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冯家场金矿床位于祁连—秦岭造山带接合部位,矿体赋存于震旦—奥陶系李子园群木其滩组第二岩性段的变质岩系中。关子镇—元家坪区域韧性剪切带是主要导矿、控矿构造。文章对矿床矿石类型、矿石结构构造、矿石矿物化学成分、主要有用组分赋存状态及其镶嵌关系特征进行了详细论述,指出:(1)矿床矿石类型、结构构造较简单;(2)矿石中有用元素主要有金、银、铜、铅、锌等;(3)矿石中含硫矿物主要为黄铁矿、黄铜矿、方铅矿、闪锌矿等,贵金属矿物为自然金、自然银、银金矿、金银矿等。通过对矿床中金的赋存状态、围岩蚀变等特征分析、研究,指出了该矿床找矿标志。
The Fengjiachang gold deposit is located at the junction of the Qilian-Qinling orogenic belt, and the orebodies occur in the metamorphic rocks of the second lithologic section of the Muqiathan Formation in the Aurora-Ordovician Group. Guanzi town - Yuanjiaping region ductile shear zone is the main guide ore, ore control structure. In this paper, the ore type, structural structure of ore, chemical composition of ore minerals, the state of main useful components and their mosaic relationship are discussed in detail. The main conclusions are as follows: (1) The type and structural structure of ore deposit are relatively simple; (2) (3) The sulfur minerals in the ore are mainly pyrite, chalcopyrite, galena, sphalerite, etc., the precious metal minerals are natural gold, natural Silver, silver and gold, gold and silver mines. By analyzing the characteristics of gold deposits in the deposit and the alteration of the surrounding rock, the prospecting sign of the deposit is pointed out.