1. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
2. Southwest Institute of Geological Survey, Geological Survey Center for Non-Ferrous Metals Resources, Kunming University of Science and Technology, Kunming 650093, China
3. Yuxi Mining Co., Ltd., Yuxi 653100, China
4. School of Geography and Engineering, Yuxi Normal University, Yuxi 653100, China