data_global _chemical_name_mineral 'Muscovite-2M1' loop_ _publ_author_name 'Brigatti M F' 'Kile D E' 'Poppi M' _journal_name_full 'The Canadian Mineralogist' _journal_volume 39 _journal_year 2001 _journal_page_first 1171 _journal_page_last 1180 _publ_section_title ; Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 Sample: 2a ; _database_code_amcsd 0005734 _chemical_formula_sum 'O11.72 (F.28 Na.14) Rb.02 K.84 Si3.128 Al2.672 Fe.13 Li.14 Mg.01 H1.72' _cell_length_a 5.197 _cell_length_b 9.019 _cell_length_c 20.068 _cell_angle_alpha 90 _cell_angle_beta 95.71 _cell_angle_gamma 90 _cell_volume 935.955 _exptl_crystal_density_diffrn 2.844 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-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 O11 0.74810 0.31250 0.15860 1.00000 0.01773 O21 0.24670 0.36760 0.16850 1.00000 0.01824 O22 0.41880 0.09250 0.16760 1.00000 0.01786 O31 0.39050 0.25220 0.05320 1.00000 0.01241 O32 0.95800 0.44050 0.05330 1.00000 0.01165 O-H4 0.95480 0.06470 0.04980 0.86000 0.01393 F4 0.95480 0.06470 0.04980 0.14000 0.01393 NaA 0.00000 0.09690 0.25000 0.14000 0.02229 RbA 0.00000 0.09690 0.25000 0.02000 0.02229 KA 0.00000 0.09690 0.25000 0.84000 0.02229 SiT1 0.45240 0.25730 0.13520 0.78200 0.00823 AlT1 0.45240 0.25730 0.13520 0.21800 0.00823 SiT2 0.96450 0.42850 0.13510 0.78200 0.00671 AlT2 0.96450 0.42850 0.13510 0.21800 0.00671 FeM2 0.25260 0.08340 0.00004 0.04000 0.00785 AlM2 0.25260 0.08340 0.00004 0.90000 0.00785 LiM2 0.25260 0.08340 0.00004 0.06000 0.00785 FeM1 0.75000 0.25000 0.00000 0.05000 0.03635 LiM1 0.75000 0.25000 0.00000 0.02000 0.03635 MgM1 0.75000 0.25000 0.00000 0.01000 0.03635 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 O11 0.01382 0.02266 0.01818 -0.00425 0.00523 0.00639 O21 0.01991 0.02143 0.01414 0.00945 0.00262 -0.00182 O22 0.02750 0.01236 0.01414 0.00024 0.00628 0.00000 O31 0.01680 0.01277 0.00808 0.00047 0.00366 0.00000 O32 0.00989 0.01690 0.01010 -0.00024 0.00575 0.00182 O-H4 0.02059 0.01319 0.00808 -0.00118 0.00575 -0.00091 F4 0.02059 0.01319 0.00808 -0.00118 0.00575 -0.00091 NaA 0.02439 0.02225 0.02020 0.00000 0.00366 0.00000 RbA 0.02439 0.02225 0.02020 0.00000 0.00366 0.00000 KA 0.02439 0.02225 0.02020 0.00000 0.00366 0.00000 SiT1 0.01003 0.00783 0.00808 -0.00118 0.00262 0.00000 AlT1 0.01003 0.00783 0.00808 -0.00118 0.00262 0.00000 SiT2 0.00813 0.00495 0.00808 -0.00024 0.00419 0.00091 AlT2 0.00813 0.00495 0.00808 -0.00024 0.00419 0.00091 FeM2 0.00935 0.00742 0.00808 -0.00354 0.00366 0.00091 AlM2 0.00935 0.00742 0.00808 -0.00354 0.00366 0.00091 LiM2 0.00935 0.00742 0.00808 -0.00354 0.00366 0.00091