1. Center for Advanced Radiation Sources University of Chicago Chicago Illinois 60637 USA
2. Department of the Geophysical Sciences University of Chicago Chicago Illinois 60637 USA
3. Department of Earth and Planetary Sciences University of New Mexico Albuquerque New Mexico 87131 USA
4. Hawai’i Institute of Geophysics and Planetology School of Ocean, Earth Science, and Technology University of Hawai’i at Mānoa Honolulu Hawaii 96822 USA
5. Department of Geoscience University of Nevada Las Vegas Nevada 89154 USA