Found: Elusive Martian Mineral (IMAGE) Brown University Caption Brown University graduate student Bethany Ehlmann found the elusive mineral carbonate on Mars, bolstering the chances that life may have existed on the red planet and evidence of primitive forms may remain. Credit John Abromowski, Brown University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.