MINERALS FROM METEORITES EJECTED FROM THE MARTIAN SURFACE WILL BE ANALYZED FOR HYDROGEN AND ITS ISOTOPES AT THE ASU SIMS FACILITY WITH THE GOAL OF UNDERSTANDING HOW MUCH H2O WAS DISSOLVED IN THE MAGMAS THAT COOLED TO FORM THE OBSERVED ROCKS AND HOW IT MIGHT HAVE BEEN RE-DISTRIBUTED DURING DEGASSING COOLING AND ALTERATION.