Chemical Formula: (Na,K)2-3(Ca,Na)7(Si,Al)16O38F2 3,5H2O
Mineral for Display: No
|Long Waves (365nm): || Red |
Phosphorescence (in the common meaning of the term) seen by naked eye:
This is a complex potassium sodium oxy-silicate hydrate. From a charoite rock at Murun, Aldan plateau, Yakutia Russia. Fluoresces deep red under LW.
Main Activator(s) and spectrum:
Most Common Activator: Fe3+
Other activators: Eu2+ , Mn2+ ,
Peaks in the spectrum (nm):
Eu2+ replacing Ca2+ : 415nm
Mn2+ repl. Ca2+ : 560nm
Fe3+ replacing Si4+ : 740nm
No spectrum for the moment
Best Locality for luminescence(*):
- Murun, Aldan plateau, Yakutia, Russia;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,
Mineralogical Reference on internet:
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