KAPITSAITE-(Y)
Chemical Formula: (Ba,K)4(Y,Ca)2Si8(B,Si)4O28F
Familly: Silicates
Status: IMA-A
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Short Waves (254 nm): | Pink | Weak | | | | | |
Other colors SW: | Pinkish White , |
Phosphorescence (in the common meaning of the term) seen by 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.
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(*):
- The moraine of the Dara-i-Pioz glacier, Garm region, Tajikistan ;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical 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 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Kapitsaite-(y)
http://webmineral.com/data/Kapitsaite-(y).shtml
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