1. School of Earth and Space Sciences, Peking University, Beijing 100871, China
2. Center for High Pressure Science and Technology Advanced Research, Beijing 100094, China
3. Bayerisches Geoinstitut, University of Bayreuth, Bayreuth 95440, Germany
4. HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, U.S.A.
5. † Special collection papers can be found online at http://www.minsocam.org/MSA/AmMin/special-collections.html.