Database of luminescent minerals 

URANOCIRCITE

Chemical formula: Ba(UO₂)₂(PO₄)₂ 12H₂O

Family: Phosphates, Arseniates, Vanadates

Status: IMA-GP

Crystal system : Tetragonal

Display mineral: NON

Luminescence:

Daylight picture

(Meta) Uranocircite de Menzenschwand, Baden-Wurtemberg, Allemagne;
Daylight
Photo and Copyright: G. Barmarin
Col.: L. Vandenberghe

Shortwave (254nm) picture

(Meta) Uranocircite de Menzenschwand, Baden-Wurtemberg, Allemagne;
SW (254nm)
Photo and Copyright: G. Barmarin
Col.: L. Vandenberghe

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

No phosphorescence visible to the naked eye under any type of UV

Activator(s) and spectrum:

Activator(s): (UO₂)²⁺ (ion Uranyle) intrinsèque ,

Peaks in the spectrum (nm):

[ 488.1, 503.5 523.9, 547, 572.1, 599.7nm ]

[ 503, 525, 548, 573, 601, 630nm (échantillon en collection) ]

Col. G. Barmarin; Spectre: G. Barmarin

Best localities for fluorescence (*):

• Bergen, Germany;
• Menzenschwand, Black Forest region, Germany;
• San Pedro mine, Malacacheta, Minas Gerais, Brazil;

(*)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 ,
• Uranium minerals Website: http://www.uraniumminerals.com ,
• Spectroscopic properties of uranium(VI) minerals studied by TRLFS, G. Geipel and Al. Radiochim Acta 88 (2000) ,
• Introduction to radioactive minerals, Robert Lauf, Schiffer Publishing, 2008, ISBN 978-0-7643-2912-8 ,

Mineralogical reference on the Internet:

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

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

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