广西桃花金矿床深部找矿前景分析——基于CSAMT测量

Prospecting Potential at Depth of the Taohua Gold Deposit in Guangxi: An Analysis Based on CSAMT Survey

广西桃花金矿床有石英脉型和构造蚀变岩型两种矿化类型,近年发现厚大的构造蚀变岩型金矿体。本区浅部开展工作程度相对较高,而深部未开展工作,为了了解破碎蚀变带深部延伸情况,更好地指导矿区深部找矿工作,实现找矿的重大突破,笔者在大瑶山金矿整装勘查区的桃花金矿区参与开展了CSAMT剖面测量工作,在分析岩矿石物性特征的基础上,通过CSAMT反演成果,对桃花金矿区构造蚀变带的深部倾伏有了新的认识,探测到另一断裂破碎带的存在,并推断下部隐伏岩体的埋深,这为下一步工作指明了方向,也为钻探施工提供了可靠依据。

The Taohua gold deposit in Guangxi hosts quartz vein and tectonic altered rock types of mineralization. Recently,large gold ore bodies have been found in the tectonic altered rocks of this deposit. Although detailed exploration has been conduced in the shallow subsurface of this region, the dee- per space remains a gap. Understanding the situation of the extension of the broken alteration zones downward can help ore exploration in the deeper min- ing area and realize the breakthrough of prospecting. For this purpose, we have participated in the work of CSAMT profile measurement in the Taohua gold mining area of the Dayaoshan gold integrated exploration area. On the basis of analyzing the physical properties of the rocks and ores and the CSAMT in- version results, we obtained new perceptions on the deep plunging of the tectonic altered zones in the gold mining area, and detected the presence of an- other fault fracture zone and inferred the burial depth of the concealed rock mass. These results point out the direction of the future work, and also provide a reliable basis for drilling construction.