Database of luminescent Minerals


Chemical Formula: (Ce,La,Nd,Th)PO4

Familly: Phosphates, Arseniates, Vanadates

Status: IMA-GP

Crystal System: Monoclinic

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Short Waves (254 nm):      Orange
Other colors SW:     
Green ,

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

No Data


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

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

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:

Search on Internet:

  Search for images on 'Google Image'

  Search for documents in English on Google

  Search for documents in any languages on Google

  Search on Wikipédia


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.


Quick search by fluorescent mineral name: