胶莱盆地南缘高家宅科地区短波红外光谱特征及金多金属矿勘查指示意义  

Characteristics of Short-Wave Infrared Spectrum and Significance of Exploration Instructions of Gold Polymetallic Deposit in Gaojiazhaike Area in the Southern Margin of Jiaolai Basin

作　　者：唐名鹰 陈建 邹占春 孙丽莎 何宗围 李双飞 郑成龙 丁文洁 TANG Mingying;CHEN Jian;ZOU Zhanchun;SUN Lisha;HE Zongwei;LI Shuangfei;ZHENG Chenglong;DING Wenjie(Resources and Environmental Engineering College of Shandong University of Technology,Shandong Zibo 255000,China;No.8 Exploration Institute of Geology and Mineral Resources,Key Laboratory of Nonferrous Metal Ore Exploration and Resource Evaluation of Shandong Provincial Bureau of Geology and Mineral Resources,Shandong Rizhao 276826,China)

机构地区：[1]山东理工大学资源与环境工程学院,山东淄博255000 [2]山东省第八地质矿产勘查院,山东省地矿局有色金属矿找矿与资源评价重点实验室,山东日照276826

出　　处：《山东国土资源》2023年第5期17-26,共10页Shandong Land and Resources

基　　金：山东省地矿局地质勘查引领示范项目“山东省五莲县赞子崖-高家宅科地区铜多金属矿调查评价”(KC202213)的成果。

摘　　要：胶莱盆地南缘沿五莲-青岛深大断裂及其次级断裂,目前已发现大量的金铅锌多金属矿床(点),除典型的隐爆角砾岩型五莲七宝山金铜矿外,其余各矿床沿断裂发育,以石英脉型矿化为主,均显示热液矿床特征。高家宅科地区已发现的金铅锌多金属矿点,分布在以高岭断裂为主的NNW—近SN向断裂中,但基于成矿规律及成矿作用等认识的不足,该地区找矿工作进展缓慢。本次研究通过短波红外光谱测量,在该地区识别出以伊利石、白云母、绿泥石、高岭石、蒙脱石和菱铁矿为主的蚀变矿物,以面积性绢云母蚀变为主(伊利石+白云母)。绢云母矿物高IC值和低Pos2200吸收峰值分布区域均与区内NNW—近SN向断裂和绢英岩化蚀变带具良好的相关性。结合已有成矿事实,认为区内以高岭断裂为主的NNW—近SN向断裂更靠近热液中心,同时,绢英岩化蚀变带中异常的高IC值和极低的Pos2200吸收峰值分布区域,同样具成矿的可能性。In the southern margin of Jiaolai basin,a large number of gold,lead and zinc polymetallic deposits(spots) have been found.Except for typical hidden explosion breccia type Wulian-Qibaoshan gold and copper deposit,other deposits are developed along the fault,which are mainly quartz vein type mineralization with hydrothermal deposit characteristics.Polymetallic gold,lead and zinc deposits have been found in Gaojiazhaike area,which are distributed in the NNW and SN fault dominated by Gaoling fault.However,due to the lack of understanding of metallogenic regularity and mineralization,the prospecting progress in this area is slow.Therefore,in this study,the alteration minerals are mainly composed of Illite,muscovite,chlorite,kaolinite,montmorillonite and siderite were identified in this area through short-wave infrared spectroscopy,and the alteration minerals mainly consisted of areal sericite(Illite+Muscovite).The distribution area of high IC value and low Pos2200 absorption peak value of sericite minerals has a good correlation with the trend of NNW to near SN fault and sericite alteration belt.Combining with the existing metallogenic facts,it is considered that the NNW and near SN fault dominated by Gaoling fault in the area is closer to hydrothermal center.At the same time,the distribution area of abnormal high IC value and very low Pos2200 absorption peak in the sericite alteration belt also has the possibility of mineralization.

关 键 词：短波红外光谱 金多金属矿 勘查指示意义 胶莱盆地南缘 高家宅科 

分 类 号：P59[天文地球—地球化学]