Database of luminescent Minerals


WALSTROMITE


Chemical Formula: BaCa2Si3O9

Familly: Silicates

Status: IMA-A

Crystal System: Triclinic

Mineral for Display: No


Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Pink
Mid waves (320 nm):      Orange Strong
Short Waves (254 nm):      Orange Medium
Other colors MW:               
Orangy yellow , Dark Orange /Tawn , Salmon pink ,
Other colors SW:                    
Dark Orange /Tawn , Orange Red , Pink , Salmon pink ,

Daylight Picture


WALSTROMITE & CELSIAN,
From the Esquire No. 8 claim, Big Creek, CA USA
Photo and Copyright: Cran Cowan
Used with permission of the author;

Long Waves Picture (365nm)


WALSTROMITE (not fluo) & CELSIAN (blue), UVLW
From the Esquire No. 8 claim, Big Creek, CA USA
Photo and Copyright: Cran Cowan
Used with permission of the author;

Mid Waves Pictures (330nm)


WALSTROMITE (orange) & CELSIAN (blue), UVMW
From the Esquire No. 8 claim, Big Creek, CA USA
Photo and Copyright: Cran Cowan
Used with permission of the author;

Short Waves Pictures (254nm)


WALSTROMITE (orange) & CELSIAN (blue), UVSW
From the Esquire No. 8 claim, Big Creek, CA USA
Photo and Copyright: Cran Cowan
Used with permission of the author;

 

Galerie de photos:

            ...

     To the gallery (4 images in the gallery)


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


UV Type Color Intensity Observation Frequency
Mid Waves (320 nm): Orange Strong
Short Waves (254 nm): Orange Strong
 

Comments:


Barium analogue of MARGAROSANITE


Main Activator(s) and spectrum:


Most Common Activator: Mn2+

Other activators:            Eu2+ , Nd3+ , Tm3+ ,

Peaks in the spectrum (nm):



Comments on activators and spectra:


Time-resolved luminescence spectra are characterized by Tm3+, Eu2+ and Mn2+ centers (Gaft et al. 2013).

Excitation by CW laser with 532 and 785 nm revealed several luminescence bands and lines supposedly connected to Mn2+ and Nd3+


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:


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

  http://webmineral.com/data/Walstromite.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.

 


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