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三家一带金矿床赋存在太古界变质岩系,受北东向弧形断裂构造控制。矿脉产于三家控矿断裂构造及其上盘的次级储矿构造中,呈北北东向和北东东向展布。矿石类型主要为黄铁矿石英脉型、蚀变破碎带黄铁矿细脉浸染型。
The three gold deposits occur in the Archean metamorphic rocks and are controlled by the NE-trending arc fracture structure. The veins are produced in the three ore-control fracture structures and their secondary deposits in the hanging wall structure, showing a north-north east and northeast-east distribution. The ore types are mainly pyrite quartz vein type and alteration broken zone pyrite vein type.