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河南西部的西峡石板沟金矿是一个与不规则石英细脉有关的金矿床,石英脉产于切穿闪长岩体的蚀变剪切带中,成矿围岩主要为闪长岩和辉长岩。剪切带中主要的蚀变有硅化、黄铁矿化、绢云母化、绿泥石化、钾长石化和碳酸岩化,近矿体蚀变围岩分带特征明显,从矿化中心向边部蚀变分带依次是:①硅化—黄铁矿化蚀变带;②黄铁矿化—钾长石化蚀变带;③黄铁矿化—绢云母化蚀变带;④绿泥石化—碳酸盐化蚀变带;⑤未蚀变辉长岩。细粒硫化物、不同时代的石英细脉和小型裂隙广泛分布于蚀变带中。该矿床中主要的矿化类型有含金石英脉型和产于剪切带中的蚀变岩型,依据蚀变分带和矿化类型,从钻孔中系统地采集了岩石样品,所有的样品做了部分微量元素和常量元素分析,利用常量元素研究了岩石质量平衡、体积
The Shixiagou gold deposit in western Henan Province is a gold deposit associated with irregular quartz veins. Quartz veins are produced in altered shear zones that cut through the diorite body. The metallogenic rock is mainly composed of diorite and Gabbro. The main alteration in the shear zone is silicification, pyritization, sericitization, chloritization, potassium feldspathization and carbonate rockification. The zoning characteristics of nearby ore body alteration rocks are obvious. From the mineralization center to the side The partial alteration zoning is: ① silicification - pyrite alteration zone; ② pyrite - potassium feldspathic alteration zone; ③ pyrite - sericite alteration zone; ④ chloritization - Carbonate alteration zone; ⑤ Non-altered gabbro. Fine-grain sulfides, quartz veins of different ages and small fractures are widely distributed in the alteration zone. The main types of mineralization in the deposit are gold-bearing quartz vein type and altered rock type produced in the shear zone. Based on alteration zoning and mineralization types, rock samples were systematically collected from boreholes. All The samples were analyzed by partial trace elements and constant elements, and the mass elements, rock mass balance, volume