Kurilite
Kurilite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Ag₈Te₃Se.
It crystallizes in the hexagonal crystal system.
Key properties: Mohs hardness 3; specific gravity 7.799; Black streak; Metallic luster.
IMA symbol Kri, IMA status: approved, named in 2009.
Found in hydrothermal Au-Ag quartz veins cutting calcalkaline volcanic rocks.
It is found associated with Tetrahedrite, native gold, hessite, sylvanite, petzite.
The name refers to the islands (Kuril arc) on which the first specimens were collected.
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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