1. Department of Earth Science and Engineering, College of Mining Engineering Taiyuan University of Technology Taiyuan 030024 China
2. Xinjiang Research Center for Mineral Resources, Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China
3. Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Natural Resources, Institute of Mineral Resources Chinese Academy of Geological Sciences Beijing 100037 China