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Figure 6
Images of the region of interest selected for a natural rock thin section. (a) Optical view showing the chlorite, phengite and quartz minerals, respectively, in the lower, middle and higher part of the image. (b) Qualitative iron content mapping, based on the edge-jumps of the XANES spectra. (c) Qualitative iron redox mapping, based on the position of the absorption edges of the XANES spectra. (d) Qualitative iron speciation mapping, based on the absorbance contrasts of the XANES spectra at 7138 eV.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 13| Part 5| August 2006| Pages 351-358
doi:10.1107/S0909049506026938
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