data_global _chemical_name_mineral 'Fluor-arfvedsonite' loop_ _publ_author_name 'Hawthorne F C' 'Ungaretti L' 'Oberti R' 'Bottazzi P' 'Czamanske G K' _journal_name_full 'American Mineralogist' _journal_volume 78 _journal_year 1993 _journal_page_first 733 _journal_page_last 745 _publ_section_title ; Li: an important component in igneous alkali amphiboles Sample: A(8) ; _database_code_amcsd 0001593 _chemical_compound_source 'Questa caldera, New Mexico' _chemical_formula_sum 'O22.8 F1.2 (Si7.88 Al.12) Mg.2 Fe3.57 Mn.67 Ti.1 Zn.1 Li.36 Na2.47 K.245 H.8' _cell_length_a 9.816 _cell_length_b 18.004 _cell_length_c 5.325 _cell_angle_alpha 90 _cell_angle_beta 103.72 _cell_angle_gamma 90 _cell_volume 914.220 _exptl_crystal_density_diffrn 3.394 _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 O1 0.11130 0.09050 0.20730 1.00000 0.00849 O2 0.12010 0.17200 0.73650 1.00000 0.00887 O3 0.11160 0.00000 0.70810 0.40000 0.01267 F 0.11160 0.00000 0.70810 0.60000 0.01267 O4 0.36530 0.24900 0.80000 1.00000 0.01153 O5 0.34980 0.12820 0.08110 1.00000 0.01127 O6 0.34070 0.12030 0.57830 1.00000 0.01115 O7 0.33400 0.00000 0.29790 1.00000 0.01191 SiT1 0.28010 0.08570 0.29060 0.98500 0.00608 AlT1 0.28010 0.08570 0.29060 0.01500 0.00608 SiT2 0.29030 0.17040 0.80120 0.98500 0.00595 AlT2 0.29030 0.17040 0.80120 0.01500 0.00595 MgM1 0.00000 0.09060 0.50000 0.10000 0.00773 Fe2+M1 0.00000 0.09060 0.50000 0.68000 0.00773 MnM1 0.00000 0.09060 0.50000 0.22000 0.00773 Fe2+M2 0.00000 0.18260 0.00000 0.13000 0.00697 Fe3+M2 0.00000 0.18260 0.00000 0.77000 0.00697 TiM2 0.00000 0.18260 0.00000 0.05000 0.00697 ZnM2 0.00000 0.18260 0.00000 0.05000 0.00697 LiM3 0.00000 0.00000 0.00000 0.36000 0.00785 Fe2+M3 0.00000 0.00000 0.00000 0.41000 0.00785 MnM3 0.00000 0.00000 0.00000 0.23000 0.00785 NaM4 0.00000 0.27760 0.50000 1.00000 0.01570 KA 0.00000 0.50000 0.00000 0.09500 0.07979 NaA 0.00000 0.50000 0.00000 0.18200 0.07979 KAm 0.04800 0.50000 0.10550 0.07500 0.03749 NaAm 0.04800 0.50000 0.10550 0.14400 0.03749 H 0.19650 0.00000 0.73290 0.40000 0.06067