陕西省双王金矿床新类型金矿体的发现及找矿前景分析  

The discovery and prospecting potential analysis of a new type of gold deposit in Shuangwang gold deposit,Shaanxi Province

作　　者：李尚启 张彬 全孝勤 沈锐 张旗 刘元 张文璟 杨鱼帆 LI Shangqi;ZHANG bin;QUAN Xiaoqin;SHEN Rui;ZHANG Qi;LIU Yuan;ZHANG Wenjing;YANG Yufan(Northwest Geological Exploration Institute of China Metallurgical Geology Administration,Xi’an 710119,Shaanxi,China)

机构地区：[1]中国冶金地质总局西北地质勘查院,陕西西安710119

出　　处：《矿产勘查》2025年第1期108-119,共12页Mineral Exploration

基　　金：陕西太白黄金矿业有限责任公司地质勘查服务项目(TGJSSC202309)资助。

摘　　要：随着双王金矿床的不断开采,矿山探明的资源储量已消耗殆尽,企业面临着严重的资源危机,接替资源的探矿工作迫在眉睫。为解决制约矿山找矿突破的关键问题,通过对双王金矿床角砾岩带外围开展系统的地质调查研究,在角砾岩带(下盘)南部发现了新类型微细浸染型KT8-1金矿体,核实已控制的金矿体资源量2.4 t,实现了双王金矿床找矿的重大突破。发现的新类型矿体严格受构造控制,尤其以NW-NWW构造脆韧性剪切带、复式褶皱构造为主要控矿因素,矿(化)体均赋存于石英脉及石英脉与围岩接触带上。为了扩大矿体的规模,对KT8-1矿体外围、深部开展了构造叠加晕及高密度电法研究,圈定了找矿靶区2处,其中1处找矿靶区经工程验证探获了工业矿体。结合区域地质资料认为,矿区新类型矿体成矿地质背景良好、已有找矿成果显著,具有寻找更多隐伏金矿体的潜力。With the continuous exploitation of the Shuangwang gold deposit,the proven resource reserves of the mine have been exhausted,and the enterprise is facing a serious resource crisis.The exploration work to replace the resources is imminent.In order to solve the key problems that restrict the breakthrough of mine prospecting,a systematic geological survey was carried out on the periphery of the breccia belt of the Shuangwang gold deposit.A new type of micro-disseminated KT8-1 gold ore body was found in the south of the breccia belt(footwall),and the controlled gold ore body resource was verified to be 2.4 tons,which achieved a major breakthrough in the prospect⁃ing of the Shuangwang gold deposit.The new type of ore bodies discovered by are strictly controlled by structures,especially the NW-NWW brittle-ductile shear zone and composite fold structure are the main ore-controlling fac⁃tors.The ore(mineralized)bodies are all hosted in quartz veins and the contact zone between quartz veins and sur⁃rounding rocks.In order to expand the scale of the ore body,the structural superimposed halo and high-density electrical method were carried out on the periphery and deep part of the KT8-1 ore body,and two prospecting target areas were delineated.One of the prospecting target areas was verified by engineering to find industrial ore bodies.Combined with regional geological data,it is believed that the new type of ore body in the mining area has a good metallogenic geological background and significant prospecting results,and has the potential to find more concealed gold ore bodies.

关 键 词：双王金矿床 新类型金矿 微细浸染型 构造叠加晕 高密度电法 

分 类 号：P618.51[天文地球—矿床学]