Database of luminescent minerals 

DANBURITE

Chemical formula: CaB₂(SiO₄)₂

Family: Silicates

Status: IMA-GP

Crystal system : Orthorhombic

Display mineral: NON

Luminescence:

Daylight picture

DANBURITE ,

Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author

Shortwave (254nm) picture

DANBURITE under UVSW,

Photo and Copyright: James Hamblen
Site of the author
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

Triboluminescence: OUI

Activator(s) and spectrum:

Activator(s): Eu²⁺, (UO₂)²⁺ (ion Uranyle) en impureté,  Ce³⁺,  Sm³⁺,  Eu³⁺,  Dy³⁺,  Tb³⁺,  Mn²⁺ ,  Nd³⁺,  Yb²⁺,  

Peaks in the spectrum (nm):

Ce³⁺: 346 - 347, 367nm
Eu²⁺: 437 - 438, 455nm
Yb²⁺: 535nm
Eu³⁺: 580, 592, 610 - 611 - 613, 618 - 620, 654, 690nm
(All REE replacing Ca²⁺)

Spectrum: Michael Gaft, Petah Tikva, Israel. Plot: Institute of Mineralogy, University of Vienna, Austria, with permission of the authors.

Spectrum Galery:

  
  Accès à la galerie complète (6 images au total)

Comments on spectrum and activators:

Triboluminescence cited by De Ment (1947).

Luminescence centers Eu2+, Yb2+, Ce3+, Dy3+ and Sm3+ characterize steady-state spectra of danburite (Gaft et al. 1979). 

Best localities for fluorescence (*):

• Aurora Mine, Charcas Mineral District, Mun. de Charcas, San Luis Potosí, Mexico (bright yellow green or bright violet-blue LW+SW);
• Japan, locality unknown (bright blue LW);
• Mogok Township, Pyin-Oo-Lwin District, Mandalay Division, Burma (bright green-blue LW);
• Hormuz Island, Hormozgan Province, Iran (modest yellow-green SW and purple LW);

(*)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 ,
• Luminescence Spectroscopy of Minerals and Materials, M. Gaft, R. Reisfeld, G. Panczer, Springer Editor, ISBN: 10 3-540-21918-8 ,
• Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,
• Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,

Reference for luminescence on the Internet:

Mineralogical reference on the Internet:

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

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

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