In phases of the meteorites "Semarkona" and "Chervony Kut" a correlation between the concentration of 60Ni, the daughter product of 60Fe, and the abundance of the stable iron isotopes could be found which is evidence for the existence of 60Fe at the time of formation of the Solar System.
60Fe je ugasel radionuklid z dolgim razpolovnim časom (2,6 milijona let).