Luminescence, fluorescence et phosphorescence des minéraux: bibliographie

BANALSITE

Chemical formula: BaNa₂Al₄Si₄O₁₆

Family: Silicates

Status: IMA-GP

Crystal system : Tetragonal

Display mineral: NON

Luminescence:


Longwave UV (365nm) colors:	Yellowish Green ,
		Frequency LW:Very often
Midwave UV (320nm) colors:	Yellowish Green ,
		Frequency MW:Very often
Shortwave UV (254nm) colors:	Bluish White , Red ,
	Intensity SW:Weak	Frequency SW:Very often

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

Type d'UV	Couleur	Fréquence d'observation
UV longs (365nm):	Green	Very often
UV moyens (320 nm):	Green	Very often
UV courts (254 nm):	Green	Very often

Comments:

Fluorescence Color similar to eucryptite for Wales UK specimens.

Activator(s) and spectrum:

No data

No spectrum yet

Comments on spectrum and activators:

Cathodoluminescence: violet;

Best localities for fluorescence (*):

Benallt Mine (Tyddyn Meirion mine; Ty Canol mine), Rhiw, Llanfaelrhys, Lleyn Peninsula, Gwynedd, (Caernavonshire) Wales, UK (SW red)
Langban, Varmland Province, Sweden (associated with cymrit SW green & Celsian SW blue);

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

Bibliographic 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 ,

Reference for luminescence on the Internet:

UK dealer Richard Taylor has been instrumental in making this mineral known. This information furnished by Gavin Malcolm.
Fluorescent Minerals of Langban, Richard Loyens, UV-Waves January/February 1996.

Images:

Wales, UK : https://www.mindat.org/photo-277911.html

Mineralogical reference on the Internet:

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

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

Internet Search:

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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.