Database of luminescent Minerals


Chemical Formula: (Na,K)AlSi3O8

Familly: Silicates

Status: IMA-GP

Crystal System: Triclinic

Mineral for Display: No


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(*):

(*)Data are not exhaustive and are limited to the most important localities for fluorescence

Bibliographical Reference for luminescence:

Mineralogical Reference on internet:

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Note: While all due attention has been paid to the implementation of the database, it may contain errors and/or accidental omissions. By nature, the database will always be incomplete because science always evolves according to new analysis.
A request providing no result means only that no such reference exists in the database, but it does not mean that what you are looking for does not exist, just not to our knowledge. If you think you have found an error or omission, please let us know via the contact page being sure to cite the source of information.


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