Guanajuatite Caracas R, Gonze X Physics and Chemistry of Minerals 32 (2005) 295-300 First-principles study of the electronic properties of A2B3 minerals, with A=Bi,Sb and B=S,Se Note: Hypothetical sulphosalt structure derived from density functional theory _database_code_amcsd 0008969 11.830 4.090 11.620 90 90 90 Pnma atom x y z Bi1 .512 .25 .172 Bi2 .657 .75 .466 Se1 .630 .75 .056 Se2 .713 .25 .307 Se3 .433 .75 .376