1. Ministry of Education, Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Central South University), Changsha, PR China
2. Key Laboratory of Non-ferrous and Geological Hazard Detection, Changsha, PR China
3. School of Geosciences and Info-Physics, Central South University, Changsha, PR China
4. School of Geographic Science, Hunan Normal University, Changsha, PR China