Home / Explore / Minerals / Ferrofettelite Minerals Ferrofettelite ferrofettelite Ferrofettelite: Mineral information, data and localities. — via www.mindat.org · Source Overview Ferrofettelite is a mineral species (sulfide mineral). It crystallises in the monoclinic system. Scientific references Ferrofettelite — Wikidata. https://www.wikidata.org/wiki/Q111127351 Link