Scheikundige formule: Ca12(Zr,Ti)4(Si2O7)4(O,F)8
Familie: Silicaten
Status: IMA-A
Kristal Systeem: Monoklieniek
Mineraal om tentoon te stellen: Nee
UV Type | Kleur | Intensiteit | Frequentie van de observatie |
---|---|---|---|
Korte Golven(254 nm): | Bleek geel | ||
Andere kleuren korte golven: | Gelig wit , Geelachtig , |
Voornaamste Activator: Ti4+
Andere activatoren: TiO6 ,
Pieks in het spectrum (nm):
large band near 580nm and two small bands at 318 and 397nm TiO6 : broad band at 525nm
The photoluminescence (PL) spectrum at 300 K consists of one large band near 580 nm and two small UV bands at 318 and 397 nm. The optical excitation spectrum of the bright yellow fluorescence consists of two bands near 220 and 250 nm. The temperature dependence of the PL intensity exhibits linear thermal quenching. Baghdadite from Fuka, Okayama Prefecture, Japan shows a bright yellow fluorescence under UV (Hg 253.7 nm) excitation (Sidike et al. 2006) which was ascribed to the existence of titanium. Gaft study of decay time revealed that it is equal of approximately 10 μs, which corresponds to TiO6 emission properties.
(*)Gegevens zijn niet exhaustieve, ze zijn beperkt tot de meest belangrijke plaatsen voor fluorescentie
Images:
http://www.mindat.org/show.php?name=Baghdadite
http://webmineral.com/data/Baghdadite.shtml
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