Database of luminescent Minerals


CALOMEL


Chemical Formula: alpha Hg2Cl2

Familly: Halides

Status: IMA-GP

Crystal System: Tetragonal

Mineral for Display: No


Luminescence:


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

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


No Data

Comments:


Fluo brightest under longwave than shortwave contrarly to similar fluorescing calcite;  

The previously reported fluorescent Terlinguaite and Corderoite (two mercury minerals) seems to bee both non fluorescent.


Main Activator(s) and spectrum:


Most Common Activator:

Peaks in the spectrum (nm):

No spectrum for the moment

Comments on activators and spectra:


Synthetic calomel used in chemical lab is also luminescent.Jack De Ment studied the luminescence spectrum of calomel in 1943. It consist of a bright red band extending from 580nm to 640nm under SW excitation.

Activator: "self-activated", the luminescence is produced by electron transfer between paired mercury atoms in different ionization states.
Synthetic calomel used in chemical lab is also luminescent.Jack De Ment studied the luminescence spectrum of calomel in 1943. It consist of a bright red band extending from 580nm to 640nm under SW excitation.


Best Locality for luminescence(*):


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


Bibliographical Reference for luminescence:



Mineralogical Reference on internet:


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

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

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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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