Database of luminescent Minerals


Chemical Formula: Al2[C6(COO)6] 16H2O

Familly: Organic

Status: IMA-GP

Crystal System: Tetragonal

Mineral for Display: No

Associated names (luminescent varieties, discredited names, synonymes etc.):  xylocryptite


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Blue
Short Waves (254 nm):      Blue
Other colors LW:          
Bluish White , Yellowish White ,
Other colors SW:          
Bluish White , Yellowish White ,

Daylight Picture

Mellite, Csordakut Mine, Tatabanya, Hungary;
Col. G.Barmarin; Photo: G. Barmarin

Long Waves Picture (365nm)

Mellite, UVLW, Csordakut Mine, Tatabanya, Hungary;
Col. G.Barmarin; Photo: G. Barmarin

Short Waves Pictures (254nm)

Mellite, UVSW, Csordakut Mine, Tatabanya, Hungary;
Col. G.Barmarin; Photo: G. Barmarin


Galerie de photos:


     To the gallery (12 images in the gallery)

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

UV Type Color Intensity Observation Frequency
Long Wave (365nm): Bluish White
Mid Waves (320 nm): Bluish White
Short Waves (254 nm): Bluish White


Aluminium mellitate (benzene hexacarboxylate) hydrate;

Main Activator(s) and spectrum:

Most Common Activator: Intrinsic organic material

No spectrum for the moment

Comments on activators and spectra:

Mellite fluorescence has been investigated by Gunnell in 1939 (probably published in The Mineralogist).

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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