Database of luminescent minerals 

beta-willemite    (French name: beta-willemite )

Chemical formula: See WILLEMITE

Family: Silicates

Status: NON APPR

Display mineral: NON

Luminescence:

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

No data

Comments:

= yellow fluorescing willemite (golden-yellow to orange)

Beta-willemite does show anomalous yellow, rather than green fluorescence;
the change in the luminescence is related to subtle, but consistent, structural differences with normal willemite. (see mindat)

Activator(s) and spectrum:

Activator(s): Mn²⁺ ,

No spectrum yet

Best localities for fluorescence (*):

• Andover mine, Andover, Sussex county, New Jersey, USA;
• Sterling Hill Mine, Ogdensburg, Franklin, New Jersey, USA;
• Preguiça Mine, Sobral da Adiça, Moura, Beja District, Portugal (yellowish-white fluorescence SW);

(*)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 ,
• 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=Beta-willemite

  http://webmineral.com/data/Beta-willemite.shtml

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