Home / Explore / Minerals / Fassinaite Minerals Fassinaite fassinaite Pb2(CO3)(S2O3) Fassinaite: Mineral information, data and localities. — via zh.mindat.org · Source Overview Fassinaite is a mineral species (thiosulfate-carbonate mineral). It crystallises in the orthorhombic system. Scientific references Fassinaite — Wikidata. https://www.wikidata.org/wiki/Q19833617 Link