1. College of Resources and Environmental EngineeringGuizhou University Guiyang China
2. State Key Laboratory of Ore Deposit Geochemistry, Institute of GeochemistryChinese Academy of Sciences Guiyang China
3. Faculty of Land Resources EngineeringKunming University of Science and Technology Kunming China
4. Yunnan Copper GroupKunming Prospecting Design Inst China Nonferrous Kunming China