Home / Explore / Minerals / Riotintoite Minerals Riotintoite riotintoite Al(SO4)(OH)*3H2O Riotintoite: Mineral information, data and localities. — via www.mindat.org · Source Overview Riotintoite is a mineral species (hydrous sulfate mineral). It crystallises in the triclinic system. Scientific references Riotintoite — Wikidata. https://www.wikidata.org/wiki/Q23894840 Link