EUCLASE
Chemical Formula: BeAlSiO4(OH)
Familly: Silicates
Status: IMA-GP
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Red | Weak | | Short Waves (254 nm): | Pale Yellow | | | | | | |
Phosphorescence (in the common meaning of the term) seen by naked eye:
No Data
Main Activator(s) and spectrum:
Most Common Activator: Fe3+
Other activators: Cr3+ ,
Peaks in the spectrum (nm):
Cr3+ : 686, 705nm (peaks)
Fe3+ : 765nm (broad band)
OH : 670nm (peak)
No spectrum for the moment
Comments on activators and spectra:
Excitation by CW laser with 532 nm revealed narrow line and broad band which may be ascribed to Cr3+ and Fe3+ (Gaft)
Best Locality for luminescence(*):
- Vila Rica (Vila Rica de Albuquerque was renamed to Ouro Preto in 1823), Minas Gerais, Brazil;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- The Henkel Glossary of Fluorescent Minerals, Dr. Gerhard Henkel, Published by the FMS, 1989 ,
- Luminescence Spectroscopy of Minerals and Materials, M. Gaft, R. Reisfeld, G. Panczer, Springer Editor, ISBN: 10 3-540-21918-8 ,
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Euclase
http://webmineral.com/data/Euclase.shtml
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