data_global _chemical_name_mineral 'Metahewettite' loop_ _publ_author_name 'Bachmann H G' 'Barnes W H' _journal_name_full 'The Canadian Mineralogist' _journal_volume 7 _journal_year 1962 _journal_page_first 219 _journal_page_last 235 _publ_section_title ; The crystal structure of a sodium-calcium variety of metahewettite Sample: anhydrous ; _database_code_amcsd 0005078 _chemical_compound_source 'Paradox Valley, Montrose County, Coldrado,USA' _chemical_formula_sum 'V3 Na O8' _cell_length_a 12.28 _cell_length_b 3.60 _cell_length_c 8.00 _cell_angle_alpha 90 _cell_angle_beta 96.25 _cell_angle_gamma 90 _cell_volume 351.562 _exptl_crystal_density_diffrn 2.870 _symmetry_space_group_name_H-M 'P 1 21/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,z' '-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 V1 0.07200 0.25000 0.16900 0.03800 V2 0.83000 0.25000 0.13000 0.03800 V3 0.52300 0.25000 0.83000 0.03800 Na 0.31000 0.25000 0.43200 0.03800 O1 0.91700 0.25000 0.90200 0.03800 O2 0.16500 0.25000 0.93800 0.03800 O3 0.47100 0.25000 0.09400 0.03800 O4 0.95700 0.25000 0.26500 0.03800 O5 0.21000 0.25000 0.19100 0.03800 O6 0.70500 0.25000 0.15200 0.03800 O7 0.65900 0.25000 0.78900 0.03800 O8 0.39600 0.25000 0.79300 0.03800