ADVANCED MATERIALS & PROCESSES | JANUARY 2026 1 7 albite. This uncertainty was likely due to these grains being a solid solution between albite and anorthite. The XRD data resulted in complicated patterns with numerous peaks. This was expected given the complex nature of the samples. The minerals found through the EBSD analysis were used to fit the XRD profiles. A representative XRD pattern and profile is shown in Fig. 3. While not every peak was identified in the XRD profile fitting results, the major constituents are certainly identified, as indicated by the relatively flat residual line. EBSD was more capable at identifying trace phases in the samples, when present within the analysis area, while the XRD data is more indicative of the phases and phase amounts in the bulk sample. This is exemplified by the large titanomagnetite grain identified in the center of the EBSD map, which accounted for nearly 5 wt% of that sample area. In the XRD data, which is more representative of the bulk sample, magnetite was only identified as less than 1 wt% of the sample composition. Likewise, natrolite was identified in at least one of the EBSD maps but was not fit as a significant component from the XRD data. In this way, EBSD and Fig. 2 — Representative EBSD map plus local phase statistics. Fig. 3 — XRD pattern (black) with fitted profile (magenta) for one sample. The residual between the pattern and profile is shown in red at the top of the plot. Also shown are the mineral constituents and their calculated weight percentage values.
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