data_global _chemical_name_mineral 'Quetzalcoatlite' loop_ _publ_author_name 'Burns P C' 'Pluth J J' 'Smith J V' 'Eng P' 'Steele I M' 'Housley R M' _journal_name_full 'American Mineralogist' _journal_volume 85 _journal_year 2000 _journal_page_first 604 _journal_page_last 607 _publ_section_title ; Quetzalcoatlite: New octahedral-tetrahedral structure from 2x2x40 micron crystal at the Advanced Photon Source-GSE-CARS Facility ; _database_code_amcsd 0002428 _chemical_formula_sum 'Te2 Zn6 Cu3 O18 Ag.24 Pb.3 Cl.84 H6' _cell_length_a 10.145 _cell_length_b 10.145 _cell_length_c 4.9925 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 444.993 _exptl_crystal_density_diffrn 4.665 _symmetry_space_group_name_H-M 'P -3 1 m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x-y,-y,z' 'y,-x+y,-z' '-y,-x,-z' '-x+y,-x,z' '-x,-x+y,z' '-x,-y,-z' '-x+y,y,-z' '-y,x-y,z' 'y,x,z' 'x-y,x,-z' 'x,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 Te 0.33333 0.66667 0.50000 1.00000 0.00950 Zn 0.20371 0.40740 0.00000 1.00000 0.01400 Cu 0.50000 0.00000 0.50000 1.00000 0.01800 O 0.35080 0.51900 0.28500 1.00000 0.01430 O-H 0.00000 0.27720 0.15800 1.00000 0.02900 Ag 0.00000 0.00000 0.00000 0.24000 0.05940 Pb 0.00000 0.00000 0.00000 0.30000 0.05940 Cl 0.00000 0.00000 0.50000 0.84000 0.02110