| This paper summarizes the results of the previous data,based on the study of the basictheories and methods of regional metallogenic theory,modern geology,the science of mineraldeposits and relative professionals. Combined the regional geological background withtectonic-magmatic evolution and mineralization, it summarizes the basic geology,geologicalfeatures of mineral deposits,rock geochemistry, genesis type and mineralization regularity.Finally, the future situation of the copper-gold resources in the area is evaluated and the newideas for further mineral exploration are proposed.By means of the field geological investigation of Nurigai copper-gold mine area inright-banner of Alxa of Inner Mongolia and the analysis and tests of the rock geochemicalcomposition, trace elements and REE content of the copper-gold ore body and the quartzdiorite,the author realized Kuhewula quartz diorite is not only the surround rock but also theore-forming rock of the deposit, the ages of the quartz-diorite being 278.0±2.0Ma formed inearly Permian period, according to 40Arï¼39Ar isotopic dating and being the calc-alkalineseries, Chondrite-normalized REE patterns being LREE slightly richer,LREE/HREE 6.83～6.92,(La/Yb)N 7.23～7.29,δEu 0.93～0.98,andδCe 0.90～0.91,large-ion lithophileelements (Ba,Sr) and incompatible elements(Zr,Hf) being enriched and similar to thecalc-alkaline series of active continental margins. The reseach results in the conclusion ofKuhewula quartz diorite body is the product of magma evolution within deep-source oforogenic belt formed in the condition of plate-collision with the geological and geochemicalconditions forming magma controlled copper-gold deposit.According to the output form of the ore,Nurigai copper-gold was formed under the controlof the faults and it is a kind of magmatic hydrothermal copper-gold mine under the conditionsof fracture-controlled late Variscan plate collision.
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