Colour: Tin white
Common impurities: Sb
Kirkiite is an extremely rare arsenic and
bismuth bearing mineral.
At the type locality, the Agios Philippos Mine, Kirki Mines, Evros, East Macedonia and Thrace, Greece, kirkiite occurs as grains to 200 microns in a hydrothermal lead-zinc deposit. Associated minerals include cosalite, bismuthinite, bismuth-rich jordanite, seligmannite, levyclaudite and galena in a matrix of sphalerite and pyrite (HOM, AM 71.1278-1279).
At the La Fossa crater, Vulcano Island, Lipari, Eolie Islands, Messina Province, Sicily, Italy, kirkiite occurs in a volcanic fumarole, formed at about 470oC, associated with sphalerite and cannizzarite (HOM).
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