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下吉宝沟金矿产在二长岩中 ,它的形成与二长岩关系密切 ,二长岩既是容矿岩又是含矿岩 .下吉宝沟二长岩是高碱度的偏碱性同熔型岩体 ,其硫同位素和稀土元素表明有一定的壳源物质混入 ,是岩浆演化晚期的产物 .二长岩岩体中北西向和北东向两组裂隙控制了矿体的产状 .下吉宝沟金矿形成于晚侏罗世 ,主要与黄铁矿化和毒砂化有关 ,硅化微弱 ,金矿化产生于二长岩成岩后期 ,成矿物质可能来自深部 .
Under the Jibaogou gold deposit in the monzonite, its formation is closely related to the monzonite, the monzonite is both ore-bearing ore and ore-bearing rock, and the lower Jibaogou monzonite is a high alkalinity In the same type of melt, its sulfur isotopes and rare earth elements indicate that some crustal materials are mixed and are the product of late magmatic evolution. The fissures in the northwest and northeast of the gabbro body control the ore body’s shape The lower Jibaogou gold deposit was formed in the Late Jurassic, mainly related to the pyrite mineralization and poison sandification. The silicification was weak and the gold mineralization occurred in the late diagenetic stage of the mafic rocks. The metallogenic material may come from the deep.