Trace hydrogen in the olivine-type minerals chrysoberyl, Al2BeO4 and sinhalite, MgAlBO4 - a polarized FTIR spectroscopic study.
- Author(s)
- Anton Beran, Peter Bauerhansl
- Abstract
Polarized FTIR spectra of chrysoberyl (I) and sinhalite (II) show absorption bands in the region of the OH stretching fundamental. Strongly pleochroic bands centered at 3234/3219 and 3135 cm-1 in I and at 3509 and 3474 cm-1 in II are attributed to OH dipoles oriented parallel to [100]. Assuming vacancies on the X-sites (X = Be and B, resp.), it is proposed that O1 is partially replaced by OH groups pointing to the X-vacancy. This may be the predominant incorporation mode for trace H in olivine-type structures.
- Organisation(s)
- Department of Mineralogy and Crystallography
- Journal
- Schweizerische Mineralogische und Petrographische Mitteilungen: eine europäische Zeitschrift für Mineralogie, Geochemie und Petrographie
- Volume
- 77
- Pages
- 131-136
- No. of pages
- 6
- ISSN
- 0036-7699
- Publication date
- 1997
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105116 Mineralogy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/36667978-94a9-45c8-b6b6-31446c798b0d