Home / Explore / Minerals / Grimaldiite Minerals Grimaldiite grimaldiite CrO(OH) Grimaldiite: Mineral information, data and localities. — via www.mindat.org · Source Overview Grimaldiite is a mineral species (hydroxide mineral). Nickel–Strunz class: 4.FE.20. Scientific references Grimaldiite — Wikidata. https://www.wikidata.org/wiki/Q3776794 Link