Chemical Formula: (K,Ba)Al(Si,Al)3O8
Mineral for Display: No
|Short Waves (254 nm): || Violet red ||Weak|
|Other colors SW: || |
Phosphorescence (in the common meaning of the term) seen by naked eye:
Sometime intimately associated with margarosanite in Franklin; the margarosanite could therefore be responsible for the blue luminescence.
Other locality: Andover
Main Activator(s) and spectrum:
Most Common Activator: Fe3+
No spectrum for the moment
Comments on activators and spectra:
Hyalophane is a baryum feldspar close to MICROCLINE and amazonite; the red luminescence could therefore be due to Fe3+ as in those minerals.
The blue fluorescence could be associated to Pb as activator.
Best Locality for luminescence(*):
- Jakobsberg Mine, Jakobsberg ore field, Nordmark district, Filipstad, Värmland, Sweden (Blue SW);
- Old Mill Site, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA (fluo red SW);
- Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA (blue fluo SW due to inclusions of margarosanite? and also Pale red SW);
- Langban, Filipstad, Varmland Province, Sweden;
- Zagradski Potok Mine, Zagradski Creek, Busovača, Central Bosnia Canton, Federation of Bosnia and Herzegovina, Bosnia and Herzegovina (weak red SW);
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- The Henkel Glossary of Fluorescent Minerals, Dr. Gerhard Henkel, Published by the FMS, 1989 ,
- Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
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