Database of luminescent minerals 

CORDIERITE

Chemical formula: (Mg,Fe)₂Al(Al₃Si₅O₁₈) x(H₂O,CO₂)

Family: Silicates

Status: IMA-GP

Crystal system : Orthorhombic

Display mineral: NON

Luminescence:

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Phosphorescence (in the common sense of the term) observable with the naked eye:

No data

Comments:

Light blue XLS from El Hoyazo, Níjar, Almería, Andalusia, Spain are fluorescent under UVC in a shade of pink. (see mindat picture)

Activator(s) and spectrum:

Activator(s): Fe³⁺, Cr³⁺,  Mn²⁺ ,  

Peaks in the spectrum (nm):

Mn²⁺ repl. Mg²⁺ : 640nm 

Fe³⁺ repl. (Al³⁺,Si⁴⁺)_IV  : 750nm 

Cr³⁺ repl. Al³⁺ : 693nm 

No spectrum yet

Best localities for fluorescence (*):

• Tongul, Altaï;
• Katun-Chuya Massif, Altaï;
• Richmond, NH, USA (cited by De Ment 1947);
• El Hoyazo, Níjar, Almería, Andalusia, Spain;

(*)The data are not exhaustive and are limited to a few remarkable localities for fluorescence

Bibliographic reference for luminescence:

• Luminescence Spectroscopy of Minerals and Materials, M. Gaft, R. Reisfeld, G. Panczer, Springer Editor, ISBN: 10 3-540-21918-8 ,
• Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,

Reference for luminescence on the Internet:

Mineralogical reference on the Internet:

  http://www.mindat.org/show.php?name=Cordierite

  http://webmineral.com/data/Cordierite.shtml

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