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乔尕山金矿床为产于中天山脆韧性剪切带中的石英脉型或破碎带蚀变岩型金矿床 ,南部矿床产于受剪切的志留泥盆系地层中 ,北部矿床产于受剪切的闪长岩体中 .不同阶段形成的含金石英脉及其赋矿围岩具有相似的稀土元素地球化学特征 ,呈轻稀土富集型 ,出现不明显的Eu负异常及明显的Tb和Er正异常 .成矿流体H、O同位素变化范围小 ,δ18OH2 O =4 4 5‰～ 10 95‰ ,δDH2 O=- 63 0‰～ - 4 2 0‰ ,其成矿物质具统一来源 ,即来自受剪切岩石(志留泥盆系地层及闪长岩体 )的均一的成矿物质及成矿流体
The Qiaoyashan gold deposit is a quartz vein type or crustal altered rock type gold deposit produced in the Tiantaishan brittle ductile shear zone. The southern ore deposit is produced in the shear-cut Silurian strata, and the northern ore deposit is produced in Shear-diorite body. The gold-bearing quartz veins formed at different stages and their ore-hosting rocks have similar REE geochemical characteristics and are characterized by light rare earth enrichment with an obvious Eu anomaly and obvious Tb and Er are positive anomalies.The H and O isotope variations of ore-forming fluids are small with δ18OH2O = 445% -1095% and δDH2O = -6.03% -420%, and their ore-forming materials have a uniform source , Ie uniform ore-forming materials and ore-forming fluids from shear-exposed rocks (Silurian Devonian strata and diorite bodies)