Database of luminescent minerals 

tourmaline

Chemical formula: See DRAVITE / (Group: see/voir ELBAITE, UVITE, DRAVITE)

Family: Silicates

Status: NR

Crystal system : Rhomboedric

Display mineral: NON

Luminescence:

Daylight picture

TOURMALINE;
Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author

Shortwave (254nm) picture

TOURMALINE;
UVSW
Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author

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Phosphorescence (in the common sense of the term) observable with the naked eye:

No data

Activator(s) and spectrum:

Activator(s): Cr³⁺, Fe³⁺,  Mn²⁺ ,  

Peaks in the spectrum (nm):

Cr³⁺ : lines at 691, 697, 707 nm   
Fe³⁺ : band at 700 - 750 nm   
Mn²⁺ : band at 560 - 570 nm  

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

Spectrum Galery:

  
  Go to the galery (2 spectra)

Comments on spectrum and activators:

Under lamps excitation tourmaline is practically non-luminescent, while under X-ray excitation it exhibits impurity luminescence from Fe3+ centered at 700–750 nm and Mn2+ centered at 560–570 nm (Kusnetsov and Tarashchan 1988). (Gaft)

Activators: Cr3+ (lines at 691, 697, 707 nm), Fe3+ (band at 720 - 750 nm), Mn2+ (band at 560 - 570 nm)

Best localities for fluorescence (*):

(*)The data are not exhaustive and are limited to a few remarkable localities for fluorescence

Bibliographic 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 ,

Mineralogical reference on the Internet:

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

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

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