Database of luminescent minerals 

PYROCHLORE

Chemical formula: (Na,Ca)₂Nb₂O₆(OH,F)

Family: Oxides and hydroxides

Status: IMA-A (GP)

Crystal system : Isometric

Display mineral: NON

Luminescence:

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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): (UO₂)²⁺ (ion Uranyle) en impureté, Sm³⁺,  Eu³⁺,  Dy³⁺,  Tb³⁺,  Nd³⁺,  

Peaks in the spectrum (nm):

 Dy³⁺ : 479, 577nm

 Tb³⁺ : 546nm

 Sm³⁺ : 601nm

 Nd³⁺ : 806, 867, 876, 880 - 881, 891, 1060nm

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:

Steady-state luminescence spectra of pyrochlore revealed emission of REE, such as trivalent Dy and Nd (Gorobets and Rogojine 2001).

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 ,
• Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,

Mineralogical reference on the Internet:

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

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

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