On the breakdown of zircon upon "dry" thermal annealing
- Author(s)
- Tamas Vaczi, Eugen Libowitzky, Mathias Mehofer, Lutz Nasdala, Tobias Häger, Richard Wirth
- Abstract
Zircon samples without and with secondary chem. alteration from diverse sources were subjected to heat treatment at 1400 C for 96 h. Resulting new phases and textures suggest that decompn. of zircon into component oxides occurred in all expts. to various degrees. The crucible material was found to have a strong influence on the extent of breakdown, esp. in the case of altered starting materials. In this study the progressive stages of the breakdown of zircon grains are described. The factors that may govern the decompn. are discussed, including radiation damage, secondary alteration and external reaction conditions (sample container, atm.). Alumina crucibles should generally be avoided in dry annealing of zircon, to minimise uncontrolled breakdown into oxides.
- Organisation(s)
- Department of Mineralogy and Crystallography
- External organisation(s)
- Johannes Gutenberg-Universität Mainz, Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum
- Journal
- Mineralogy and Petrology
- Volume
- 97
- Pages
- 129-138
- No. of pages
- 10
- ISSN
- 0930-0708
- DOI
- https://doi.org/10.1007/s00710-009-0087-9
- Publication date
- 2009
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy, 1051 Geology, Mineralogy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/1a90419c-93b3-4b0b-a094-e00df691a2ce