Home / Explore / Minerals / Kimrobinsonite Minerals Kimrobinsonite kimrobinsonite (Ta,Nb)(OH)5-2x(O,CO3)x ; x near 1.2 Kimrobinsonite: Mineral information, data and localities. — via www.mindat.org · Source Overview Kimrobinsonite is a mineral species (hydroxide mineral). Nickel–Strunz class: 4.FG.15. Scientific references Kimrobinsonite — Wikidata. https://www.wikidata.org/wiki/Q3815361 Link