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青海省按纳格金矿位于昆中多金属成矿带,矿区地层为古元古界白沙河组、下古生界纳赤台群和第四系沉积物。赋矿地层为白沙河组和纳赤台群,白沙河组岩性为云母石英片岩、大理岩、斜长角闪片岩;纳赤台群岩性为绿泥石英千枚岩、硅质板岩等(陈有炘等,2013)。区内断裂构造发育,近东西向断裂与主矿脉关系密切。岩浆活动强烈,以华力西-印支期中酸性岩浆岩最为发育,岩性有斜长花岗
The Nagoya gold deposit is located in the Kunzhong polymetallic metallogenic belt in Qinghai Province. The strata of the deposit are the Baishahe Formation in the Paleoproterozoic and the Neochicai Quaternary sediments in the Paleozoic. The ore-bearing strata are the Baishahe Formation and the Nachitai Group. The Baishahe Formation lithology is mica-quartz schist, marble and plagioclase flickrite. The lithology of the Nachitai Group is chlorite-quartz phyllite and siliceous slate Etc. (Chen Youyi et al., 2013). The fault structure is developed in the area, and the faults near the east and the west are closely related to the main veins. Magmatic activity is strong, with most of the middle-acidic magmatic rocks in the Huali-Indo-Indosinian period with lithic granite