The Petro-Pot seminar will be given by Elisabeth Cottrell this week on: Friday, January 12th 2018 at 9:30 AM : LMV, Seminar-Room. Elizabeth Cottrell (National Museum of Natural History, Smithsonian Institution)  Mantle Oxygen Fugacity http://mineralsciences.si.edu/staff/pages/cottrell.htm https://youtu.be/qrP9n3FQWWw