山西胡家峪南和沟铜矿床深部矿体定位预测的原生晕指示  

Prediction of Blind Ore Body Based on Primary Halo of Nanhegou Copper Deposit,Hujiayu,South Shanxi,China

作　　者：张瀚夫[1] 张晓军[1] 姚春亮[1] 王小敏[1] 华杉[1] 王佳营[1] 

机构地区：[1]中国地质大学资源学院,武汉430074

出　　处：《地质科技情报》2010年第4期106-110,共5页Geological Science and Technology Information

基　　金：国家危机矿山项目(200714010)

摘　　要：系统研究了山西胡家峪南和沟铜矿床深部矿体的原生晕特征。结果表明，矿区深部340～240m中段矿体原生晕的轴向分带序列为（Mn-W—Sn—Ti—Ag）-（Ni—Co—Mo—Pb—Sb—Zn）-（Hg—As—B-Bi—Cu—Au—V），呈现“反分带”特征；地球化学参数口曲线在340～240m中段的变化趋势为“降→升”；原生晕叠加结构显示在3号矿体尾部（290～240m中段）出现前、尾晕共存。这些现象都反映在240m中段以下可能存在隐伏矿体。同时，在侧向上，340～240m中段主成矿元素Cu质量分数由NE向SW方向显著增加，且在240m中段出现明显Cu异常，推测隐伏矿体分布在已知矿体的SW侧。综合原生晕特征可以推断，在240m中段92穿脉，3号矿体SW侧应有隐伏的新矿体发育。依据上述认识圈定出了深部矿体的预测靶区。Ore body 3^# , the largest body in the Nanhegou copper deposit , is pipe-shaped, and occurs nearly upright. Primary halo investigation reveals Mn, W, Sn, Ti, and Ag were concentrated within its halo at 340 meters altitude, and Ni-Co-Mo-Pb-Sb-Zn and Hg-As-B-Bi-Cu-Au-V are enriched at 290-meter and 240- meter level respectively, thus indicating a reverse geochemical zonation. At 240-meter and 290-meter level, proximal and front elements are enriched together, implying the presence of a blind ore body below the 240-meter level. At the bottom （240 and 290-meter level） ,however, copper concentration increased gradually southwestward, indicating that the deep-seated ore body was located in the southwest of ore body 3^# . This conjecture was validated by subsequent drilling works.

关 键 词：原生晕 深部预测 胡家峪南和沟铜矿床 山西省 

分 类 号：P612[天文地球—矿床学]