Zircon as a recorder of the oxygen fugacity of magmas
Zircon (ZrSiO4) is a durable mineral found in most igneous rocks; it is highly retentive
of the trace element concentrations it acquires at crystallisation, and its high initial
concentrations of U and Th relative to Pb make it the most important mineral for
radiometric dating. Therefore, it is a valuable archive of magmatic processes,
particularly with regard to those occurring on the early Earth. Based on crystal
chemistry, anomalous Ce and Eu concentrations in zircon relative to other...