Jin Liu, Stanford University, Stanford, CA, United States; Center for High Pressure Science & Technology Advanced Research, Beijing, China, Ruilian Tang, Center for High Pressure Science &Technology Advanced Research, Changchun, China, Zhixue Du, Guangzhou Institute of Geochemistry, CAS, Guangzhou, China, Vitali B Prakapenka, University of Chicago, Center for Advanced Radiation Sources, Chicago, IL, United States, Jiuhua Chen, Florida International Univ., Miami, FL, United States, Qingyang Hu, Geophysical Laboratory of the Carnegie Institution for Science, Washington, DC, United States, Ho-kwang Mao, Center for High Pressure Science & Technology Advanced Research, Shanghai, China and Wendy L Mao, Stanford-Geological & Env Sci, Stanford, CA, United States