Khvorovite
Khvorovite is an IMA-recognized mineral species in the silicate class, with the chemical formula Pb₄Ca₂[Si₈B₂(SiB)O₂₈]F.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Hyalotekite structural group.
Key properties: Mohs hardness 5–5.5; specific gravity 3.96; White streak; Vitreous luster; optically biaxial.
IMA symbol Khv, IMA status: approved, named in 2014.
Found in the moraine of the Darai-Pioz glacier which erodes a multiphase, boron-enriched, alkaline intrusive complex.
It is found associated with Pectolite, quartz, Sr-rich fluorite, aegirine, polylithionite, turkestanite, baratovite, calcite, pyrochlore-group minerals, reedmergnerite, stillwellite-(Ce).
The mineral was named to honor Pavel Vitalyevich Khvorov (b. 1965), a Russian mineralogist for his contributions to the mineralogy of the Darai-Pioz massif.