Home / Explore / Minerals / Cobaltarthurite Minerals Cobaltarthurite cobaltarthurite (Co,Mg)Fe³⁺2(AsO4)2(OH)2 * 4H2O Cobaltarthurite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Cobaltarthurite is a mineral species (arsenate mineral). Nickel–Strunz class: 8.DC.15. Scientific references Cobaltarthurite — Wikidata. https://www.wikidata.org/wiki/Q3681852 Link