NATISITE
Chemical Formula: Na2(TiO)SiO4
Familly: Silicates
Status: IMA-A
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Short Waves (254 nm): | Bluish White | | | | | | |
Phosphorescence (in the common meaning of the term) seen by naked eye:
No Data
Comments:
A sodium titanium silicate. Two specimens reported, one from Kibina the other from Lovozero . Two different fluorescent colors.
Main Activator(s) and spectrum:
Most Common Activator: TiO6
Peaks in the spectrum (nm):
TiO6 : broad band peaking at +/- 440 - 460nm
Tb3+? : 525nm
Dy3+ : 580nm
Mn2+? replacing Na : 600nm
(Gorobets)
No spectrum for the moment
Comments on activators and spectra:
Cathodoluminescence: light-blue.
Best Locality for luminescence(*):
- Kedykverpakhk Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia;
- Khibiny Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia;
- Karnasurt Mt, Lovozero, Kola, Russia;
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- Luminescence Spectroscopy of Minerals and Materials, M. Gaft, R. Reisfeld, G. Panczer, Springer Editor, ISBN: 10 3-540-21918-8 ,
- 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=Natisite
http://webmineral.com/data/Natisite.shtml
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