Fig. 7
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Images of xenotime from the VP7-2 paragneiss (a-d) and VP7r orthogneiss (e, f). BSE images (b-f) and RGB image (a) with channel intensities correlated to Fe (red), Ca (green) and Mn (blue) contents. Circles indicate the location of the LA-ICPMS pits (7 µm diameter) and their corresponding 206Pb/238U dates (2σ level). (a) and (b) Garnet I with an overgrowth of Ca-rich garnet II (Grt II) at the contact with the plagioclase pseudomorph (ps Pl); note that xenotime inclusions are only present in garnet I (see text); (c) and (d) xenotime inclusions in garnet I and in the matrix of the paragneiss sample VP7-2; note the presence of small xenotime inclusions (Xtm) in the garnet core (Grt I); (e) and (f) subhedral xenotime grains (Xtm) in the matrix of the orthogneiss sample VP7r; dashed circles indicate the location of the discordant spot analyses.
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