Database of luminescent minerals 

LIEBIGITE

Chemical formula: Ca₂(UO₂)(CO₃)₃ 11H₂O

Family: Carbonates

Status: IMA-GP

Crystal system : Orthorhombic

Display mineral: NON

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

Luminescence:

Daylight picture

LIEBIGITE ,
Schwartzwalder Mine, Jefferson Co., Colorado USA
Photo and Copyright: Christopher J. Stefano, Michigan, USA
Used with permission of the author

Longwave (365nm) picture

LIEBIGITE UVLW,
Schwartzwalder Mine, Jefferson Co., Colorado USA
Photo and Copyright: Christopher J. Stefano, Michigan, USA
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

Comments:

It was first described in 1848 for an occurrence in Adrianople, Edirne Province, Marmara Region, Turkey. It was named for German chemist Justus von Liebig (1803–1873)

Activator(s) and spectrum:

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

Peaks in the spectrum (nm):

(UO₂)²⁺ : 464.3 (SW only), 469.3 (LW only), 482.8, 503.3, 524.8, 548.5, 574.8, 604.6, 638.5

Spectrum Galery:

  
  Go to the galery (2 spectra)

Comments on spectrum and activators:

Peak at 464.3 is SW only;

In shortwave, peaks at 482.8 and 503.3 have approximately the same height giving a bluer apparence to the fluorescence color (estimated RGB color: 65, 255, 132).

In Longwave, the peak at 503.3 dominates all other peaks giving a green fluorescence color (estimated RGB color: 65, 255, 100).

Best localities for fluorescence (*):

• Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic;
• Schwartzwalder Mine, Ralston Buttes District, Jefferson Co., Colorado, USA;
• Pitch Mine, Marshall Pass District, Saguache Co., Colorado, USA;
• Les Mares III, Saint-Martin-du-Bosc, Le Bosc, Lodève, Hérault, Occitanie, France;

(*)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 ,
• Introduction to radioactive minerals, Robert Lauf, Schiffer Publishing, 2008, ISBN 978-0-7643-2912-8 ,

Reference for luminescence on the Internet:

Mineralogical reference on the Internet:

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

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

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