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大方山—葫芦峪金矿区位于华北地台南缘与北秦岭造山带的衔接过渡带,矿脉赋存于构造蚀变破碎带中。矿床各成矿阶段流体包裹体主要为气液两相包裹体,通过对各阶段包裹体分析得知,主成矿阶段流体包裹体均一温度范围在197℃~305℃之间,流体包裹体盐度范围在10.98~0.88wt%NaCl之间,包裹体气相成分中富含H2O和CO2,少量O2和N2,液相成分中相对富含K+、Na+、Ca2+、SO2-4、Cl-离子。流体包裹体研究表明,金矿床成矿流体为多来源的中低温流体。
Dafangshan - Gourdu gold deposit is located in the junction of the southern margin of North China Platform and the North Qinling orogenic belt, and the veins occur in the tectonic alteration and crustal zone. The fluid inclusions in each mineralization stage are mainly gas-liquid two-phase inclusions. Based on the analysis of the inclusions in each stage, the homogenization temperature range of fluid inclusions in the main metallogenic stage is between 197 ℃ and 305 ℃. The fluid inclusions The range of inclusions is between 10.98 and 0.88wt% NaCl. The gas inclusions are rich in H2O and CO2, a small amount of O2 and N2, while the liquid components are relatively rich in K +, Na +, Ca2 +, SO2-4 and Cl- ions. Fluid inclusion studies show that the ore-forming fluids of gold deposits are medium-low temperature fluids with multiple sources.