Oxygen isotope analysis of olivine by ion microprobe: Matrix effects and applications to a serpentinised dunite

In order to resolve inter- and intracrystalline oxygen isotopic heterogeneities in olivine crystals encountered in mantle peridotites, basaltic lavas, chondritic meteorites and metamorphic rocks, in situ techniques such as ion microprobes are needed. Accurate ion microprobe analysis requires not only well-characterised reference materials, but also calibration of the matrix bias for compositional variations within a given mineral. We...