The elemental ratios were subsequently calculated from the plots in Figure Where the intensity associated with the K-edge of each element, Elemint, was divided by the sum of the three elemental intensities at each position. This approach cancels out the effect of mass on the observed intensity for each element. The values ≤0 in Figure , carried over from the density plots in Figure , were due to phase artifacts in regions with no material translating into negative values after the difference calculation. Elemental ratios above one and below zero (see Ni and Co at 1.25-1.5 mm into particle 1 of 86%Ni, Figure ) are left in the plots for transparency, but they should not be regarded as actual elemental content and are best approximated to 1 and 0, respectively. We note that these outliers are found in the regions of the crystal outside of the domains of highest confidence defined above and in the SI. Table : Selection of elemental ratios sampled from representative points in Figure .