Database of luminescent Minerals


Chemical Formula: CaMn2+[SiO3(OH)](OH)

Familly: Silicates

Status: IMA-A

Crystal System: Orthorhombic

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Red Weak
Short Waves (254 nm):      Red Medium
Other colors LW:     
Violet red ,
Other colors SW:     
Violet red ,

Daylight Picture

OLMIITE (POLDERVAARTITE), N'Chwaning Mine, Kuruman,
Northern Cape Province, South Africa; Col. G.Barmarin; Photo: G. Barmarin

Long Waves Picture (365nm)

OLMIITE (POLDERVAARTITE), N'Chwaning Mine, South Africa;
Col. G.Barmarin; Photo: G. Barmarin

Short Waves Pictures (254nm)

OLMIITE (POLDERVAARTITE), N'Chwaning Mine, South Africa;
Col. G.Barmarin; Photo: G. Barmarin


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

No Data


It seems that fluorescing POLDERVAARTITE from N'Chwaning Mines is in fact OLMIITE a Mn2+ dominant analogue of Poldervaartite. (

Main Activator(s) and spectrum:

Most Common Activator: Mn2+

No spectrum for the moment

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:

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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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