Articles | Volume 34, issue 1
Eur. J. Mineral., 34, 7–18, 2022
https://doi.org/10.5194/ejm-34-7-2022
Eur. J. Mineral., 34, 7–18, 2022
https://doi.org/10.5194/ejm-34-7-2022
Research article
12 Jan 2022
Research article | 12 Jan 2022

40Ar/39Ar dating of a hydrothermal pegmatitic buddingtonite–muscovite assemblage from Volyn, Ukraine

Gerhard Franz et al.

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Short summary
The age of formation of buddingtonite, ammonium-bearing feldspar, can be dated with the Ar–Ar method; however, it may often give only minimum ages due to strong resetting. In the studied example it gives a Precambrian minimum age of fossils, associated with this occurrence, and the age of the accompanying mineral muscovite indicates an age near 1.5 Ga. We encourage more dating attempts of buddingtonite, which will give valuable information of diagenetic or hydrothermal events.