Assessment of elemental fractionation and matrix effects during in situ Rb–Sr dating of phlogopite by LA-ICP-MS/MS: implications for the accuracy and precision of mineral ages

Q: What does this research mean for the field?

Physical and chemical properties, along with Rb/Sr elemental fractionation, significantly impact the accuracy and precision of in situ Rb–Sr dating of phlogopite via LA-ICP-MS/MS. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Ahmad Redaa; Juraj Farkaš; Sarah Gilbert; Alan S. Collins; Ben Wade; Stefan Löhr; Thomas Zack; Dieter Garbe‐Schönberg

doi:10.1039/d0ja00299b

November 5, 2020Journal of Analytical Atomic Spectrometry

Assessment of elemental fractionation and matrix effects during in situ Rb–Sr dating of phlogopite by LA-ICP-MS/MS: implications for the accuracy and precision of mineral ages

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Key Points

To evaluate how chemical compositions, physical mineral properties, and laser-induced elemental fractionation affect the precision and accuracy of in situ Rb–Sr phlogopite dating.
Assessed rubidium and strontium elemental fractionation behavior during laser ablation tandem mass spectrometry (LA-ICP-MS/MS).
Analyzed the influence of varied phlogopite mineral matrices on isotopic ratio measurements and age determinations.
Demonstrated that down-hole elemental fractionation between rubidium and strontium directly biases measured isotopic ratios during laser ablation.
Showed that compositional matrix variations among mica standards require strict matrix-matching or correction protocols to achieve accurate mineral crystallization ages.

Implication

Methodological analysis evaluates matrix effects and elemental fractionation during in situ phlogopite dating, highlighting key controls on mineral age accuracy.

Abstract

The effect of physical/chemical properties and Rb/Sr elemental fractionation on the accuracy of in situ Rb–Sr dating via LA-ICP-MS/MS.

Discussion

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Cite This Study

Redaa et al. (2020) studied this question.

synapsesocial.com/papers/6aaa63d247961702446cbf3d https://doi.org/10.1039/d0ja00299b

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Assessment of elemental fractionation and matrix effects during in situ Rb–Sr dating of phlogopite by LA-ICP-MS/MS: implications for the accuracy and precision of mineral ages

Key Points

Implication

Abstract

Discussion

Cite This Study

Assessment of elemental fractionation and matrix effects during in situ Rb–Sr dating of phlogopite by LA-ICP-MS/MS: implications for the accuracy and precision of mineral ages

Key Points

Implication

Abstract

Discussion

Cite This Study

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