Home / Explore / Minerals / Protocaseyite Minerals Protocaseyite protocaseyite Protocaseyite: Mineral information, data and localities. — via www.mindat.org · Source Overview Protocaseyite is a mineral species (decavanadate mineral). It crystallises in the triclinic system. Scientific references Protocaseyite — Wikidata. https://www.wikidata.org/wiki/Q106626989 Link