Luminescence, fluorescence et phosphorescence des minéraux: bibliographie

JOHANNSENITE

Chemical formula: CaMn⁺²Si₂O₆

Family: Silicates

Status: IMA-A (GP)

Crystal system : Monoclinic

Display mineral: NON

Luminescence:


Longwave UV (365nm) colors:	Dark Orange /Tawn , Yellow ,
	Intensity LW:Very weak
Midwave UV (320nm) colors:	Not fluorescent ,

Shortwave UV (254nm) colors:	Not fluorescent ,

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

No data

Activator(s) and spectrum:

No data

No spectrum yet

Comments on spectrum and activators:

It was added to the list of fluorecent minerals of Franklin in 2014 after a study of all the sample of the Franklin Museum with blue light by Charles Mazel and Earl R Verbeeck. (see bibliography)

Johannsenite is best excited under true blue (440-450nm) light and show a yellow luminescence. in LW the response is so weak that it was not considered as fluorescent before this study.

Best localities for fluorescence (*):

Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA;

(*)The data are not exhaustive and are limited to a few remarkable localities for fluorescence

Bibliographic reference for luminescence:

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.