BADDELEYITE
Chemical Formula: ZrO2
Familly: Oxides and hydroxides
Status: IMA-GP
Crystal System: Monoclinic
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Short Waves (254 nm): | Green | Strong | Very rarely | | | | |
Phosphorescence (in the common meaning of the term) seen by naked eye:
UV Type |
Color |
Intensity |
Observation Frequency |
Short Waves (254 nm): | Green | | |
Main Activator(s) and spectrum:
Most Common Activator: n[TiO6] cluster
Other activators: (UO2)2+ (Uranyl ion) as impurities , Sm3+ , Dy3+ , TiO6 ,
Peaks in the spectrum (nm):
TiO6 : broad band peaking at 520 - 550nm
Dy3+ : lines at 490nm
Sm3+ : 549nm
No spectrum for the moment
Comments on activators and spectra:
Steady-state spectra of baddeleyite are characterized by bright green-blue luminescence which was ascribed to Ti impurity (Gaft et al. 1981a). Besides that, emission lines of trivalent Dy and Sm have been found (Eremenko and Khrenov 1982). (Gaft)
Activator: TiO6 (trace) with lines from Dy and Sm. Also possibly U.
Cathodoluminescence: greenish-blue (Khibiny);
Best Locality for luminescence(*):
- California State Gem Mine (Dallas Gem Mine; Benitoite Gem Mine), Santa Rita Peak, New Idria Mining District, San Benito Co., California, USA;
- carbonatite at Kovdor Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia;
- Vuoriyarvi alkaline-ultrabasic massif, Northern Karelia, Murmanskaja Oblast, Northern Region, Russia;
- Khanneshin complex, Dushan District, Helmand Province, Afghanistan;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
- Luminescence Spectroscopy of Minerals and Materials, M. Gaft, R. Reisfeld, G. Panczer, Springer Editor, ISBN: 10 3-540-21918-8 ,
- Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Baddeleyite
http://webmineral.com/data/Baddeleyite.shtml
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