Home / Explore / Minerals / Oldsite-(K) Minerals Oldsite-(K) oldsite-(K) K2Fe²⁺[(UO2)(SO4)2]2(H2O)8 Oldsite-(K): Mineral information, data and localities. — via www.mindat.org · Source Overview Oldsite-(K) is a mineral species. It crystallises in the orthorhombic system. Scientific references Oldsite-(K) — Wikidata. https://www.wikidata.org/wiki/Q110297427 Link