Raman study of radiation-damaged zircon under hydrostatic compression
- Autor(en)
- Lutz Nasdala, Ronald Miletich, Katja Ruschel, Tamas Vaczi
- Abstrakt
Pressure-induced changes of Raman band parameters of four natural, gem-quality zircon samples with different degrees of self-irradiation damage, and synthetic ZrSiO4 without radiation damage, have been studied under hydrostatic compression in a diamond anvil cell up to ~10 GPa. Radiation-damaged zircon shows similar up-shifts of internal SiO4 stretching modes at elevated pressures as non-damaged ZrSiO4. Only minor changes of band-widths were observed in all cases. This makes it possible to estimate the degree of radiation damage from the width of the ?3(SiO4) band of zircon inclusions in situ, almost independent from potential "fossilized pressures" or compressive strain acting on the inclusions. An application is the non-destructive analysis of gemstones such as corundum or spinel: broadened Raman bands are a reliable indicator of self-irradiation damage in zircon inclusions, whose presence allows one to exclude artificial color enhancement by high-temperature treatment of the specimen.
- Organisation(en)
- Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- Universität Heidelberg
- Journal
- Physics and Chemistry of Minerals
- Band
- 35
- Seiten
- 597-602
- Anzahl der Seiten
- 6
- ISSN
- 0342-1791
- DOI
- https://doi.org/10.1007/s00269-008-0251-5
- Publikationsdatum
- 2008
- Peer-reviewed
- Ja
- ÖFOS 2012
- 1030 Physik, Astronomie, 105116 Mineralogie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/62a6e569-0b1d-445c-9f1a-f214633fdf0d