OLMIITE

 


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

Family: Silicates

Status: IMA-A

Crystal system : Orthorhombic

Display mineral: NON

 

Luminescence:

Longwave UV (365nm) colors:

         


Red , Violet red ,

Intensity LW:Weak

Shortwave UV (254nm) colors:

         


Red , Violet red ,

Intensity SW:Medium

Daylight picture


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

Longwave (365nm) picture


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

Shortwave (254nm) picture


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

 

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

No data

Comments:

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

Activator(s) and spectrum:

Activator(s): Mn2+ ,

No spectrum yet

Best localities for fluorescence (*):

N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa;

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

Bibliographic reference for luminescence:

Mineralogical reference on the Internet:

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

  http://webmineral.com/data/Olmiite.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.