Khatyrkite

Khatyrkite (/ˈkæti.ərkaɪt/ KAT-ee-ər-kyt) is a rare mineral which is mostly composed of copper and aluminium, but might contain up to about 15% of zinc or iron; its chemical structure is described by an approximate formula (Cu,Zn)Al₂ or (Cu,Fe)Al₂. It was discovered in 1985 in placers derived from serpentinite, in association with another rare mineral cupalite ((Cu,Zn,Fe)Al). Both minerals are thus far restricted to the area of Listvenitovyi Stream, in the Khatyrka ultramafic (silicon-poor) zone of the Koryak–Kamchatka fold area, Koryak Mountains, Beringovsky District, Chukotka Autonomous Okrug, Far Eastern Federal District, Russia. The mineral's name derives from the Khatyrka (Russian:Хатырка) zone where it was discovered. Its type specimen (defining sample) is preserved in the Mining Museum in Saint Petersburg, and parts of it can be found in other museums, such as Museo di Storia Naturale di Firenze.