1. School of Geosciences and Info-Physics, Central South University, South Lushan Road, Changsha 410083, China
2. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Central South University, Ministry of Education, Changsha 410083, China
3. Key Laboratory of Non-Ferrous Resources and Geological Hazard Detection, Changsha 410083, China