Database of luminescent Minerals


Chemical Formula: Ca16(Si2O7)4(F,OH)8

Familly: Silicates

Status: IMA-GP

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Yellow
Mid waves (320 nm):      Salmon pink
Short Waves (254 nm):      Orangy yellow Medium
Other colors LW:          
Bluish White , Yellowish White ,
Other colors MW:          
Pinkish White , Salmon pink ,
Other colors SW:          
Yellowish White , Pinkish White ,

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

UV Type Color Intensity Observation Frequency
Short Waves (254 nm): Orangy yellow


Fluo rose-peach MW; 
Found in Franklin 1997 in very small quantity and in 2005 at Buckwheat dump, Franklin;
First identified as johnbaumite, but differentiated by X-Ray powder diffraction analysis.

Main Activator(s) and spectrum:

No data

Comments on activators and spectra:


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: