What question did this study set out to answer?

The aim is to assess the efficacy of zircon reference materials in the U-Th-Pb dating of allanite.

April 16, 2026Mineralogical Magazine0 citationsOpen Access

Non-matrix-matched analysis with allanite and zircon: In situ U-Th-Pb age determination and trace-element constraints on Cretaceous granite genesis in the North Taihang Orogen

Key Points

The aim is to assess the efficacy of zircon reference materials in the U-Th-Pb dating of allanite.
Used non-matrix-matched LA-ICP-MS calibration for dating allanite
Analyzed allanite from two separate Cretaceous granite plutons
Compared results with existing zircon reference materials
Demonstrated successful U-Th-Pb dating of allanite using zircon RMs
Provided constraints on trace-element composition linked to granite genesis
Highlighted limitations of traditional allanite reference materials in age determination

Abstract

Allanite is a REE-rich accessory mineral commonly enriched in Th and U and is therefore well suited to U-Th-Pb geochronology.However, widely used international allanite reference materials (RMs) typically contain common Pb and are not readily accessible.Zircon RMs are robust and available, and have been applied to allanite age determination via non-matrix-matched LA-ICP-MS calibration, but their performance requires further evaluation.In this study, we date magmatic allanite from two Cretaceous granite plutons (Wanganzhen,

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