摘要：AbstractZircon is widely used to simulate melt generation, migration and evolution within the crust and mantle. The achievable performance of melt modelling generally depends on the availability of reliable trace element partition coefficients (D). However, a large range of DREEvalues for zircon from natural samples and experimental studies has been reported, with values spanning up to 3 orders of magnitude. Unfortunately, a gap of knowledge on this variability is evident. In this study we model the crystallization processes of common REE-bearing minerals from granitic melts and show that the measured zircon DREEwould be elevated if there is crystallization of REE-enriched minerals subsequent to zircon. Nevertheless, compared to zircon DREEvalues measured from experimental studies, this mechanism appears to have a less significant influence on those from natural granite samples since the quantity of crystallized REE-enriched minerals is very low in natural magmatic systems and/or most of them crystallize prior to zircon. Combined with recently published studies, this work supports that analysis of natural zircon/host groundmass pairs provides more robust DREEvalues applicable to natural systems than those measured from experimental studies, which can be used to constrain the provenance of detrital zircons.Graphical abstractDisplay OmittedHighlights•Zircon DREEwill vary if REE-enriched minerals crystallize subsequent to zircon.•Natural samples give more reliable zircon DREEthan experimental studies.•The old Jack Hill zircons may be derived from LREE-enriched melts.
