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对金顶超大型铅 锌矿床成矿阶段形成的黄铁矿中流体包裹体的氦、氩同位素的研究结果表明 ,成矿流体的40 Ar/ 3 6Ar≈ 30 1 .7～ 385 .7,3 He/ 4 He≈ 0 .0 3～ 0 .0 6Ra,成矿流体属于饱和空气的表生水 .在此基础上 ,对氦、氩、硫、铅同位素耦合关系的研究进一步确定出该矿床成矿流体的形成演化过程为 :饱和空气的大气成因地下水下渗增温→通过水 岩作用从盆地地层中获取硫和氯以及放射成因的氦和氩→浸取盆地底部幔源火成岩中的铅和锌→含矿流体回返上升成矿 .由于这一过程的结果 ,而使成矿流体留下了地壳放射成因氦、(叠加有部分放射成因40 Ar的 )大气氩、地壳成因硫和幔源铅的同位素组成特征 .
The results of helium and argon isotope studies of fluid inclusions in pyrite formed during the mineralization of the Jinding ultra-large lead-zinc deposit indicate that the 40 Ar / 3 6Ar ≈ 30 1.7 ~ 385.7,3 He / 4 He ≈ 0.30 ~ 0.06Ra, the ore-forming fluid belongs to the superficial water of saturated air.On this basis, the study of the isotope coupling of helium, argon, sulfur and lead further confirmed that the deposit The formation and evolution of ore fluids are as follows: Atmospheric formation of saturated air Infiltration and warming of groundwater → acquisition of sulfur and chlorine from sedimentary basins by water-rock and radiogenic helium and argon → leaching of lead from mantle-derived igneous rocks at the base of the basin and Zinc → ore-bearing fluids back up mineralization. As a result of this process, the ore-forming fluid left behind the crustal radiogenic helium, atmospheric argon (superimposed with 40 Ar radiations), crustal and mantle-derived lead Isotopic composition characteristics.