Keywords Au-bearing sulfide;submicro-gold;negative-valence gold;gold-cluster;gold-parti-cle;surface core-level shift of gold;binding energy shift of gold;isomer shift;

• 含金硫化物矿物;次显微金;负价金;金团簇;金微粒;金的表面化学位移;金的结合能位移;同质异能位移;