Norilskite
Norilskite is an IMA-recognized mineral species in the native element class, with the chemical formula (Pd,Ag)₇Pb₄.
It crystallizes in the hexagonal crystal system (space group P3_121).
Key properties: Mohs hardness 4; specific gravity 12.99; Gray streak; Metallic luster; optically uniaxial.
IMA symbol Nrs, IMA status: approved, named in 2015.
Formed in a differentiated mafic intrusion.
It is found associated with Polarite, zvyagintsevite, Pd-rich tetra-auricupride, Pd-Pt-bearing auricupride, Ag-Au alloys, (Pb, As, Sb)-bearing atokite, mayakite, Bi-Pb-rich kotulskite.
The name refers to the mining district in Russia that provided the first specimens.
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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