Zircon is a common mineral in continental crustal rocks, and is often used in the reconstruction of geological processes. Analyses of the isotopic and trace element compositions of large zircons of gem quality from the Bohemian Massif reveal that zircons can remain intact in the upper mantle under specific chemical conditions for about 20–60 million years.
- Wolfgang Siebel
- Axel K. Schmitt
- Sümeyya Eroǧlu
