Velikite Kaplunnik L N, Pobedimskaya E A, Belov N V Soviet Physics Crystallography 22 (1977) 99-100 Crystal structure of velikite Cu3.75Hg1.75Sn2S8 Locality: Khaidarkan, Kyrgyzstan _database_code_amcsd 0015574 5.542 5.542 10.908 90 90 90 I-42m atom x y z occ Biso Cu .5 0 .2498 .40 1.863 Zn .5 0 .2498 .07 1.863 Hg 0 0 0 .875 .523 Sn 0 0 .5 1.477 S .2435 .2435 .3533 1.356