Home / Explore / Minerals / Meymacite Minerals Meymacite meymacite WO3 * 2H2O Meymacite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Meymacite is a mineral species (hydroxide mineral). It crystallises in the amorphous solid system. Nickel–Strunz class: 4.FJ.05. Scientific references Meymacite — Wikidata. https://www.wikidata.org/wiki/Q3855829 Link