1. MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China
2. Department of Earth and Planetary Sciences, McGill University, 3450 University Street, Montreal H3A 0E8, Canada
3. Key Laboratory of Continental Dynamics, Department of Geology, School of Geosciences and Info-physics, Central South University, Changsha 410083, PR China