| 代 力.四川夏塞银铅锌多金属矿床1号矿体原生晕地球化学特征[J].地质与勘探,2013,49(2):236-249 |
| 四川夏塞银铅锌多金属矿床1号矿体原生晕地球化学特征 |
| Geochemical Characteristics of Primary Halos in the No.1 orebody of the Xiasai Ag-Pb-Zn Polymetallic Deposit, Sichuan |
| 投稿时间：2012-07-01 修订日期：2012-11-12 |
| DOI： |
| 中文关键词: 原生晕地球化学特征 轴向分带序列 夏塞银铅锌矿床 反分带 |
| 英文关键词: geochemical characteristics of primary halo, axial zoning sequence, Xiasai Ag-Pb-Zn polymetallic deposit, anti-zoning phenomenon |
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| 摘要点击次数: 2039 |
| 全文下载次数: 1239 |
| 中文摘要: |
| [摘 要] 四川夏塞银铅锌多金属矿床位于西南“三江”义敦岛弧构造带中段，是与绒伊措岩体密切相关的浅成中低温热液型银铅锌矿床。对夏塞矿区1号矿体9个中段采样分析，通过数理统计分析、分带序列研究、地球化学参数计算、建立剥蚀模型等方法，系统详细地研究了矿体原生晕地球化学特征。研究表明：①1号矿体原生晕找矿的主要指示元素：Ag、Pb、Zn、Cu、Sb、Hg、Cd、Sn，次要指示元素：Bi、W、B、As、Au、Mn；②原生晕轴向分带序列为：Hg-Pb-Bi-Sn-Cd-Zn-Cu-As-Ag-W-Au-Sb-Ba-V-Mo-Mn，出现“反分带”现象；③成矿过程存在多次叠加，轴向地球化学参数变化曲折，出现多次转折，反应成矿过程复杂。综合各项特征，推测1号矿体深部可能有盲矿存在。 |
| 英文摘要: |
| Abstract：The Xiasai Ag-Pb-Zn polymetallic deposit, located in the middle of the Yidun island arc tectonic belt of “Sanjiang”, southwestern China, is an epithermal deposit closely related with the Rongyicuo rock mass. This paper systematically studies the geochemical features of the primary halos from 9 horizontal drifts of the No. 1 orebody with the methods of mathematical statistics, axial zoning sequence, geochemical parameters calculation and establishment of the erosion model. The results show that the major indicator elements of prospecting with primary halos in the No. 1 orebody include Ag, Pb, Zn, Cu, Sb, Hg, Cd and Sn, and secondary indicator elements are Bi, W, B, As, Au and Mn. Axial zoning follows in a sequence of Hg-Pb-Bi-Sn-Cd-Zn-Cu-As-Ag-W-Au-Sb-Ba-V-Mo-Mn and it appears as anti-zoning phenomenon. The mineralization experienced several superposition processes, and axial geochemical parameters exhibited complicated changes and many turns, indicating its complexity. It is thus inferred that there are possible blind orebodies in the deep portion of the No.1 orebody. |
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