First in situ Lu–Hf garnet date for  a lithium–caesium–tantalum (LCT) pegmatite from the Kietyönmäki Li deposit, Somero–Tammela pegmatite region, SW Finland

Szentpéteri, Krisztián; Cutts, Kathryn; Glorie, Stijn; O'Brien, Hugh; Lukkari, Sari; Radoslaw, Michallik M.; Butcher, Alan

doi:https://doi.org/10.5194/ejm-36-433-2024

Articles | Volume 36, issue 3

https://doi.org/10.5194/ejm-36-433-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/ejm-36-433-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 36, issue 3

Research article

|

03 Jun 2024

Research article |

| 03 Jun 2024

First in situ Lu–Hf garnet date for a lithium–caesium–tantalum (LCT) pegmatite from the Kietyönmäki Li deposit, Somero–Tammela pegmatite region, SW Finland

Krisztián Szentpéteri, Kathryn Cutts, Stijn Glorie, Hugh O'Brien, Sari Lukkari, Michallik M. Radoslaw, and Alan Butcher

Supplement

https://doi.org/10.5194/ejm-36-433-2024-supplement

Data sets

Laser ablation ICP-MS/MS Lu-Hf garnet data for Keityonmaki Li-pegmatite K. Szentpéteri et al. https://doi.org/10.60520/IEDA/113207

Short summary

In situ Lu–Hf geochronology of garnet is applied to date a Finnish lithium–caesium–tantalum (LCT) pegmatite from the Somero–Tammela pegmatite region. The age obtained was 1801 ± 53 Ma, which is consistent with zircon ages of 1815–1740 Ma obtained from the same pegmatite. We show the in situ Lu–Hf method is a fast way of obtaining reliable age dates from LCT pegmatites.