Orbital Evidence for Clay and Acidic Sulfate Assemblages on Mars and Mineralogical Analogs from Rio Tinto, Spain

Hannah H Kaplan1, Ralph Milliken1, David C Fernandez-Remolar2, Ricardo Amils3, Kevin Robertson4 and Andrew H Knoll5, (1)Brown University, Providence, RI, United States, (2)British Geological Survey Keyworth, Nottinghamshire, United Kingdom, (3)Centro de Astrobiologia (INTA-CSIC), Terrejon de Ardoz, Spain, (4)Brown University, Geological Sciences, Providence, RI, United States, (5)Harvard University, Department of Organismic and Evolutionary Biology, Cambridge, MA, United States