Database of luminescent minerals 

KAPITSAITE-(Y)

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

Family: Silicates

Status: IMA-A

Display mineral: NON

Luminescence:

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

No data

Comments:

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.

Activator(s) and spectrum:

Activator(s): Dy³⁺, 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 yet

Best localities for fluorescence (*):

• The moraine of the Dara-i-Pioz glacier, Garm region, Tajikistan ;

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

Bibliographic reference for luminescence:

• Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
• Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,

Reference for luminescence on the Internet:

Mineralogical reference on the Internet:

  http://www.mindat.org/show.php?name=Kapitsaite-(y)

  http://webmineral.com/data/Kapitsaite-(y).shtml

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