Figure 3
Pre-edge spectra of the reference compounds staurolite, FeO, FePO4 and α-Fe2O3 and their binary mechanical mixtures from high-resolution transmission-mode XANES data, extracted using the inclined arctangent model function and fit with pseudo-Voigt peak functions. Transitions centred above 7115 eV (plotted in dotted lines) were omitted in the analysis. The parent XANES spectra are given in Fig. S1. The mixing ratios were determined using linear combination analysis of the normalized XANES spectra. |