Database of luminescent Minerals


DOUBTFULL FLUORESCENCE but cited by some authors

Chemical Formula: (Mn+2,Mg)6Zn3(AsO4)2(SiO4)(OH)8

Familly: Silicates

Status: IMA-GP

Crystal System: Orthorhombic

Mineral for Display: No


UV Type Main color Intensity Observation Frequency

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

No Data

Main Activator(s) and spectrum:

No data

Comments on activators and spectra:

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)

Holdenite is best excited under true blue (440-450nm) light and show a dull olive-green luminescence. In LW there is no response and it was not considered as fluorescent before this study. Only a single specimen was tested and further study must be conducted. It could be that the yellow-green luminescence of willemite under the Holdenite excited by the powerfull blue led through this mineral is filtered by the pinkiish color of holdenite letting only a dim orange-yellow color to pass through.

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:

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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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