OH in naturally occurring corundum
- Autor(en)
- Anton Beran, George R. Rossman
- Abstrakt
Hydroxide bands arising from intrinsic hydrous defects have been observed in the infrared spectra of 159 corundum crystals from worldwide localities. The OH defects are most prominent in blue sapphire crystals, suggesting an association of OH with redox reactions involving iron. Using a calibration for OH in kyanite, the absolute concentrations for OH in corundum are found to be generally 0.5 wt.ppm or lower. The linear OH absorption coefficient for the most intense band centered at 3310 cm-1 never exceeds 0.5 cm-1, In addition to the intrinsic OH defects, a number of previously identified hydrous inclusions often contribute to absorptions in the OH stretching region of the corundum infrared spectrum. Π2006 E. Schweizerbart'sche Verlagsbuchhandlung.
- Organisation(en)
- Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- California Institute of Technology (Caltech)
- Journal
- European Journal of Mineralogy: an international journal of mineralogy, geochemistry and related sciences
- Band
- 18
- Seiten
- 441-447
- Anzahl der Seiten
- 7
- ISSN
- 0935-1221
- Publikationsdatum
- 2006
- Peer-reviewed
- Ja
- ÖFOS 2012
- 1030 Physik, Astronomie, 105116 Mineralogie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/ea636101-d8b8-45b2-863e-3cc722f96284