data_global _chemical_name_mineral 'Ferropargasite' loop_ _publ_author_name 'Oberti R' 'Ungaretti L' 'Cannillo E' 'Hawthorne F C' _journal_name_full 'American Mineralogist' _journal_volume 78 _journal_year 1993 _journal_page_first 746 _journal_page_last 752 _publ_section_title ; The mechanism of Cl incorporation in amphibole Sample: Cl(0) ; _database_code_amcsd 0001599 _chemical_compound_source 'Nuptse Glacier moraine, Everest Massif, Nepal' _chemical_formula_sum 'Na.36 K.37 Ca1.94 Mg1.8 Fe2.76 Al2.3 Ti.06 Si6.08 O23.74 F.26 H1.74' _cell_length_a 9.895 _cell_length_b 18.119 _cell_length_c 5.332 _cell_angle_alpha 90 _cell_angle_beta 105.17 _cell_angle_gamma 90 _cell_volume 922.649 _exptl_crystal_density_diffrn 3.314 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2-x,1/2+y,-z' '-x,-y,-z' '1/2-x,1/2-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 NaA 0.00000 0.50000 0.00000 0.10000 0.02786 KA 0.00000 0.50000 0.00000 0.13000 0.02786 NaAm 0.03360 0.50000 0.07340 0.05000 0.02204 KAm 0.03360 0.50000 0.07340 0.06000 0.02204 NaA2 0.00000 0.47140 0.00000 0.05000 0.05129 KA2 0.00000 0.47140 0.00000 0.06000 0.05129 Ca4 0.00000 0.28080 0.50000 0.97000 0.00950 Na4 0.00000 0.28080 0.50000 0.03000 0.00950 Mg1 0.00000 0.08970 0.50000 0.46000 0.00735 Fe1 0.00000 0.08970 0.50000 0.54000 0.00735 Mg2 0.00000 0.17800 0.00000 0.27000 0.00633 Fe2 0.00000 0.17800 0.00000 0.51000 0.00633 Al2 0.00000 0.17800 0.00000 0.19000 0.00633 Ti2 0.00000 0.17800 0.00000 0.03000 0.00633 Mg3 0.00000 0.00000 0.00000 0.34000 0.00671 Fe3 0.00000 0.00000 0.00000 0.66000 0.00671 Si1 0.27910 0.08600 0.30260 0.52000 0.00570 Al1 0.27910 0.08600 0.30260 0.48000 0.00570 Si2 0.29110 0.17320 0.81400 1.00000 0.00583 O1 0.10510 0.09110 0.21410 1.00000 0.01001 O2 0.11990 0.17560 0.73580 1.00000 0.00887 F3 0.10970 0.00000 0.71200 0.13000 0.01064 O-h3 0.10970 0.00000 0.71200 0.87000 0.01064 O4 0.36860 0.24990 0.79240 1.00000 0.01039 O5 0.34900 0.13920 0.10870 1.00000 0.01102 O6 0.34260 0.11950 0.60460 1.00000 0.01153 O7 0.33360 0.00000 0.28870 1.00000 0.01532 H 0.15790 0.00000 0.76030 0.87000 0.01938