Kirkiite

minerals

jordanite

Formula: Pb10Bi3As3S19
Sulphosalt
Hardness: 3½
Colour: Tin white
Common impurities: Sb
Environments

Hydrothermal environments
Fumeroles

Kirkiite is an extremely rare arsenic and bismuth bearing mineral.

Localities

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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