黄金科学技术 ›› 2020, Vol. 28 ›› Issue (1): 12-20.doi: 10.11872/j.issn.1005-2518.2020.01.158
郭辉1,2(),刘春明2(),黄德志2,邹海洋2,陈磊2,3
Hui GUO1,2(),Chunming LIU2(),Dezhi HUANG2,Haiyang ZOU2,Lei CHEN2,3
摘要:
大裕金矿位于广西大瑶山成矿带的古袍成矿区带,构造单元属于桂中—桂东台陷大瑶山凸起东端古袍复式向斜南翼,矿区成矿地质条件优越,但由于对成矿规律认识不足,该区找矿工作推进缓慢。选取成矿带内典型的大裕金矿为例,在总结成矿地质特征的基础上,结合钻孔资料及镜下矿石特征,分析了该区金成矿的控矿因素和成矿规律,认为该区主要控矿构造为NEE向F1和F2断裂,赋矿围岩为寒武系小内冲组和黄洞口组浅变质含炭质细碎屑岩,矿化蚀变主要为硅化—黄铁矿化和绢云母化—黄铁矿化—硅化组合蚀变。研究提出该区今后找矿应结合物化探工作,重点找矿方向有:①关注与金成矿关系密切的硅化、黄铁矿化、绢云母(水云母)化及绿泥石化等围岩蚀变线索;②建议在NE-NEE向断裂及其所挟持部位和断裂交会部位开展找矿工作。
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