Database of luminescent Minerals


Chemical Formula: (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2

Familly: Silicates

Status: IMA-GP

Crystal System: Isometric

Mineral for Display: No

Associated names (luminescent varieties, discredited names, synonymes etc.):  Lapis-lazuli


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Orange Red Medium
Short Waves (254 nm):      Red Weak
Other colors LW:          
Orange , Red ,

Daylight Picture

HAUYNE, Laach lake volcanic complex, Eifel Mts,
Rhineland-Palatinate, Germany ;
Col. G.Barmarin; Photo: G. Barmarin

Long Waves Picture (365nm)

HAUYNE, Laach lake volcanic complex, Eifel Mts,
Rhineland-Palatinate, Germany ; UVLW
Col. G.Barmarin; Photo: G. Barmarin

Short Waves Pictures (254nm)

HAUYNE, Laach lake volcanic complex, Eifel Mts,
Rhineland-Palatinate, Germany ; UVSW
Col. G.Barmarin; Photo: G. Barmarin


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

No Data


Fluorescence of Hauyne of Laacher See, Eifel, Germany, has been described by Gunnell in 1939 (probably in The Mineralogist).


As the sulfide replaces the sulfate in Hauyne it loses its fluorescence and becomes opaque and is the classic Lazurite. To be real Lazurite, it must be sulfide dominant and none have ever been found, so all lazurite is hauyne! (


In practice: darker samples are considered as the variety Lazurite.

Main Activator(s) and spectrum:

Most Common Activator: S2-

Peaks in the spectrum (nm):

S2- repl.[SO4]2- : band centered around 680 nm with ondulations at: 516, 563, 580, 604, 621, 644, 666, 691, 715, 745nm

Hauyne, Tenerife, Spain.
Excitation: laser 405nm. Col. G. Barmarin; Spectre: G. Barmarin


  To the spectrum gallery (1 spectra in the gallery)

Comments on activators and spectra:

Form of the spectrum: typical wavelet of S2- upon a large band.

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.
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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