1. MLR Key Laboratory of Metallogeny and Mineral Assessment; Institute of Mineral Resources, Chinese Academy of Geological Sciences; Beijing 100037 China
2. State Key Laboratory of Geological Processes and Mineral Resources, School of Earth Sciences and Resources; China University of Geosciences; Beijing 100083 China
3. Department of Earth Sciences; University of Adelaide; SA 5005 Australia
4. Faulty of Earth Resources; China University of Geosciences; Wuhan 430074 China
5. Chang'an University; Xi'an 710064 China