data_global _chemical_name_mineral 'Muscovite' loop_ _publ_author_name 'Liang J' 'Hawthorne F C' _journal_name_full 'The Canadian Mineralogist' _journal_volume 34 _journal_year 1996 _journal_page_first 115 _journal_page_last 122 _publ_section_title ; Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement Sample: Rietveld refinement (transmission mode) ; _database_code_amcsd 0005483 _chemical_formula_sum 'Al1.94 Si3.86 K.86 (O12 H2)' _cell_length_a 5.1765 _cell_length_b 8.9872 _cell_length_c 20.072 _cell_angle_alpha 90 _cell_angle_beta 95.756 _cell_angle_gamma 90 _cell_volume 929.086 _exptl_crystal_density_diffrn 2.777 _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 Al 0.25100 0.08000 -0.00150 0.97000 SiT1 0.44900 0.25700 0.13410 0.98000 SiT2 0.03300 0.43100 0.36500 0.95000 K 0.00000 0.09900 0.25000 0.86000 O-H 0.03700 0.06600 0.45370 1.00000 O1 0.37500 0.24500 0.05370 1.00000 O2 0.04200 0.44500 0.44690 1.00000 O3 0.41000 0.08800 0.16780 1.00000 O4 0.24400 0.36800 0.16830 1.00000 O5 0.24900 0.30700 0.34400 1.00000