Workgroup    Fluorescence
Spectra Borates and Nitrates
Measured with: Ocean Optics Jaz  spectrometer, 600µm core optical fibre and a diodelaser 405 nm.
The  fluorescence of the calcium-dihumate complex in acetone, compared to some of the orange fluorescing specimens from the fluorescence survey of the Turkish borate minerals. The spectra have been genormalised.
 
The tell-tale vibronic emission peaks of the calcium complex with humic acids are much more outspoken in the spectrum of the weakly red fluorescing crystal faces. Faster growth allowed for a better absorption of this substance in the largest crystal faces than in the smaller ones.
 
A real broadband spectrum, as we expect from enclosed organic material, various defects of non-interconnected oxygen and replacement of borate ion by other anions.
In This spectrum two blazes of the diffraction grating and the second order of the excitation peak are removed.
Tunellite
 
Copyright © 2014 by Axel Emmermann  ·  All Rights reserved  ·  E-Mail: fluorescentie@minerant.org
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