Popovite
Popovite is an IMA-recognized mineral species in the arsenate class, with the chemical formula Cu₅O₂(AsO₄)₂.
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Mohs hardness 3.5; specific gravity 5.3; Light olive-green to light yellow-green streak; Vitreous to greasy luster; optically biaxial.
IMA symbol Ppv, IMA status: approved, named in 2013.
Formed as sublimates on basaltic scoria around an active volcanic fumarole.
It is found associated with Ericlaxmanite, kozyrevskite, urusovite, lammerite, lammerite-β, johillerite, bradaczekite, tenorite, hematite, aphthitalite, anhydrite, langbeinite.
The mineral was named to honor the Russian mineralogists Vladimir Anatol’evich Popov (b. 1941) and Valentina Ivanovna Popova (b. 1941), Institute of Mineralogy, Urals Branch.