Key;
Laboratory;
of;
Marginal;
Sea;
Geology,;
Guangzhou;
Institute;
of;
Geochemistry,;
Chinese;
Academy;
of;
Sciences,;
Guangzhou510640,;
China;
Graduate;
University;
of;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100049,;
China;
State;
Key;
Lab;
of;
Ore;
Deposit;
Geochemistry,;
Institute;
of;
Geochemistry,;
Chinese;
Academy;
of;
Sciences,;
Guiyang;
550002,;
China;
Coastal;
Studies;
Institute,;
Louisiana;
State;
University,;
Baton;
Rouge,;
LA;
70803,;
USA;