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


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (10 Apr 2020) by Brenhin Keller
AR by Lee White on behalf of the Authors (29 Apr 2020)  Author's response   Manuscript 
ED: Publish subject to technical corrections (10 May 2020) by Brenhin Keller
ED: Publish as is (11 May 2020) by Klaus Mezger (Editor)
AR by Lee White on behalf of the Authors (18 May 2020)
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.