ChemCam on Curiosity provides a large and varied geochemical dataset available for the planetary community that includes elemental compositions from more than 6,000 individual points on over 1,000 geological targets along the rover’s traverse.

The ChemCam team has recently completed a new calibration model that provides significantly more accurate results for the major element abundances. While the previous calibration model provided good results for fine-grained sedimentary targets near the average Mars composition, the new calibration increases the accuracy overall and provides significant improvements to mineral end-members, particularly silica-rich observations such as those of plagioclase. The re-calibrated ChemCam data are now available on the Planetary Data System server at http://pds-geosciences.wustl.edu/msl/msl-m-chemcam-libs-4_5-rdr-v1/mslccm_1xxx/data/moc/.