Database of luminescent Minerals


COMPREIGNACITE


DOUBTFULL FLUORESCENCE but cited by some authors

Chemical Formula: K2(UO2)6O4(OH)6 7H2O

Familly: Oxides and hydroxides

Status: IMA-A

Mineral for Display: No


Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Green Weak
Short Waves (254 nm):      Green Weak

Daylight Picture


COMPREIGNACITE ,
Mina Eureka termino de Castell-estaó,
municipio de La Torre de Cabdella,
Lérida province, Spain
Photo and Copyright: Joan Abella i Creus, Spain
Used with permission of the author

Short Waves Pictures (254nm)


COMPREIGNACITE , UVSW
Mina Eureka termino de Castell-estaó,
municipio de La Torre de Cabdella,
Lérida province, Spain
Photo and Copyright: Joan Abella i Creus, Spain
Used with permission of the author

 

Phosphorescence (in the common meaning of the term) seen by naked eye:


No Data

Comments:


usually cited as non-fluorescent in the litterature despite pictures and samples in collection; identification to be verified;


Main Activator(s) and spectrum:


Most Common Activator: (UO2)2+ (Uranyl ion) intrinsic

Peaks in the spectrum (nm):

(504nm), 525nm, 546nm, 585nm, (593nm) / 500.7, 516.1, 532.4, 554.3, and 579.6 nm (Thuro Arnold and Nils Baumann)/


Col. G. Barmarin; Spectre: G. Barmarin


Comments on activators and spectra:


fluorescence lifetimes of 202 and 914 ns (bi-exponential)


Best Locality for luminescence(*):


(*)Data are not exhaustive and are limited to the most important localities for fluorescence


Bibliographical Reference for luminescence:



Luminescence Reference on internet:



Mineralogical Reference on internet:


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

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

Search on Internet:

  Search for images on 'Google Image'

  Search for documents in English on Google

  Search for documents in any languages on Google

  Search on Wikipédia


 

Note: While all due attention has been paid to the implementation of the database, it may contain errors and/or accidental omissions. By nature, the database will always be incomplete because science always evolves according to new analysis.
A request providing no result means only that no such reference exists in the database, but it does not mean that what you are looking for does not exist, just not to our knowledge. If you think you have found an error or omission, please let us know via the contact page being sure to cite the source of information.

 


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