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三道岔金矿为一大型金矿床。该矿床受夹皮沟北西向弧型断裂带的控制，赋存于太古界鞍山群三道沟组下段条带状片麻岩（该队定为注入片麻岩）及斜长角闪岩带中（见图1）。大都是盲矿体，矿体赋存于蚀变破碎带中，为变质热液型含金石英脉。矿床已采到425米中段。
Sandaocha Gold Mine is a large gold deposit. This deposit is controlled by the northwest arc fracture zone of Jiapigou and occurs in the lower part of the Sandaogou Formation in the Archean Group. The gneisses (the team is designated as gneiss) and the amphibolite belt (See Figure 1). Most of them are blind orebodies, and the orebodies occur in alteration and crustal zones, which are metamorphic hydrothermal gold-bearing quartz veins. The deposit has been taken to 425 meters in the middle.