The Songjianghe gold deposit is located in the southeastern part of the Jiapigou–Haigou metallogenic belt, north of the North China Craton. The distribution of the ore body is governed by ductile shear zones and fractures oriented in the SN direction. The gold ore body consists of lenticular gold-bearing quartz veins. Mineralization can be divided into five stages: the quartz-oxidation stage (I), the pyrite-magnetite-quartz stage (II), the quartz-polymetallic sulfide stage (III), the telluride stage (IV), and the carbonate stage (V), with the main mineralization stages being III and IV. On the basis of lithological characteristics, three types of fluid inclusions were identified in the vein mineral assemblage: NaCl-H₂O (W-type), CO₂-H₂O (C-type), and a minor amount of pure CO₂ (pc-type). W-type and C-type inclusions coexist randomly around natural gold minerals in the same quartz grain, indicating that the mineralizing fluid is heterogeneous. The mineralizing fluids had a medium temperature and low to medium salinity based on micro temperature measurements of various inclusions. During the main mineralization phase, H-O isotope tests indicate that the mineralizing fluids are mantle-driven and mixed with atmospheric precipitation during mineralization. δ³⁴S data indicate that the mineralizing material originated from the mantle. The aforementioned characteristics suggest that Songjianghe is an orogenic gold deposit based on its dynamical background, with fluid immiscibility and sulfidation being the primary mechanisms of gold precipitation and enrichment.

松江河金矿位于华北克拉通北部夹皮沟-海沟成矿带东南部。矿体分布受延性剪切带和SN方向断裂的控制。金矿体由透镜状含金石英脉组成。成矿作用可分为五个阶段：石英-氧化阶段(I)、黄铁矿-磁铁矿-石英阶段(II)、石英-多金属硫化物阶段(III)、碲化物阶段(IV)和碳酸盐阶段( V），主要成矿阶段为III、IV。根据岩性特征，脉状矿物组合中识别出3种类型的流体包裹体：NaCl-H ₂ O（W型）、CO ₂ -H ₂ O（C型）和少量纯CO ₂（电脑型）。W型和C型包裹体随机共存于同一石英颗粒中的天然金矿物周围，表明成矿流体是非均质的。根据各种包裹体的微观温度测量，矿化流体具有中等温度和低至中等盐度。在主成矿阶段，H2O同位素测试表明，成矿流体是地幔驱动的，并在成矿过程中与大气降水混合。δ ³⁴ S数据表明矿化物质来源于地幔。上述特征表明，松江河金矿床是造山型金矿床，其动力学背景表明，流体不混溶作用和硫化作用是金矿沉淀富集的主要机制。