data_global _chemical_name_mineral 'Mcalpineite' loop_ _publ_author_name 'Missen O P' 'Mills S J' 'Canossa S' 'Hadermann J' 'Nénert G' 'Weil M' 'Libowitzky E' 'Housley R M' 'Artner W' 'Kampf A R' 'Rumsey M S' 'Spratt J' 'Momma K' 'Dunstan M A' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 78 _journal_year 2022 _journal_page_first 20 _journal_page_last 32 _publ_section_title ; Polytypism in mcalpineite: a study of natural and synthetic Cu3TeO6 Sample: ED ; _database_code_amcsd 0021066 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Te Cu3 O6' _cell_length_a 9.745 _cell_length_b 9.749 _cell_length_c 9.771 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 928.284 _exptl_crystal_density_diffrn 5.928 _symmetry_space_group_name_H-M 'P c c a' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,-y,1/2+z' '-x,y,1/2-z' '1/2-x,y,1/2+z' '1/2+x,-y,1/2-z' '1/2+x,y,-z' '1/2-x,-y,z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Te1 0.50000 0.50000 0.50000 0.02390 Te2 0.75000 0.00000 0.30280 0.03560 Cu1 0.50000 0.00000 0.50000 0.02800 Cu2 0.50000 0.71690 0.25000 0.02000 Cu3 0.75000 0.50000 0.21660 0.02100 Cu4 0.21910 0.74820 0.50460 0.03550 Cu5 0.50000 0.22080 0.25000 0.04400 O1 0.61890 0.57620 0.35320 0.02200 O2 0.43040 0.35000 0.38240 0.03000 O3 0.35460 0.87780 0.56410 0.03400 O4 0.35550 0.61740 0.42200 0.02300 O5 0.40000 0.85800 0.14000 0.03300 O6 0.64300 0.09100 0.16900 0.05500 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 Te1 0.02000 0.02400 0.02700 -0.00100 0.00100 0.00100 Te2 0.03300 0.03300 0.04100 -0.00400 0.00000 0.00000 Cu1 0.02100 0.01900 0.04300 -0.00100 -0.00200 0.00100 Cu2 0.02300 0.01200 0.02500 0.00000 -0.00500 0.00000 Cu3 0.01000 0.02800 0.02500 0.01200 0.00000 0.00000 Cu4 0.01400 0.02500 0.06700 -0.00200 0.00700 -0.01600 Cu5 0.06700 0.02500 0.04000 0.00000 0.02400 0.00000 O1 0.01800 0.01900 0.02800 0.01100 -0.00300 0.00700 O2 0.02800 0.01900 0.04300 -0.00500 0.01200 0.01600 O3 0.01800 0.04800 0.03500 0.00100 0.01100 -0.02000 O4 0.02000 0.01300 0.03500 0.00400 0.00800 0.00300 O5 0.03300 0.01100 0.05600 -0.00300 -0.00800 -0.00100 O6 0.07700 0.04400 0.04200 0.03200 0.01200 0.00200