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(A) and (B) Cathodoluminescence images of some of the dated apatite grains from Bonnac (A: Androl vein; B: Ferbert vein). (C) and (D) Tera-Wasserburg concordia diagrams for the hydrothermal apatite from Bonnac. n corresponds to the number of apatite grains analyzed. Ellipses and errors are reported at 2σ.
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