Geochronological constraints on the age of komatiites and nickel mineralisation in the Lake Johnston greenstone belt, Yilgarn Craton, Western Australia

SHRIMP U‐Pb zircon geochronology has been carried out on two volcanic units from the Maggie Hays nickel prospect. A sample from the footwall to the komatiites that host the nickel mineralisation gives an age of 2921 ± 4 Ma, whereas a sample from the hangingwall gives an age of 2903 ± 5 Ma. These results constrain the age of the primary nickel mineralisation and the host komatiites.