Hey's Classification

03 Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)

03.02 Sulphides etc. of Ag

Acanthite Ag2S monoklin P21/n 2/m 03.02.01
Aguilarite Ag4SeS orthorhombisch 03.02.04
Stützite Ag5-xTe3 {x = 0.24-0.36} hexagonal P62m 6m2 03.02.07
Argentopyrite AgFe2S3 orthorhombisch Pmmn mmm 03.02.17