Home / Explore / Minerals / Ferriphoxite Minerals Ferriphoxite ferriphoxite [(NH4)2K(H2O)][Fe³⁺(HPO4)2(C2O4)] Ferriphoxite: Mineral information, data and localities. — via www.mindat.org · Source Overview Ferriphoxite is a mineral species. It crystallises in the monoclinic system. Nickel–Strunz class: 10.AB.60. Scientific references Ferriphoxite — Wikidata. https://www.wikidata.org/wiki/Q124630678 Link