data_global _chemical_name_mineral 'Heterosite' loop_ _publ_author_name 'Bjorling C O' 'Westgren A' _journal_name_full 'Geologiska Foreningens i Stockholm Forhandlingar' _journal_volume 60 _journal_year 1938 _journal_page_first 67 _journal_page_last 72 _publ_section_title ; Minerals of the Varustrask Pegmatite. IX. X-ray studies of triphylite, varulite and their oxidation products ; _database_code_amcsd 0018613 _chemical_compound_source 'Varustrask pegmatite, Sweden' _chemical_formula_sum 'Fe P O4' _cell_length_a 4.760 _cell_length_b 9.680 _cell_length_c 5.819 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 268.121 _exptl_crystal_density_diffrn 3.736 _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 Fe -0.02800 0.27800 0.25000 P 0.41700 0.09700 0.25000 O1 -0.25000 0.05600 0.25000 O2 0.25000 0.44400 0.25000 O3 0.19400 0.16700 0.02800