Scheikundige formule:Zie CORINDON
Familie: Oxiden en Hydroxiden
Status: NON APPR
Kristal Systeem: Rhomboedrisch
Mineraal om tentoon te stellen: Ja
Fluorescerende variëteiten: anyolite,UV Type | Kleur | Intensiteit | Frequentie van de observatie |
---|---|---|---|
Lange Golven (365nm): | Rood | Sterk | Midden Golven (320 nm): | Rood | Middelmatig | Korte Golven(254 nm): | Rood | Middelmatig |
Lange golf foto (365nm)
Rubis, UV LW,
Luc Yen, Vietnam,
Photo & Col. G. Barmarin
Foto galerij:
...Naar de volledige galerij (5 beelden in totaal)
Thermoluminescencie: Ja
Anyolite: corindon in zoïsite and pargasite rock mined in Tanzania. Prilep rubies in the Republic of Macedonia appear to be a mixture of diaspore and corundum. They have the particularity of having an orange fluorescence in some areas and a red (classic) fluorescence in others with rarely also a yellow fluorescence at the top or center of the crystals. Orange fluorescence could be attributed to diaspore (Mn2+ replacing Al3+ with a charge compensation mechanism see diaspore) and ruby red (Cr3+ replacing Al3+). Margarite (green mica) included in corundum emits also a white to slightly greenish fluorescence (see bibliography below) The slight almost linear displacement of the wavelength of the R1 and R2 lines with pressure (several GPa) makes it possible to measure colossal pressures with a certain degree of accuracy.
Voornaamste Activator: Cr3+
Pieks in het spectrum (nm):
Cr3+ replacing Al3+ : Lines at 692.8 (693), 694.3nm (sharp R1 and R2 lines) Cr3+ : 658.2 , 668.2 , 674.1 , 680 (small lines) N-lines (Cr3+ pairs) : 705.8 , 712nm (small lines)
Spectrum: Michael Gaft, Petah Tikva, Israel. Plot: Institute of Mineralogy, University of Vienna, Austria, with permission of the authors.
Vers la galerie de spectres (1 spectres au total)
Activator: Cr3+ replacing Al3+ giving strong well known 2E->4A2 lines with long decay time; Besides that, much weaker narrow lines present, which are connected with Cr-pairs and more complicated complexes (so called N-lines) (Tarashchan 1978). Lifetime of the R-line: 3,6ms;
(*)Gegevens zijn niet exhaustieve, ze zijn beperkt tot de meest belangrijke plaatsen voor fluorescentie
Images:
http://www.mindat.org/show.php?name=Ruby
http://webmineral.com/data/Ruby.shtml
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