State Key Laboratory of Geological Process and Mineral Resourses;
China University of Geosciences;
Beijing 100083;
Institute of Mineral Resources;
Chinese Academy of Geological Sciences;
Beijing 100037;
Institute of Geochemistry;
Chinese Academy of Sciences;
Guiyang;
Guizhou 550002;
Earth Science Department;
Sun Yat-Sun University;
Guangzhou;
Guangdong 510275 Earth Science Department;
Sun Yat-Sun University;
Guangzhou;
Guangdong 510275;