data_global _chemical_name_mineral 'Montroseite' loop_ _publ_author_name 'Evans H T' 'Mrose M E' _journal_name_full 'American Mineralogist' _journal_volume 40 _journal_year 1955 _journal_page_first 861 _journal_page_last 875 _publ_section_title ; A crystal chemical study of montroseite and paramontroseite. ; _database_code_amcsd 73 _chemical_formula_sum 'V (O2 H)' _cell_length_a 4.54 _cell_length_b 9.97 _cell_length_c 3.03 _cell_angle_alpha 90.0 _cell_angle_beta 90.0 _cell_angle_gamma 90.0 _cell_volume 137.149 _exptl_crystal_density_diffrn 4.066 _symmetry_space_group_name_H-M 'P b n m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-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 V -0.0517 0.1455 0.25 0.00405 O-H1 0.301 -0.197 0.25 0.00405 O2 -0.198 -0.054 0.25 0.00405