Database of luminescent Minerals

MONAZITE-(Ce)

Chemical Formula: (Ce,La,Nd,Th)PO₄

Familly: Phosphates, Arseniates, Vanadates

Status: IMA-GP

Crystal System: Monoclinic

Mineral for Display: No

Luminescence:

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

Comments:

exact type not specified: Monazite(Ce) or Monazite(La) or Monazite(Nd).

Main Activator(s) and spectrum:

Most Common Activator: (UO₂)²⁺ (Uranyl ion) as impurities

Other activators:            Sm³⁺ , Eu³⁺ , Nd³⁺ ,

Peaks in the spectrum (nm):

(UO₂)²⁺ : 506, 523 nm

Laser induced luminescence lines corresponding to Sm³⁺, Eu³⁺, Nd³⁺:

Sm³⁺ : lines at 607, 617, 642nm

Nd³⁺ : weak lines at 792, 800, 806, strong lines at 863, 872, 877, 887, 897, 907nm

Best Locality for luminescence(*):

• Berg, Råde, Østfold, Norway (red-orange phosphorescence, De Ment, 1949);
• Montgomery Co., NC, USA (fluo light green) (Bernstein, Am. Mineral. 67, 356-359 (1982))

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

Bibliographical Reference for luminescence:

• The Henkel Glossary of Fluorescent Minerals, Dr. Gerhard Henkel, Published by the FMS, 1989 ,
• Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
• Luminescence Spectroscopy of Minerals and Materials, M. Gaft, R. Reisfeld, G. Panczer, Springer Editor, ISBN: 10 3-540-21918-8 ,
• Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,

Mineralogical Reference on internet:

  http://www.mindat.org/show.php?name=Monazite-(ce)

  http://webmineral.com/data/Monazite-(ce).shtml

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