| 甘肃文县阳山金矿床葛条湾-安坝矿段原生晕地球化学特征及深部找矿远景评价 |
| Received:June 23, 2020 Revised:January 11, 2021 点此下载全文 |
| 引用本文：WANG Liang,XIONG Tao,LUO Tao,DENG JunFeng,YANG Hu,YANG ZhongHu.2021.Geochemical characteristics of primary halo and evaluation of deep mineralization prospect of Yangshan gold deposit, Wenxian, Gansu Province[J].Mineral Deposits,40(1):143~155 |
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| Author Name | Affiliation | | WANG Liang | Applied Geology Research Center of China Geological Survey, Chengdu 610036, Sichuan, China | | XIONG Tao | Applied Geology Research Center of China Geological Survey, Chengdu 610036, Sichuan, China | | LUO Tao | Applied Geology Research Center of China Geological Survey, Chengdu 610036, Sichuan, China | | DENG JunFeng | Applied Geology Research Center of China Geological Survey, Chengdu 610036, Sichuan, China | | YANG Hu | Applied Geology Research Center of China Geological Survey, Chengdu 610036, Sichuan, China | | YANG ZhongHu | Applied Geology Research Center of China Geological Survey, Chengdu 610036, Sichuan, China |
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| 基金项目:本文得到中国地质调查局应用地质研究中心《甘肃阳山金矿岩金普查》（编号：DD20191028）资助 |
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| 中文摘要:甘肃文县阳山金矿是产于勉略缝合带内的超大型卡林-类卡林型金矿床。为探讨矿区深部找矿潜力和成矿远景评价，文章对葛条湾-安坝矿段30号勘探线剖面的成矿及伴生元素原生晕地球化学特征进行研究，结果表明：该矿段原生晕的轴（垂）向分带序列自上而下为：Pb—Co—Cu—Zn—Mn—Bi—Mo—Sb—Au—As—Ag。矿体中部原生晕具有反向分带特征，原生晕出现前缘晕、尾晕叠加，显示具有多阶段热液叠加成矿作用的特征。在深部1400 m标高，前缘晕并未消失，并向深部强度增大，尾晕仅为弱异常。同时，原生晕地球化学参数（As×Sb）/（Mo×Bi）、（As+Sb）/（Mo+Bi）比值发生转折并升高，前缘晕因子得分在深部有很强的高值异常，进一步证实深部具有盲矿体存在的可能性。综上表明，阳山金矿矿区深部找矿前景较好。 |
| 中文关键词:地球化学 原生晕 深部找矿 远景评价 阳山金矿 |
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| Geochemical characteristics of primary halo and evaluation of deep mineralization prospect of Yangshan gold deposit, Wenxian, Gansu Province |
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| Abstract:The Yanshan gold deposit located along the Mian-Lue suture belt in the west of Qinling orogenic belt is a superlarge Carlin-Carlin-like deposit. This paper systematically analyzes the geochemical characteristics of primary halo of metallogenic and accompanying elements from the No. 30 exploration line section in Getiaowan-Anba ore block. This study exhibits a series of Pb-Co-Cu-Zn-Mn-Bi-Mo-Sb-Au-As-Ag in axial zonation sequence. And the primary halo in the middle of the orebody shows reverse zonation that the top and the tail of the primary halo coexist, which was probably caused by multiple phases of hydrothermal superposed mineralization. At the depth of 1400 m, the front halo does not disappear and becomes more strong toward the depth, but the tail halo shows weak anomaly. The geochemical parameters of (As×Sb)/(Mo×Bi),(As+Sb)/(Mo+Bi) are increasing in reverse, and factor score of the front halo shows quite strong high value area. These features suggest the presence of a blind orebody and prospecting potential in the deep area. |
| keywords:geochemistry primary halo deep prospecting perspective evaluation Yangshan gold deposit |
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