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P. Tropper, C. E. Manning and D. E. Harlov Experimental determination of CePO4 and YPO4 solubilities in H2O–NaF at 800°C and 1 GPa: implications for rare earth element transport in high-grade metamorphic fluids Geofluids 13

Version of Record online: 13 APR 2013 | DOI: 10.1111/gfl.12031

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The solubility of synthetic CePO4 and YPO4 crystals in H2ONaF fluids at 800°C and 1 GPa has been determined. Solubilities of both rare earth elements (REE) phosphates are significantly greater in NaF than in NaCl at equivalent salt concentration. The results indicate that Y, and by extension HREE, can be fractionated from LREE in fluorine-bearing saline brines which may accompany granulite-facies metamorphism. The new data support previous indications that REE/Y mobility at these conditions is enhanced by complexing with F in the aqueous phase.

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