Home / Explore / Minerals / Karlleuite Minerals Karlleuite karlleuite Ca2MnO4 Karlleuite: Mineral information, data and localities. — via www.mindat.org · Source Overview Karlleuite is a mineral species. It crystallises in the tetragonal system. Nickel–Strunz class: 4.BC.5. Scientific references Karlleuite — Wikidata. https://www.wikidata.org/wiki/Q125547631 Link