The top part of the image shows a close-up of the rock named "Crest," taken by the remote micro-imager (RMI) on Curiosity's Chemistry and Camera (ChemCam) instrument above the analysis of the elements detected by using ChemCam's laser to zap the target. The spectral profile of Crest's light-colored vein is shown in red, while that of a basaltic calibration target of known composition is shown in black.
For the full image and caption read the annotated version.
Image Credit: NASA/JPL-Caltech/LANL/CNES/IRAP/LPGNantes/CNRS
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