Yurgensonite
Yurgensonite is an IMA-recognized mineral species in the arsenate class, with the chemical formula K₂SnTiO₂(AsO₄)₂.
It crystallizes in the orthorhombic crystal system (space group Pna2_1). It is a member of the Katiarsite structural group.
Key properties: specific gravity 3.877; White streak; Vitreous luster; optically biaxial.
IMA symbol Ygs, IMA status: approved, named in 2019.
Occurs as sublimates at an active volcanic fumarole.
It is found associated with Sn-bearing katiarsite, badalovite, pansnerite, yurmarinite, achyrophanite, hatertite, arsenatrotitanite, khrenovite, svabite, sanidine, hematite, cassiterite.
The mineral was named to honor Russian mineralogist, geochemist, and specialist in studies of ore deposits Professor Georgiy Aleksandrovich Yurgenson (b.