Watanabeite exhibited at the Mining Museum of Akita University — Photo: 掬茶 · CC BY-SA 4.0
Watanabeite
Watanabeite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula Cu₄(As,Sb)₂S₅.
It crystallizes in the orthorhombic crystal system.
Key properties: specific gravity 4.66; Lead-gray streak; Metallic luster.
IMA symbol Wa, IMA status: approved, named in 1991.
Found in a hydrothermal quartz vein (Teine mine); in a high sulfidation epithermal deposit (Kamchatka).
It is found associated with Emplectite, native bismuth, tennantite, quartz (Teine mine).
The mineral was named to honor Professor Takeo Watanabe (1907-1986), University of Tokyo (1944-1968), Nagoya University (1968-1971), President of the Akita University (1971-1976).
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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