Database of luminescent Minerals


DOUBTFULL FLUORESCENCE but cited by some authors

Chemical Formula: Y4Al(CO3)2(OH)10F · 6H2O

Familly: Carbonates

Status: IMA-A

Crystal System: Orthorhombic

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      No data
Mid waves (320 nm):      No data
Short Waves (254 nm):      No data

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

No phosphorescence seen by naked eye whatever the type of UV


UV Lamp luminsecence to be confimed.

Main Activator(s) and spectrum:

Most Common Activator: Dy3+

No spectrum for the moment

Comments on activators and spectra:

Strong luminescence features, in the form of many groups of sharp bands, superimposed on a broad band centered at about 570 nm. 

The main luminescence peaks are located in the region between 560 and 590 nm; the strongest ones are at 573, 576, and 582 nm. Other weaker groups of luminescence bands are visible in the regions around 488 and 752 nm (using the 473.1 nm excitation) and 660 nm (using the 632.8 nm line). Dy3+ could be the cause of these luminescence bands, except the broad ones (Gaft et al. 2005); this observation agrees with the fact that Dy3+ is the main substituent of Y3+, as shown by EPMA data. (see publication of BIAGIONI et Al.)

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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