Home / Explore / Minerals / Ermakovite Minerals Ermakovite ermakovite (NH4)(As2O3)2Br Ermakovite: Mineral information, data and localities. — via www.mindat.org · Source Overview Ermakovite is a mineral species (arsenite mineral). It crystallises in the hexagonal system. Scientific references Ermakovite — Wikidata. https://www.wikidata.org/wiki/Q104144420 Link