Database of luminescent minerals 

CUSPIDINE

Chemical formula: Ca₁₆(Si₂O₇)₄(F,OH)₈

Family: Silicates

Status: IMA-GP

Display mineral: NON

Luminescence:

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

Comments:

Fluo rose-peach MW; 
Found in Franklin 1997 in very small quantity and in 2005 at Buckwheat dump, Franklin;
First identified as johnbaumite, but differentiated by X-Ray powder diffraction analysis.

Activator(s) and spectrum:

No spectrum yet

Comments on spectrum and activators:

Cathodoluminescence:blue;

Best localities for fluorescence (*):

• Buckwheat dump, Franklin, New Jersey, USA;
• Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy;

(*)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 ,

Mineralogical reference on the Internet:

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

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

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