Database of luminescent Minerals


Chemical Formula: CaB2(SiO4)2

Familly: Silicates

Status: IMA-GP

Crystal System: Orthorhombic

Mineral for Display: No


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

Daylight Picture


Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author

Short Waves Pictures (254nm)


Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author


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

No Data

Triboluminescence: Yes

Main Activator(s) and spectrum:

Most Common Activator: Eu2+

Other activators:            (UO2)2+ (Uranyl ion) as impurities , Ce3+ , Sm3+ , Eu3+ , Dy3+ , Tb3+ , Mn2+ , Nd3+ , Yb2+ ,

Peaks in the spectrum (nm):

Ce3+: 346 - 347, 367nm
Eu2+: 437 - 438, 455nm
Yb2+: 535nm
Eu3+: 580, 592, 610 - 611 - 613, 618 - 620, 654, 690nm
(All REE replacing Ca2+)

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


  To the spectrum gallery (6 spectra in the gallery)

Comments on activators and spectra:

Triboluminescence cited by De Ment (1947).


Luminescence centers Eu2+, Yb2+, Ce3+, Dy3+ and Sm3+ characterize steady-state spectra of danburite (Gaft et al. 1979). 

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:

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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.
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