James Irving¹, Zhiwei Xu^1,2, Kyle M Lindsay³, John Bradford⁴, Peimin Zhu² and Klaus Holliger^1,5, (1)University of Lausanne, Lausanne, Switzerland, (2)China University of Geosciences, Wuhan, China, (3)Boise State University, Boise, ID, United States, (4)Colorado School of Mines, Golden, CO, United States, (5)Zhejiang University, Hangzhou, China