Zoubekite
Zoubekite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula AgPb₄Sb₄S₁₀.
It crystallizes in the orthorhombic crystal system.
Key properties: Mohs hardness 3; specific gravity 5.15; Black streak; Metallic. Anisotropism: Strong, from light to dark gray with a faint greenish tint. RCR2: (400) -, (420) 38.6-44.3 luster.
IMA symbol Zou, IMA status: approved, named in 1983.
Found in hydrothermal veins.
It is found associated with Boulangerite, galena, diaphorite, argentian tetrahedrite, sphalerite.
The mineral was named to honor Academician Vladimir Zoubek, former Director of the Geological Survey and Geological Institute of the Czechoslovak Academy of Science, Prague, Czechoslovakia.
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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