Home / Explore / Minerals / Haywoodite Minerals Haywoodite haywoodite Haywoodite: Mineral information, data and localities. — via www.mindat.org · Source Overview Haywoodite is a mineral species. It crystallises in the triclinic system. Scientific references Haywoodite — Wikidata. https://www.wikidata.org/wiki/Q112944280 Link