Curiosity update: ‘Zapping the drill hole wall’

Sol 1140, October 20, 2015, update from USGS scientist Ken Herkenhoff: The ChemCam RMI images of the drill hole planned yesterday were successfully acquired and received, and were used today to plan 2 parallel LIBS rasters down the hole.  The additional LIBS raster should be useful in measuring variations in chemistry among individual sand grains and in detecting thin veins.  ChemCam and Mastcam will also observe a target dubbed “Marshall” to see whether silica enrichment extends along other fractures… [More at link]