Database of luminescent minerals 

UMBITE

Chemical formula: K₂ZrSi₃O₉ H₂O

Family: Silicates

Status: IMA-A

Display mineral: NON

Luminescence:

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

No data

Comments:

Bright withish green luminescence at liquid nitrogen temperature

Activator(s) and spectrum:

Activator(s): n[TiO₆] cluster, TiO₆,  

Peaks in the spectrum (nm):

n[TiO₆] : very large band with max at 535 nm  

TiO₆ : shoulder on this band at 450 nm  (Gorobets)

No spectrum yet

Best localities for fluorescence (*):

• Khibina Massif, Kola peninsula, Russia;

(*)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 ,
• Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,

Mineralogical reference on the Internet:

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

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

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