b 9.514 _cell_length_c 8.454 _cell_angle_alpha 90 _cell_angle_beta 90.35 _cell_angle_gamma 90 _cell_volume 416.466 _exptl_crystal_density_diffrn 2.520 _symmetry_space_group_name_H-M 'P 1 21/n 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-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 Al 0.40309 0.32545 0.30626 P -0.09105 0.14688 0.18371 O1 0.16505 0.17902 0.27036 O2 -0.09291 0.21677 0.02094 O3 -0.31481 0.20439 0.28127 O4 -0.11458 -0.01392 0.17227 OW1 0.11617 0.44767 0.32202 OW2 0.40410 0.36239 0.07903 H11 0.13900 0.53000 0.28800 H12 -0.03700 0.43200 0.33100 H21 0.27400 0.33400 0.02300 H22 0.53900 0.36900 0.02300 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 Al 0.00481 0.00608 0.00430 0.00000 0.00000 0.00013 P 0.00405 0.00481 0.00342 0.00013 0.00000 -0.00025 O1 0.00760 0.00937 0.01178 -0.00076 -0.00291 -0.00076 O2 0.01608 0.01051 0.00557 0.00000 0.00089 0.00089 O3 0.00874 0.01279 0.00874 0.00304 0.00279 -0.00051 O4 0.00760 0.00620 0.01140 -0.00013 -0.00101 -0.00038 OW1 0.00722 0.01013 0.03280 0.00038 0.00203 0.00393 OW2 0.01836 0.02014 0.00773 -0.00380 -0.00177 -0.00025 H11 0.01900 0.00886 0.05446 -0.00760 -0.00507 0.00760 H12 0.01900 0.05066 0.08992 0.03040 -0.00203 0.00000 H21 0.03166 0.19378 0.02153 0.04686 0.02406 0.05699 H22 0.07346 0.22164 0.01773 0.11779 0.01393 0.02913