Chemical Formula: Na(Al,Fe+3)Si2O6
Status: IMA-A (GP)
Crystal System: Monoclinic
Mineral for Display: No
|Long Waves (365nm): || Green ||Weak||Short Waves (254 nm): || Green ||Weak|
|Other colors LW: || |
Phosphorescence (in the common meaning of the term) seen by naked eye:
Main Activator(s) and spectrum:
Most Common Activator: Fe3+
Other activators: Cr3+ , Ti3+ ,
Peaks in the spectrum (nm):
Ti3+ : 439nm
Fe3+: Broad band at 739nm (796?) (81nm fwh)
Cr3+ : 593nm
(?) : broad band at 600nm, at 710nm and at 752nm
No spectrum for the moment
Comments on activators and spectra:
Luminescence of Fe3+ is quenched by Fe2+.
Best Locality for luminescence(*):
(*)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 Reference on internet:
Mineralogical Reference on internet:
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