Database of luminescent minerals 

BILLIETITE

DOUBTFUL FLUORESCENCE but sometimes cited in luminescence literature

Chemical formula: Ba(UO₂)₆O₄(OH₆)₄-8H₂O

Family: Oxides and hydroxides

Status: IMA-GP

Crystal system : Orthorhombic

Display mineral: NON

Luminescence:

Daylight picture

BILLIETITE, Mina Eureka termino de Castell-estaó, municipio de La Torre de Cabdella, Lérida province, Spain;

Col. G.Barmarin; Photo: G. Barmarin

Longwave (365nm) picture

BILLIETITE, Mina Eureka termino de Castell-estaó, municipio de La Torre de Cabdella, Lérida province, Spain;
UVLW

Col. G.Barmarin; Photo: G. Barmarin

Shortwave (254nm) picture

BILLIETITE, Mina Eureka termino de Castell-estaó, municipio de La Torre de Cabdella, Lérida province, Spain;
UVSW

Col. G.Barmarin; Photo: G. Barmarin

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

No data

Comments:

Cited as non-fluorescent in the litterature ; identification of samples in collection to be verified.

Activator(s) and spectrum:

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

Peaks in the spectrum (nm):

Large band peaking at 536nm ?

Col. G. Barmarin; Spectre: G. Barmarin

Best localities for fluorescence (*):

• Shinkolobwe, Shaba, Congo;
• Mina Eureka termino de Castell-estaó, municipio de La Torre de Cabdella, Lérida province, Spain;

(*)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 ,

Mineralogical reference on the Internet:

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

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

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