Izoklakeite
Izoklakeite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula Pb₂₆.₄(Cu,Fe)₂(Sb,Bi)₁₉.₆S₅₇.
It crystallizes in the orthorhombic crystal system (space group Pnnm). It is a member of the Kobellite structural group.
Key properties: Mohs hardness 3.7–4.2; specific gravity 6.47; Gray-black streak; Metallic luster.
IMA symbol Iz, IMA status: approved, named in 1983.
Found in a massive Zn–Cu–Pb sulfide deposit (Izok Lake, Canada); from a Cu–Co sulfide deposit in skarn (Vena mines, Sweden).
It is found associated with Galena, pyrrhotite, pyrite, jaskólskiite (Izok Lake, Canada); galena, jaskólskiite, pyrrhotite, bismuth, antimony, antimonian bismuthinite.
The name is derived from the locality at Izok Lake, Canada.
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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