Database of luminescent Minerals


Chemical Formula: (K,Na)5(Ca,Ba,Sr)8(Si12O30)(Si6O16)(OH) 4H2O

Familly: Silicates

Status: IMA-A

Crystal System: Monoclinic

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Short Waves (254 nm):      Red

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

No Data


Fluorescence is reported in the violet gem variety of this boron fluoro-silicate from near the Nadym River, Krasnoyarsk territory Russia. Fluorescence is red due to manganese activator. Activators: Mn2+ (very large pic at 530 nm), Ce3+ (360 nm), Eu2+ (408 - 410 nm)(Gaft)

Main Activator(s) and spectrum:

Most Common Activator: Mn2+

Other activators:            Eu2+ , Ce3+ ,

Peaks in the spectrum (nm):

Ce3+  : 360-380nm 

Eu2+  : 408 or 410nm 

Mn2+ repl. Ca2+ : 530nm (band), 580nm 

No spectrum for the moment

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:

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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.


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