acquiring two-dimensional diffraction patterns. Additionally, a silicon drift detector, positioned at 90◦ with respect to the incoming beam, allowed the simultaneous registration of fluorescence spectra, thereby combining XRF tomography (element distributions in a virtual cross section) and XRD tomography (crystallographic phase distributions). Figure 2 summarizes the combined μ-XRF/XRD tomography setup as well as the pattern decomposition method explained earlier.