Home / Explore / Minerals / Harmunite Minerals Harmunite harmunite CaFe2O4 Harmunite: Mineral information, data and localities. — via zh.mindat.org · Source Overview Harmunite is a mineral species (oxide mineral). It crystallises in the orthorhombic system. Reported colour: black. Scientific references Harmunite — Wikidata. https://www.wikidata.org/wiki/Q19841412 Link