| 陕西安康梅子铺金矿区化探异常剖析及找矿潜力分析 |
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| 引用本文： | 杨宏林,王瑞廷,郑强,孟德明.陕西安康梅子铺金矿区化探异常剖析及找矿潜力分析[J].西北地质,2013(4):182-193. |
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| 作者姓名： | 杨宏林 王瑞廷 郑强 孟德明 |
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| 作者单位： | [1]西北有色地质勘查局物化探总队,陕西西安710068 [2]西北有色地质勘查局,陕西西安710054 [3]长安大学地球科学与资源学院,陕西西安710054 |
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| 基金项目： | 国土资源部公益性行业科研专项“陕西秦岭地区与小岩体有关的铜钼多金属成矿背景与找矿预测研究”（201111007-3） |
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| 摘 要： | 陕西省安康梅子铺金矿区位于秦岭褶皱系北大巴山加里东褶皱带牛山地背斜南缘，通过土壤正规网地球化学测量，重新圈定了化探异常，Au、Ag、Cu、Pb、As、Sb、Bi异常明显，Au—AgPb，As—Sb—Bi相关性较好。通过对异常元素的空间分布特征分析，表明成矿流体或成矿热液自东南向西北方向运移。对重点化探异常进行了优选验证，认为土壤异常与云母石英片岩、北东向片理构造三者配套是确定金矿化富集部位的“三位一体”找矿标志，构造和岩浆活动为主要控矿因素。Au—As—Pb—Ag—Sb异常元素套合良好，浓集中心明显，为矿致异常。Mt-2、Mt-4、Mt-5土壤异常是本区进一步找矿的远景地段。异常组合特征指示本区东部剥蚀程度较高，西部较低，推测西部可能存在金的隐伏矿体，具有较大找矿潜力。
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| 关 键 词： | 金矿 找矿潜力 地球化学 梅子铺 安康 |
Geochemical Characteristics and Analysis of the Prospecting Potential of Meizipu Gold Deposit in Ankang,Shaanxi |
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| YANG Hong-lin,WANG Rui-ting,ZHENG Qiang,MENG De-ming.Geochemical Characteristics and Analysis of the Prospecting Potential of Meizipu Gold Deposit in Ankang,Shaanxi[J].Northwestern Geology,2013(4):182-193. |
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| Authors: | YANG Hong-lin WANG Rui-ting ZHENG Qiang MENG De-ming |
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| Institution: | 3 ( Northwest NonJerrous Metals Party of Geophysical ＆ Geochemical Exploration, Xi＇an 710068, China 2. Northwest Mining and Geological Exploration Bureau for Nonferrous Metals, Xi＇an 710054 , China; 3. School of Earth Science and Resource, Chang＇an University, Xi＇an 710054, China) |
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| Abstract: | The Meizipu gold deposit in Ankang of Shaanxi province is located in the southern margin of Niushandi anticline, Caledonian North-Daha mountain fold belt, Qinling fold belt. The geochemical anomalies are re-delineated through soil regular network geochemical measurements. Results indicate that the anomalies of Au, Ag, Cu, Pb, As, Sb, Bi are obvious, and there are good correlations among Au, Ag and Pb, as well as As, Sb and Bi. Spatial distribution characteristics analysis of anomaly elements reflects that the ore-forming fluid or hydrothermal fluids migrated from southeast to northwest. The validation and analysis of key anomalies confirm that the combination of anomaly, mica-quartz schist and east-north schistosity structure is the indicator for deposit of gold mineralization enrichment area. In addition, geological structure and magmatic activity are ore-controlling factors. The clear combination of Au, As, Pb, Ag, Sb elements and the obvious accumulation center indicate that the anomaly is mineralized anomaly. The soil anomalies of Mt-2, Mt-4 and Mt-5 are the potential exploration region in this area. Characteristics of geochemical anomaly indicate that the denudation of east is stronger than west. Therefore, it can be speculated that concealed ore body of gold may exist in western area, and there is a great prospecting potential. |
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| Keywords: | gold deposit prospecting potential geochemical Meizipu Ankang |
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