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早元古界岔河变质岩中铜矿石黄铜矿的Ｐｂ－Ｐｂ等时线年龄为９５１±３６Ｍａ，属于晋宁运动早期的成矿作用。矿石稀土分配模式与围岩相似，二者均以富轻稀土为特征，Ｅｕ轻微亏损，矿床成因与含铜变质岩系有关。黄铜矿的δ３４Ｓ值分布范围为－１２．４７‰－－５．３２‰，平均值为－８．９３‰。含矿岩系形成于近海开放体系中。微量元素研究表明，区域地层Ｃｕ、Ｍｏ、Ｓ的丰度较高，比泰勒的地壳丰度值高３－１０倍。Ｃｕ在矿化过程中，变质作用和构造控制有重要意义，地层中的成矿元素在有利的构造部位沉淀，形成浸染状矿化和石英硫化物脉。该矿床属于火山－沉积变质矿床。
The Pb-Pb isochron age of the copper ore chalcopyrite in the Early Proterozoic Chajian metamorphic rocks is 951 ± 36Ma, belonging to the early mineralization of the Jinning Movement. The mode of REE distribution is similar to that of the surrounding rock. Both of them are characterized by light and light rare earths, with a slight loss of Eu. The ore deposit is related to the copper-bearing metamorphic rocks. The distribution of δ34S value of chalcopyrite ranged from -12.47 ‰ to 5.32 ‰ with an average of -8.93 ‰. Ore-bearing rocks formed in the open sea system. Trace element studies show that the abundance of Cu, Mo, S in the regional formations is higher than that of Taylor’s crustal abundance by 3-10 times. During Cu mineralization, metamorphism and tectonic control are of great significance. The metallogenic elements in the formation are precipitated in the favorable structural parts and form disseminated mineralization and quartz sulfide veins. This deposit belongs to the volcano-sedimentary metamorphic deposit.