Vasilyevite
Vasilyevite is an IMA-recognized mineral species in the carbonate class, with the chemical formula (Hg₂)²⁺₁₀O₆I₃Br₂Cl(CO₃).
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Mohs hardness 3; specific gravity 9.57; Red-brown streak; Adamantine to metallic luster.
IMA symbol Vsy, IMA status: approved, named in 2003.
A rare mineral replacing native mercury in vugs in hydrothermal quartz veins.
It is found associated with Native mercury, eglestonite, montroydite, cinnabar.
The mineral was named to honor Russian mineralogist, Vladimir Ivanovich Vasilyev (b. 1929), Institute of Geology, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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