山东焦家金矿地质地球化学模型及深部找矿预测评价  

Geo-geochemical model and deep prospecting forecast of Jiaojia gold deposit in Shandong Province

作　　者：白宇航[1] 陈远荣[1] 肖婷婷[1] BAI Yuhang;CHEN Yuanrong;XIAO Tingting(College of Earth Sciences,Guilin University of Technology,Guilin 541006,Guangxi,China)

机构地区：[1]桂林理工大学地球科学学院,广西桂林541004

出　　处：《矿产与地质》2019年第1期152-157,共6页Mineral Resources and Geology

基　　金：国家科技支撑项目(编号:2014BAB05B00);国家自然科学基金项目(编号:41073039)共同资助

摘　　要：利用烃汞气体与微量元素结合的测量技术为方法,以焦家典型的Ⅰ号矿体为研究对象,选取128、160勘探线上的钻孔数据进行深入的分析,对比各微量元素的含量特征、分布规律和各烃类组分的异常展布特征,讨论各指标异常在空间上与金矿体之间的对应关系,从而建立焦家金矿成矿地质地球化学异常找矿模型,并通过实际异常分带模型分析,就研究区域深部的成矿潜力进行评价。得到以下主要结论:①焦家金矿的原生晕轴向分带序列为:烃类组分(前缘晕)→Hg、As、Sb(矿头晕)→Ag、Au、Cu、Pb、Zn、Bi(矿中晕)→Mo、W(矿尾晕)。②在矿体轴向上,元素组分之间在总体上出现了明显的反分带现象。128号线剖面中矿体尾部出现前缘晕、尾缘晕共存现象;160号线前缘晕异常强烈,这都揭示了128、160号线深部有较好的成矿潜力。Taking the typical No.1 orebody in Jiaojia as the object of study,using the measurement technology of hydrocarbon mercury gas combined with trace elements,the borehole data of 128 and 160 exploration lines are analyzed in depth,and the content characteristics,distribution regularity of trace elements and the abnormal distribution characteristics of hydrocarbon components are compared.The corresponding relationship between each index anomaly and gold orebody in space is discussed.The metallogenic geological and geochemical anomaly prospecting model of Jiaojia gold deposit is established,and the metallogenic potential in the deep part of the study area is evaluated by analyzing the actual anomaly zoning model.The main conclusions are as follows:(1)The axial zoning sequence of primary halo in Jiaojia gold deposit is:hydrocarbon component(front halo)Hg,As,Sb(ore halo)Ag,Au,Cu,Pb,Zn,Bi(ore halo)Mo,W(Mine tail halo).(2)In the axial direction of the orebody,there is obvious reverse zoning between the elements.The coexistence of front halo and tail halo in the tail of orebody in line 128 profile and abnormal intensity of front halo in line 160 reveal that the deep part of line 128 and 160 has better metallogenic potential.

关 键 词：焦家金矿 烃气测量技术 地球化学异常模型 找矿潜力 

分 类 号：P618.51[天文地球—矿床学] P632[天文地球—地质学]