1. School of Geosciences and Info-Physics, Central South University, Changsha, Hunan, China
2. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of education, Central South University, Changsha, Hunan, China
3. Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, Hunan, China
4. Hunan Institute of Geological Survey,Hunan Bureau of Geology and Mineral Exploration and Development, Changsha, Hunan, China
5. College of Geomatics, Xi'an University of Science and Technology, Xi'an, China