1. Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, P.R. China
2. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
3. Faculty of Earth Resources, State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
4. Department of Geology, Bayero University Kano, Kano State P.M.B 3011, Nigeria
5. Department of Earth and Environmental Sciences, Macquarie University, New South Wales 2109, Sydney, Australia