山西辛庄金矿床成因及找矿前景

发布时间：2018-02-15 13:43

本文关键词： 金矿低温热液充填型矿床岩浆岩断裂构造控矿因素找矿标志　出处：《金属矿山》2017年12期 　论文类型：期刊论文

【摘要】：山西辛庄金矿地质构造位置属燕山沉降带西南缘与山西陆台五台隆起西北侧交切构造-岩浆活动带,区域成矿地质条件优越。结合矿区现阶段地质勘探成果,对矿区地质构造特征、地形特征和岩浆岩分布特征进行了综合分析,分别从成矿物质来源、成矿地质条件、成矿作用、围岩蚀变特征、成矿方式、成矿温度等方面厘定了矿床成因,并总结了找矿标志。研究表明:(1)矿区断裂构造对含金硫化物石英脉具有明显的控制作用,NW向断裂带控制了矿床的形成和定位;(2)辛庄金矿床成因类型为低温热液充填型金矿床,成矿物质和成矿热能均与燕山期岩浆侵入活动和岩浆成矿活动相关,片麻岩在浅部成矿流体移动、聚集和定位过程中形成了脆性断裂,为控矿构造发育提供了地质条件。在上述分析的基础上,进一步研究认为:(1)在同类型金矿床寻找中,应重点在酸性火山岩的浅成、超浅成岩脉以及大断裂带附近追索;(2)矿区及其外围应沿着大断裂带和石英斑岩脉追索,大断裂带附近的石英斑岩出露地带应为找矿的重点区域。
[Abstract]:The geological structure location of Xinzhuang gold deposit in Shanxi is located in the southwest margin of Yanshan subsidence belt and the intersecting tectonic-magmatic active zone on the northwest and north side of Wutai uplift of Shanxi Lutai. The regional metallogenic geological conditions are superior. The geological structure characteristics, topographic features and magmatic rock distribution characteristics of the mining area are comprehensively analyzed, respectively, from the source of the ore-forming material, the metallogenic geological conditions, the metallogenic process, the alteration characteristics of the surrounding rock, the metallogenic mode, etc. The ore-forming temperature and other aspects have determined the genesis of the deposit. The results show that the fault structure has a significant controlling effect on the quartz vein of gold-bearing sulphide. The NW-trending fault zone controls the formation and location of the deposit. The genetic type of the Xinzhuang gold deposit is a low-temperature hydrothermal filling type gold deposit. Both ore-forming and ore-forming thermal energy are related to Yanshanian magmatic intrusion and magmatic ore-forming activities. The gneiss formed brittle fracture during the process of shallow ore-forming fluid movement, accumulation and location. On the basis of the above analysis, it is further considered that in the exploration of the same type gold deposits, the emphasis should be placed on the superficial formation of acidic volcanic rocks. The ore area and its periphery should be traced along the great fault zone and quartz porphyry vein, and the quartz porphyry outcrop area near the great fault zone should be the key area for prospecting.
【作者单位】：江门职业技术学院艺术设计系;
【分类号】：P618.51

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