Database of luminescent Minerals


Chemical Formula: CaZnSiO4 H2O

Status: IMA-GP

Crystal System: Monoclinic

Mineral for Display: Yes


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

Daylight Picture

CLINOHEDRITE with Franklinite and minor Willemite,
Franklin, New Jersey zinc mine, USA;
Photo and Copyright: James Van Fleet

Short Waves Pictures (254nm)

CLINOHEDRITE (UVSW, fluo yellow-orange) with minor Willemite (green), Franklin, New Jersey zinc mine, USA;
Photo and Copyright: James Van Fleet


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

No Data


Pectolite and wollastonite from Franklin, New Jersey, USA, have the same luminescent color but the association with hardystonite is typical of clinohedrite.

Clinohedrite occurs sometime as an alteration of purple fluorescent hardystonite (see

Main Activator(s) and spectrum:

Most Common Activator: Mn2+

Peaks in the spectrum (nm):

Mn2+ : very broad band peaking at 576nm (70nm half-width)
Mn2+ : very broad band peaking at 608nm (200nm half-width)

Col. G. Barmarin; Spectre: G. Barmarin

Comments on activators and spectra:

Activator is Mn2+ substituting to Ca2+;

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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