Database of luminescent Minerals


BERYL


Chemical Formula: Be3Al2Si6O18

Familly: Silicates

Status: IMA-GP

Crystal System: Hexagonal

Mineral for Display: No

Associated names (luminescent varieties, discredited names, synonymes etc.):  aquamarineemeraldmorganitegoshenite

Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Orangy yellow
Short Waves (254 nm):      Orangy yellow
Other colors SW:               
Bluish White , Dark Orange /Tawn , Bluish ,
 

Phosphorescence (in the common meaning of the term) seen by naked eye:


No phosphorescence seen by naked eye whatever the type of UV

Main Activator(s) and spectrum:


Most Common Activator: Cr3+

Other activators:            Fe3+ , Mn4+ , V2+ , VO43- ,

Peaks in the spectrum (nm):

(VO4)3- : Broad band peaking at 433 nm 

Mn2+ tetrahedral  : Broad band peaking at 480nm

Mn2+ octaedral  : Broad band peaking at 570nm 

Fe3+ or V2+ or Mn4+ : Broad band peaking at 720 - 745 nm (140nm half-width) 

Cr3+ or V2+ : Lines at 692 and 694nm 


Spectrum: Michael Gaft, Petah Tikva, Israel. Plot: Institute of Mineralogy, University of Vienna, Austria, with permission of the authors.

         ...

  To the spectrum gallery (3 spectra in the gallery)


Comments on activators and spectra:


Band peaking at 730 nm associated with Mn4+ (or Mn3+)
Broad band peaking at 480 (Mn2+ in tetrahedral) and 570 (Mn2+ in octaedral coordination).
Broad band peaking at 720 - 745 nm (Fe3+ or V2+ or Mn4+).
Lines at 692 and 694 (Cr3+).
Broad band peaking at 433 nm (VO4).


Best Locality for luminescence(*):


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


Bibliographical Reference for luminescence:



Luminescence Reference on internet:



Mineralogical Reference on internet:


  http://www.mindat.org/show.php?name=Beryl

  http://webmineral.com/data/Beryl.shtml

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