Home / Explore / Minerals / Guildite Minerals Guildite guildite CuFe³⁺(SO4)2(OH)·4H2O Guildite archived mineral specimens — via www.dakotamatrix.com · Source Overview Guildite is a mineral species (sulfate mineral). It crystallises in the monoclinic system. Nickel–Strunz class: 7.DC.30. Scientific references Guildite — Wikidata. https://www.wikidata.org/wiki/Q3779558 Link