Home / Explore / Minerals / Fetiasite Minerals Fetiasite fetiasite (Fe³⁺,Fe²⁺,Ti)3(As2O5)O2 Fetiasite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Fetiasite is a mineral species (arsenite mineral). Nickel–Strunz class: 4.JB.05. Scientific references Fetiasite — Wikidata. https://www.wikidata.org/wiki/Q3744293 Link