Database of luminescent Minerals
CHLORARGYRITE
Chemical Formula: AgCl
Familly: Halides
Status: IMA-GP
Crystal System: Isometric
Mineral for Display: No
Associated names (luminescent varieties, discredited names, synonymes etc.): embolite,Luminescence:
| UV Type | Main color | Intensity | Observation Frequency |
|---|---|---|---|
| Long Waves (365nm): | Blue | ||
| Other colors LW: | Green , | ||
Phosphorescence (in the common meaning of the term) seen by naked eye:
No Data
Comments:
From a silver ore at Maikain, Kazakhstan, fluorescence is blue under LW. From another silver ore location in Kasmanchi, Uzbeckistan, a bromian Chlorargyrite (Embolite?) fluoresces green under LW.
Main Activator(s) and spectrum:
Most Common Activator: Ag+
Other activators: D-A (Donor-Acceptor) ,
Peaks in the spectrum (nm):
D-A (Donnor - Acceptor): 480-490nm Broad band around 525 nm with decay time of ~2–3 μs (intrinsic)
Comments on activators and spectra:
Silver halides are capable to intrinsic luminescence. It was found by steady-state luminescence spectroscopy that silver halides, such as chlorargyrite and embolite, demonstrate luminescence at low temperatures. Such emission was explained in energy band scheme by donor-acceptor recombination. Under powerful laser excitation, such luminescence was detected even at room temperature. The spectra are evidently connected with the same luminescence centers (Gaft et al. 1989). Laser-induced time-resolved luminescence spectrum of chlorargyrite demonstrates a relatively narrow green band with short decay time of ~2–3 μs (Gaft).
Best Locality for luminescence(*):
- Maikain, Kazakhstan;
- Kasmanchi, Uzbeckistan;
(*)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 ,
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Chlorargyrite
http://webmineral.com/data/Chlorargyrite.shtml
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