data_global _chemical_name_mineral 'Mellizinkalite' loop_ _publ_author_name 'Pekov I V' 'Zubkova N V' 'Yapaskurt V O' 'Lykova I S' 'Belakovskiy D I' 'Vigasina M F' 'Sidorov E G' 'Britvin S N' 'Pushcharovsky D Y' _journal_name_full 'European Journal of Mineralogy' _journal_volume 27 _journal_year 2015 _journal_page_first 247 _journal_page_last 253 _publ_section_title ; New zinc and potassium chlorides from fumaroles of the Tolbachik volcano, Kamchatka, Russia: mineral data and crystal chemistry. I. Mellizinkalite, K3Zn2Cl7 ; _database_code_amcsd 0020463 _chemical_compound_source 'Glavnaya Tenoritovaya fumarole, Tolbachik volcano, Kamchatka, Russia' _chemical_formula_sum 'K2.949 Rb.03 Zn1.84 Cu.14 Mg.09 Cl6.951' _cell_length_a 6.7737 _cell_length_b 10.5715 _cell_length_c 11.0730 _cell_angle_alpha 117.930 _cell_angle_beta 106.909 _cell_angle_gamma 90.389 _cell_volume 660.609 _exptl_crystal_density_diffrn 2.492 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-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 K1 0.38860 0.90510 0.77980 0.98300 0.04290 Rb1 0.38860 0.90510 0.77980 0.01000 0.04290 K2 0.90330 0.18830 -0.22400 0.98300 0.04750 Rb2 0.90330 0.18830 -0.22400 0.01000 0.04750 K3 0.13320 0.41290 0.28600 0.98300 0.05140 Rb3 0.13320 0.41290 0.28600 0.01000 0.05140 Zn1 0.50700 0.34275 0.01227 0.92000 0.03860 Cu1 0.50700 0.34275 0.01227 0.07000 0.03860 Mg1 0.50700 0.34275 0.01227 0.04500 0.03860 Zn2 0.64580 0.73248 0.44018 0.92000 0.03330 Cu2 0.64580 0.73248 0.44018 0.07000 0.03330 Mg2 0.64580 0.73248 0.44018 0.04500 0.03330 Cl1 0.67450 0.83920 0.31030 0.99300 0.04650 Cl2 0.69500 0.49850 0.34920 0.99300 0.05020 Cl3 0.27850 0.19950 0.02710 0.99300 0.03280 Cl4 0.27540 0.50330 0.01050 0.99300 0.04020 Cl5 0.74530 0.19710 0.01550 0.99300 0.03380 Cl6 0.31410 0.73270 0.45230 0.99300 0.03940 Cl7 0.86300 0.85860 0.67330 0.99300 0.04930