Database of luminescent Minerals


Chemical Formula: Ca4Be2Al2Si9O26(OH)2

Familly: Silicates

Status: IMA-GP

Crystal System: Orthorhombic

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Orange
Short Waves (254 nm):      Yellow

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

No Data

Thermoluminescence: Yes


Natural fibrous crystals of bavenite collected in intra-granitic pegmatite bodies of Bustarviejo (Madrid, Spain) have been examined (Garcia-Guinea et al. 2005).

The strong luminescence emissions has been recorded.

Main Activator(s) and spectrum:

Most Common Activator: Mn2+

Other activators:            Sm3+ , Dy3+ , Tb3+ , Gd3+ ,

Peaks in the spectrum (nm):

Gd3+ : 319nm   

Sm3+562 and 594nm   

Dy3+ : 572nm   

Tb3+ : 495nm    

Mn2+ replacing Ca2+ : Broad band at 578nm 

(?) : lines at 656, 659nm

No spectrum for the moment

Comments on activators and spectra:

The bavenite luminescence takes place in the 5d electron shell that interacts strongly with the crystal field;

the spectra bands assignment are Gd3+ (319 nm), Sm3+ (562 and 594 nm), Dy3+ (572 nm) and Tb3+ (495 nm).

A Mn2+ band at about 578 nm in Ca2+ sites is present as a broad band that overlaps with the Dy3+, Sm3+ and Tb3+ bands.

Mn2+ is a transition metal ion that has an electron configuration of 3d5 and interacts strongly with the crystal field (d → d) transition.

(after The role of rare earth elements and Mn2+ point defects on the luminescence of bavenite, J. Garcia-Guinea, V. Correcher, A. Quejido, A. LaIglesia and N. Can, Talanta Volume 65, Issue 1, 15 January 2005, Pages 54-61)

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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