Nevskite
Nevskite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Bi(Se,S).
It crystallizes in the hexagonal crystal system (space group P-3m1). It is a member of the Tetradymite structural group.
Key properties: specific gravity 7.85; Metallic. Anisotropism: Isotropic on basal sections, distinctly anisotropic in perpendicular sections luster.
IMA symbol Nvk, IMA status: approved, named in 1983.
Found in quartz-cassiterite veins.
It is found associated with Wolframite, cassiterite, natanite, laitakarite, guanajuatite.
The name refers to the Nevskoye deposit in 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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