Database of luminescent minerals 

AFGHANITE

Chemical formula: (Na,Ca,K)₈ (Si,Al)₁₂O₂₄ (SO₄,Cl,CO₃)₃ H₂O

Family: Silicates

Status: IMA-A

Crystal system : Hexagonal

Display mineral: NON

Luminescence:

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

No data

Comments:

Blue afghanite external crystal with a white core: only the inner part does fluoresce;

Activator(s) and spectrum:

Activator(s): S₂^-,

Peaks in the spectrum (nm):

S₂^- : 564, 585, 604, 625, 648, 672, 703nm

Col. G. Barmarin; Spectre: G. Barmarin

Best localities for fluorescence (*):

• Sar-e-Sang District, Koksha Valley, Badakhshan Province, Afghanistan;

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

Bibliographic reference for luminescence:

• The World of Fluorescent Minerals, Stuart Schneider, Schiffer Publishing, 2006, ISBN 0-7643-2544-2 ,

Reference for luminescence on the Internet:

Mineralogical reference on the Internet:

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

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

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