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水晶屯金矿区金矿化主要与黄铁矿化、硅化、绢云母化和钾长石化有关,矿体严格受断裂构造控制。通过对矿体硫同位素、氢氧同位素、矿物包裹体及控矿因素等方面的分析,推测其成矿物质来源于桑干群老变质地层及深源岩浆热液,成矿流体主要来自岩浆水,岩浆活动为矿体提供热动力;阐明了该矿的成因类型,认为水晶屯金矿是一个中—高温中浅成热液充填交代型金矿床。
The gold mineralization in the Jingtun gold mining area is mainly related to pyrite, silicification, sericitization and potassium feldspar. The ore body is strictly controlled by the fault structure. Based on the analysis of sulfur isotopes, hydrogen and oxygen isotopes, mineral inclusions and ore-controlling factors, it is speculated that the ore-forming materials are derived from the old metamorphic strata and deep source magmatic hydrothermal fluids in the Sanggan Group. The ore-forming fluids are mainly derived from magmatic water The magmatic activity provides the thermodynamic force for the ore body. The genetic type of the ore is elucidated. It is believed that the Jingtun gold deposit is a medium-high temperature medium-temperature hydrothermal filling metasomatic gold deposit.