[1] Univ Hong Kong, Dept Earth Sci, Hong Kong 100083, Hong Kong, Peoples R China
[2] China Univ Geosci, S Sch Earth Sci & Resources, Beijing 430074, Peoples R China
[3] China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China
[4] China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 610065, Peoples R China
[5] Chengdu Univ Technol, Dept Geochem, Chengdu, Peoples R China