Database of luminescent Minerals


Chemical Formula: (Ba,K)4(Y,Ca)2Si8(B,Si)4O28F

Familly: Silicates

Status: IMA-A

Mineral for Display: No


UV Type Main color Intensity Observation Frequency
Short Waves (254 nm):      Pink Weak

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

No Data


Pale pink sheaf-like aggregates to 1 cm. From Dari-i-Pioz region of Republican Subordination, Tajikistan and associated with potentially fluorescent minerals pectolite, reedmergnerite and polylithionite.

Y-dominant analogue of Hyalotekite.

Main Activator(s) and spectrum:

Most Common Activator: Dy3+

Other activators:            Eu2+ , Ce3+ , Sm3+ , Tb3+ ,

Peaks in the spectrum (nm):

REE3+ replacing Y3+ or Ca2+

Dy3+ : 485, 578nm 

Tb3+ : 545nm 

Sm3+ : 600nm  

Eu3+ : 616nm 

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:

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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