Guangzhou;
Institute;
of;
Geochemistry,;
Chinese;
Academy;
of;
Sciences,;
Guangzhou;
510640,;
China;
Department;
of;
Earth;
&;
Planetary;
Sciences,;
Hiroshima;
University,;
Higashi;
Hiroshima;
City,;
Hiroshima;
739-8526,;
Japan;
Department;
of;
Earth;
Sciences;
and;
Environmental;
Engineering,;
Central;
South;
University,;
Changsha;
410083,;
China;
The;
Kyushu;
University;
Museum,;
Kyushu;
University,;
Kakozaki,;
Fukuoka;
812-8581;
Japan;
Photon;
Factory,;
National;
Laboratory;
for;
High;
Energy;
Physics;
(KEK),;
Oho;
1-1,;
Tsukuba,;
Ibaraki;
305,;
Japan;