【摘要】 采用硫同位素方法,对新疆巴音铜矿床硫化物和硫酸盐矿物进行硫同位素测定,获得硫化物和硫酸盐的δ34S值在-17.5‰～+10.0‰,硫同位素富集顺序为δ34S重晶石>δ34S黄铁矿>δ34S辉铜矿>δ34S黄铜矿。对矿床矿物包裹体测定及矿物稳定为-34.37～-38.42;场进行物理化学计算,获得成矿温度约250℃,logfO2为-2.3;pH值为3～6。对矿床δ34SΣS计算,获得logfs2为-8.59～-14.0;logfCO2δ34SΣS为+10‰,指示出矿石硫源来自岩浆与海水硫酸盐混合。更多还原

【Abstract】 The sulfide and sulphate mineral in the Bayin copper deposit, Xinjiang are analyzed by means of sulfur isotope method. It shows that the δ³⁴S value of sulfide and sulphate varies from -17.5‰ to +10.0‰, sulfur isotope enrichment order is δ³⁴S_barite>δ³⁴S_pyrite>δ³⁴S_chalcocite>δ³⁴S_chalcopyrite. Results from the test to the wrapped mineral body in the deposit and physical chemistry calculation to the mineral stable field show that the temperature is about 250℃ when the deposit forms, and that logf_CO2 ranges from -34.37 to -38.42, logfs₂ from -8.59 to -14.0, pH 3 to 6, and logf_CO2 is -2.3. The δ³⁴S_ΣS is +10‰ by calculating, indicating that the sulfur comes from mixture of magma and sulphate in sea water.更多还原