Geochronology
Geochronology
GChron
Articles | Volume 2, issue 2
Articles | Volume 2, issue 2
https://doi.org/10.5194/gchron-2-177-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-2-177-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 2, issue 2
Research article
 | 
07 Jul 2020
Research article |  | 07 Jul 2020

Highly accurate dating of micrometre-scale baddeleyite domains through combined focused ion beam extraction and U–Pb thermal ionization mass spectrometry (FIB-TIMS)

Lee F. White, Kimberly T. Tait, Sandra L. Kamo, Desmond E. Moser, and James R. Darling

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Latest update: 28 Oct 2025
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Short summary
The generation of highly precise and accurate ages requires crushing of the original sample so that individual mineral grains may be separated out for dating. Here, we use a focused ion beam to extract grains directly from a subset of a sample, effectively performing microsurgery to isolate individual crystals from the rock itself. This approach opens the door to high-precision dating for a variety of precious planetary materials that have previously been challenging to date.
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