Characteristics and Geological Implications of Mineral Chemistry and Fluid Inclusions in Huxu Au-Pb-Zn Ore Deposit,Jiangxi Province
To study the genesis of ore deposits in the Dongxiang volcanic basin,the Huxu Au-Pb-Zn deposit was selected as the research object,and a detailed study of quartz trace elements,fluid inclusions thermometry and chemical compositions of chlorite was carried out.The results indicate that the main element substitution mechanism is Al3++Li+ = Si4+.The pH of the ore-forming fluids is fluctuated episodically.The fluid inclusions are mainly gas-liquid type.The chlorite formed in an environment with relatively high sulfur fugacity and low oxygen fugacity.The ore-forming temperature is estimated to be 210-280℃.Combined with previous studies,it suggests that the Huxu deposit evolved with varying mixing ratio of magmatic fluids and meteoric water,accompanied by fluid-rock interaction,leading to the precipitation of ore veins in the opening fractures.The Huxu deposit is considered as epithermal deposit,with buried porphyry body.
trace element of quartzfluid inclusionchloriteHuxu Au-Pb-Zn depositDongxiang volcanic basinore deposit geology
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