Database of luminescent minerals 

DRAVITE

Chemical formula: NaMg₃Al₆(BO₃)₃Si₆O₁₈(OH)₄

Family: Silicates

Status: IMA-GP

Crystal system : Rhomboedric

Display mineral: NON

Associated names (luminescent varieties, discredited names, synonyms, etc.): tourmaline, 

Luminescence:

Daylight picture

DRAVITE;
Jajarkot District, Bheri Zone, Nepal
Photo and Copyright:
Middleearthminerals.com
Used with permission of the author

Shortwave (254nm) picture

DRAVITE;
Jajarkot District, Bheri Zone, Nepal
UVSW
Photo and Copyright:
Middleearthminerals.com
Used with permission of the author

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

No data

Activator(s) and spectrum:

No spectrum yet

Best localities for fluorescence (*):

• Crevola, Italy;
• Moshi, Tanzania;
• Yinniethara, Western Australia, Australia (weak yellow-orange luminescence);
• Kohistan District, Pakistan;
• Jajarkot District, Bheri Zone, Nepal ;
• Pajaru, Jajarkot District, Karnali Pradesh, Nepal;
• Morogoro region of Tanzania (cutted stone moderate to strong yellowish white UV fluorescence);

(*)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=Dravite

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

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