Bethany L Ehlmann^1,2, Tullis C Onstott³, Max L Coleman¹, Nathaniel E Putzig⁴ and Barbara Sherwood Lollar⁵, (1)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (2)California Institute of Technology, Geological and Planetary Sciences, Pasadena, CA, United States, (3)Princeton University, Department of Geosciences, Princeton, NJ, United States, (4)Planetary Science Institute, Lakewood, CO, United States, (5)University of Toronto, Earth Sciences, Toronto, ON, Canada