Metallic inclusions of the extremely rare Au-Se mineral penzhinite in a matrix of chalcopyrite from the type locality in Penzhinia river, Kamchatka. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Penzhinite
Penzhinite is an IMA-recognized mineral species in the sulfide class, with the chemical formula (Ag,Cu)₄Au(S,Se)₄.
It crystallizes in the hexagonal crystal system (space group P6_322).
Key properties: specific gravity 8.35.
IMA symbol Pzh, IMA status: approved, named in 1982.
Found in a near-surface Au–Ag deposit.
It is found associated with Gold, aguilarite, chalcopyrite, galena.
The name refers to the Penzhina River, near the Kamchatka Peninsula, 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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