Database of luminescent Minerals


Chemical Formula: CaAl2(F,OH)8

Familly: Halides

Status: IMA-GP

Crystal System: Monoclinic

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Bluish White
Short Waves (254 nm):      Orangy yellow
Other colors LW:                    
Blue , Bluish , Violet , Violet blue ,
Other colors SW:          
Bluish White , Blue ,

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

No Data

Main Activator(s) and spectrum:

Most Common Activator: Ce3+

Other activators:            Cr3+ , Sm3+ , Eu3+ ,

Peaks in the spectrum (nm):

Ce3+ : 375nm

Cr3+ : sharp peak at 617, 656, 699nm (exc. 532nm)

No spectrum for the moment

Comments on activators and spectra:

Prosopite was studied by steady-state luminescence spectroscopy and luminescence of trivalent REE, such as Gd, Ce, Dy, and Sm, was found (Gorobets and Rogojine 2001).

Excitation by CW laser with 532 nm revealed narrow luminescence lines possibly belonging to Eu3+, Sm3+ and Cr3+ and luminescence band peaking at 720 nm (Gaft)

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:

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: