Tillmannsite
Sarp H, Pushcharovsky D Y, MacLean E J, Teat S J, Zubkova N V
European Journal of Mineralogy 15 (2003) 177-180
Tillmannsite, (Ag3Hg)(V,As)O4, a new mineral: its description and
crystal structure
_database_code_amcsd 0006963
7.727 7.727 4.648 90 90 90 I-4
atom     x     y     z   occ Biso
Ag   .5707 .6624 .2896 .7525 2.01
Hg   .5707 .6624 .2896 .2475 2.01
V       .5     0   .75   .68  1.5
As      .5     0   .75   .36  1.5
O     .659 .9159  .548        1.8