Database of luminescent Minerals


Chemical Formula: MgCO3

Familly: Carbonates

Status: IMA-GP

Crystal System: Rhomboedric

Mineral for Display: No

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


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

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

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

Triboluminescence: Yes

Main Activator(s) and spectrum:

Most Common Activator: O*

Other activators:            Organic impurities , Mn2+ ,

Peaks in the spectrum (nm):

O*around [CO3]* : 430nm
ST: 520nm
Mn2+ repl. Mg2+: 654 - 660nm - 673nm (FWHM: 100nm)

No spectrum for the moment

Comments on activators and spectra:

Mn2+ activated luminescence in magnesite is characterized by single Gaussian peak at 15300 cm−1 (654 nm).

The CL intensity is nonlinearly related to the Mn2+ concentration.


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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