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Figure 6
Color maps showing the contribution of different element combinations to the matrix and core of the pseudomorphed crystals (top) and the outer rind of the pseudomorphed crystals (bottom). Each pixel of the matrix map (top) is colored by an RGB combination proportional to the concentrations of Si, Al and O, as illustrated in the top-right triangle. The pixel color in the pseudomorph map (bottom) combines the concentrations of Fe, Ca and Mg in the same way, but additionally, the color intensity (color value) encodes the C concentration to distinguish regions containing carbonates. Two distinct areas within the outer rind are indicated by `b' and `c'.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 51| Part 4| August 2018| Pages 1050-1058
https://doi.org/10.1107/S1600576718007343
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