SEM photomicrograph of Murchison fragment analyzed tomographically using focused beam XRF/XRD. Dashed yellow line shows the position of the reconstructed tomographic slice. (middle) XRF tomographic reconstruction of Mn, Fe and Ni Kα fluorescence intensity. (right) XRD tomographic reconstruction of the measured intensity of scattering vectors (Q) at 1.50, 1.76 and 1.78 Å-1. Reconstructed Q-intensity patterns show that blue area in the lower right is consistent with a mixture of forsteritic olivine and hedenbergite, while green areas are largely serpentine group minerals