Home / Explore / Minerals / Macraeite Minerals Macraeite macraeite [K(H2O)]Mn2(Fe2Ti)(PO4)4[O(OH)](H2O)10·4H2O Macraeite: Mineral information, data and localities. — via www.mindat.org · Source Overview Macraeite is a mineral species. It crystallises in the monoclinic system. Nickel–Strunz class: 8.DH.. Scientific references Macraeite — Wikidata. https://www.wikidata.org/wiki/Q123921835 Link