Trace hydrogen in the olivine-type minerals chrysoberyl, Al2BeO4 and sinhalite, MgAlBO4 - a polarized FTIR spectroscopic study.
- Autor(en)
- Anton Beran, Peter Bauerhansl
- Abstrakt
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(en)
- Institut für Mineralogie und Kristallographie
- Journal
- Schweizerische Mineralogische und Petrographische Mitteilungen: eine europäische Zeitschrift für Mineralogie, Geochemie und Petrographie
- Band
- 77
- Seiten
- 131-136
- Anzahl der Seiten
- 6
- ISSN
- 0036-7699
- Publikationsdatum
- 1997
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105116 Mineralogie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/36667978-94a9-45c8-b6b6-31446c798b0d