新疆哈图金矿地球化学原生晕的深部找矿意义  

The significance of primary geochemical halos for prospecting orebody in depth in the Hatu gold deposit, Xinjiang Autonomous Region, China

作　　者：王俊林 地里夏提·买买提 白玉秀 卡衣沙尔·饿热斯 王人可 刘波 王勇 WANG Jun-lin;Dilixiati•MAIMAITI;BAI Yu-xiu;Kayishaer•ERESI;WANG Ren-ke;LIU Bo;WANG Yong(College of Geology and Mining Engineering,Xinjiang University,Urumqi 830047,China;Western Gold Karamay Hatu Gold Mine Co.,Ltd.,Urumqi 834000,China)

机构地区：[1]新疆大学地质与矿业工程学院 [2]西部黄金克拉玛依哈图金矿有限责任公司

出　　处：《矿物学报》2019年第6期726-734,共9页Acta Mineralogica Sinica

基　　金：国家自然科学基金项目(批准号：U1503191)

摘　　要：哈图金矿是新疆目前开采规模和产量最大的金矿床。利用矿区中东段的坑探工程和矿区西段钻探工程,开展了原生晕地球化学测量,中东段坑探工程中11个中段共采集矿体及围岩样品159件,西段钻探岩芯等间距取样54件,测试元素为Hg、Au、Ni、Pb、As、Sb、Cu、W、Zn、Ag、Mo、Bi共12项。通过研究,查明哈图金矿前缘晕为Hg-As-Sb,近矿元素为Ag-Cu-Zn-Mo,尾晕元素为W-Bi-Ni;中东段矿体原生晕轴向分带序列为Au、Pb-Hg-As、Ag-W-Sb、Bi-Zn、Cu、Ni、Mo;西段分带序列为Bi、Zn、Hg-Pb-Sb-Cu-W、As-Ag、Ni-Mo-Au。西段原生晕出现"反分带"与"头尾晕共存"现象,受雁列式含矿构造尖灭再现的影响,原生晕存在叠加结构,垂向上地球化学参数波动明显,结合区域地质矿产资料推断,矿区西段深处找矿潜力大于中东段。The Hatu gold mine is the largest one in Xinjiang Autonomous Region in terms of mining and production scales.Based on the adit exploration in the central and eastern ore blocks and the drilling in the western ore block of the deposit,a primary halo geochemical survey has been carried out in this paper.159 samples were collected from ore bodies and wall rocks in the central and eastern ore blocks,and 54 samples were collected from cores,at equal interval,of drilling holes in the western ore block.These samples are analyzed for 12 elements including Hg,Au,Ni,Pb,As,Sb,Cu,W,Zn,Ag,Mo,and Bi.Through the geochemical research,it is found that there are front halo elements of Hg-As-Sb,near orebody elements of Ag-Cu-Zn-Mo,rear halo elements of W-Bi-Ni in the Hatu gold deposit,with the primary halo axial zonation sequence of Au,Pb-Hg-As,Ag-W-Sb,Bi-Zn,Cu,Ni,Mo for orebodies in the central and eastern ore blocks and that of Bi,Zn,Hg-Pb-Sb-Cu-W,As-Ag,Ni-Mo-Au for orebodies in the western ore block.The phenomena of"reverse zonation"and"coexistence of front and rear halos"appeared in primary halos for orebodies in the western ore block could be caused by the influence of pinchout and reappearance of the echelon ore-bearing structure,as the primary halo has a feature of superimposition and the vertical geochemical parameters were obviously varied.Combining with data of regional geology and mineral resources,it is inferred that the prospecting potential of mineral resource in depth in the western ore block is greater than that in the central and eastern ore blocks in the Hatu gold deposit.

关 键 词：哈图金矿 原生晕 轴向分带序列 深部预测 

分 类 号：P595[天文地球—地球化学] P632[天文地球—地质学]