AM_Nabokoite
Formula: Cu7 Te S5 O24 K Cl
Name: Nabokoite
Unit cell: 9.833 9.833 20.591 90.0 90.0 90.0 , V=1990.90
Space group: P4/NCC (130)

Pertlik F , Zemann J , Mineralogy and Petrology , 38 (1988) p.291-298, The crystal structure of nabokoite, Cu7TeO4(SO4)5*KCl:, The first example of a Te(IV)O4 pyramid with exactly tetragonal symmetry, Locality: Mount Tolbachik, Kamchatka, USSR