Home / Explore / Minerals / Hayyanite Minerals Hayyanite hayyanite Cu5Ag11Pb76Sb71As17(As²⁺)8S224 Hayyanite: Mineral information, data and localities. — via www.mindat.org · Source Overview Hayyanite is a mineral species. It crystallises in the monoclinic system. Nickel–Strunz class: 2.LB.. Scientific references Hayyanite — Wikidata. https://www.wikidata.org/wiki/Q123167546 Link