Home / Explore / Minerals / Keutschite Minerals Keutschite keutschite Cu2AgAsS4 Keutschite: Mineral information, data and localities. — via www.mindat.org · Source Overview Keutschite is a mineral species (sulfosalt mineral). It crystallises in the tetragonal system. Scientific references Keutschite — Wikidata. https://www.wikidata.org/wiki/Q18845483 Link