data_global _chemical_name_mineral 'Sarcopside' loop_ _publ_author_name 'Moore P B' _journal_name_full 'American Mineralogist' _journal_volume 57 _journal_year 1972 _journal_page_first 24 _journal_page_last 35 _publ_section_title ; Sarcopside: Its atomic arrangement ; _database_code_amcsd 0000268 _chemical_compound_source 'Bull Moose pegmatite, near Custer, South Dakota, USA' _chemical_formula_sum '(Fe2.34 Mn.63 Mg.03) P2 O8' _cell_length_a 10.437 _cell_length_b 4.768 _cell_length_c 6.026 _cell_angle_alpha 90 _cell_angle_beta 90.00 _cell_angle_gamma 90 _cell_volume 299.876 _exptl_crystal_density_diffrn 3.942 _symmetry_space_group_name_H-M 'P 1 21/a 1' loop_ _space_group_symop_operation_xyz 'x,y,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_occupancy _atom_site_U_iso_or_equiv Fe1 0.00000 0.00000 0.00000 0.78000 0.00735 Mn1 0.00000 0.00000 0.00000 0.21000 0.00735 Mg1 0.00000 0.00000 0.00000 0.01000 0.00735 Fe2 0.28300 -0.01340 0.26390 0.78000 0.00722 Mn2 0.28300 -0.01340 0.26390 0.21000 0.00722 Mg2 0.28300 -0.01340 0.26390 0.01000 0.00722 P 0.10000 0.43410 0.23860 1.00000 0.00671 O1 -0.10420 0.25100 -0.21590 1.00000 0.00899 O2 -0.03580 0.31470 0.24630 1.00000 0.00963 O3 0.16200 0.28380 0.02910 1.00000 0.00988 O4 0.18220 0.32410 0.42960 1.00000 0.00874