ANORTHOCLASE
Chemical Formula: (Na,K)AlSi3O8
Familly: Silicates
Status: IMA-GP
Crystal System: Triclinic
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Orange | | | Mid waves (320 nm): | Violet | | | Short Waves (254 nm): | Yellowish White | | | | | | |
Other colors MW: | Violet , |
Other colors SW: | Red , Blue , |
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+ , Eu2+ , Ce3+ , Eu3+ ,
Peaks in the spectrum (nm):
Fe3+: broad bands peaking at 716nm (110nm half-width)
Cr3+(?): broad bands peaking at 785nm
Eu2+: broad band at 403nm (40nm half-width)
Ce3+: broad bands peaking at 335nm
Eu3+: 404nm
Spectrum: Michael Gaft, Petah Tikva, Israel. Plot: Institute of Mineralogy, University of Vienna, Austria, with permission of the authors.
...
To the spectrum gallery (1 spectra in the gallery)
Comments on activators and spectra:
Also broad bands peaking at 335 (Ce3+), 404 nm (Eu3+) (Gaft)
Best Locality for luminescence(*):
- Franklin, New Jersey, USA (blue SW, De Ment 1946, weak pale yellow or weak red) ;
- Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada (cherry red SW, violet MW&LW);
(*)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 ,
- Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Anorthoclase
http://webmineral.com/data/Anorthoclase.shtml
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