The protoliths of the mafic rocks formed from juvenile as well as depleted mantle sources in distinct tectonic environments at different times. The origin of a xenotime overgrowth is reflected in its rareearth element REE pattern. The intercept b determines the amount of initial Pb. Potential applications in geochronology, geochemistry and materials science are discussed. The minerals were cast into.
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Pb diffusion in rutile.
Pb and Rare Earth Element Diffusion in Xenotime
Data points are arrayed linearly and enable us to define an isochron which passes through the origin. For most minerals, the empirical predictions are remarkably consistent with experimental data, which strengthens the link between crystal chemistry and diffusion kinetics. Diffusion profiles were measured with Rutherford backscattering spectrometry RBS. Wide chemical variations of monazite and xenotime need. However, the expense of this i nstrumentation hinders the. Bai et al. The paramet ers of laser.