The application of EPMA in research for native gold of Jinchangyu gold mineral deposit,Jidong Area

In this study,the native gold was investigated by means of the microscopic observation and electron probe microanalyzer(EPMA).This paper compared natural golds of two metallogenic phases,including the characteristics of output state and chemical compositions.The fineness of native gold was generally high.Metallogenic phase and mineral particle size affect the fineness of natural gold.