data_1011091 _chemical_name_systematic 'Gold(IV) telluride' _chemical_name_mineral 'Krennerite' _chemical_compound_source 'from Cripple Creek, Colorado' _chemical_formula_structural 'Au Te2' _chemical_formula_sum 'Au Te2' _publ_section_title 'The crystal structure of Krennerite' loop_ _publ_author_name 'Tunell, G' 'Ksanda, C J' _journal_name_full ; Journal of the Washington Academy of Sciences ; _journal_coden_ASTM JWASA3 _journal_volume 26 _journal_year 1936 _journal_page_first 507 _journal_page_last 527 _cell_length_a 16.509990000(29999998) _cell_length_b 8.80(3) _cell_length_c 4.45(3) _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 646.5 _cell_formula_units_Z 8 _symmetry_space_group_name_H-M 'P m a 2' _symmetry_Int_Tables_number 28 _symmetry_cell_setting orthorhombic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,-y,z' '1/2-x,y,z' '1/2+x,-y,z' loop_ _atom_type_symbol _atom_type_oxidation_number Au1+ 1.000 Au3+ 3.000 Te0 0.000 Te2- -2.000 Te1- -1.000 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_attached_hydrogens _atom_site_calc_flag Au1 Au1+ 2 a 0. 0. 0. 1. 0 d Au2 Au1+ 2 c 0.25 0.32 0.01 1. 0 d Au3 Au3+ 4 d 0.12 0.67 0.5 1. 0 d Te1 Te0 2 c 0.25 0.03 0.04 1. 0 d Te2 Te2- 2 c 0.25 0.63 0.04 1. 0 d Te3 Te1- 4 d 0. 0.3 0.04 1. 0 d Te4 Te1- 4 d 0.13 0.37 0.5 1. 0 d Te5 Te1- 4 d 0.12 0.97 0.5 1. 0 d