Israel’s cooler for the Chemin chemical analyser was brought into action for the first time when the Mars Curiosity Rover began to analyse its first soil samples. The first results confirmed that some strange bright particles were of Mars origin and not debris from the landing.
http://www.gizmag.com/curiosity-first-soil-sample/24635/
http://www.youtube.com/watch?v=neUJ5y4hrkE&feature=player_embedded