Home / Explore / Minerals / Llantenesite Minerals Llantenesite llantenesite Cu6Al[SeO4](OH)12Cl*3H2O Llantenesite: Mineral information, data and localities. — via www.mindat.org · Source Overview Llantenesite is a mineral species (hydrous sellenate mineral). It crystallises in the trigonal system. Scientific references Llantenesite — Wikidata. https://www.wikidata.org/wiki/Q61478862 Link