Home / Explore / Minerals / Decagonite Minerals Decagonite decagonite Al71Ni24Fe5 Decagonite: Mineral information, data and localities. — via www.mindat.org · Source Overview Decagonite is a mineral species (metal alloy mineral). It crystallises in the quasicrystal system. Scientific references Decagonite — Wikidata. https://www.wikidata.org/wiki/Q20821468 Link