| 东昆仑哈日扎铅锌多金属矿床金属矿物与S-Pb同位素特征 |
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| 引用本文： | 张斌,杨涛,杨生飞,李金超,孔会磊.东昆仑哈日扎铅锌多金属矿床金属矿物与S-Pb同位素特征[J].现代地质,2018,32(4):646. |
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| 作者姓名： | 张斌 杨涛 杨生飞 李金超 孔会磊 |
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| 作者单位： | (1中国地质调查局 西安地质调查中心, 陕西 西安710054；2西北有色地质勘查局 七一七总队, 陕西 宝鸡721015) |
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| 基金项目： | 中国地质调查局地质调查项目(DD20160013)。 |
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| 摘 要： | 东昆仑哈日扎铅锌多金属矿床位于东昆仑造山带东段，紧邻昆中断裂北侧。已获得的资料显示哈日扎铅锌多金属矿床具有良好的找矿前景。通过对矿床内主要金属矿物及其S Pb同位素组成进行详细研究，探讨其成矿温度与物质来源。研究表明：闪锌矿中Fe元素含量为9751%~12736%，Zn/Cd比值的变化范围为5650~11439，初步推测成矿温度为中—低温；矿床中各硫化物的δ34S值变化范围为-38‰~-05‰，具有深部岩浆硫的特征，且不同硫化物矿物中的S同位素未达到平衡分馏；Pb同位素变化相对较小，206Pb/204Pb、207Pb/204Pb及208Pb/204Pb值变化范围分别为18254~18504、15614~15800和38429~39028；表明其成矿物质主要来源于下地壳的部分熔融与深部岩浆的混合。
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| 关 键 词： | 硫、铅同位素 金属矿物 东昆仑 哈日扎 |
The Metallic Minerals and S and Pb Isotope Compositions of the Harizha
Lead Zinc Polymetallic Deposit,East Kunlun |
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| ZHANG Bin,YANG Tao,YANG Shengfei,LI Jinchao,KONG Huilei.The Metallic Minerals and S and Pb Isotope Compositions of the Harizha
Lead Zinc Polymetallic Deposit,East Kunlun[J].Geoscience——Journal of Graduate School,China University of Geosciences,2018,32(4):646. |
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| Authors: | ZHANG Bin YANG Tao YANG Shengfei LI Jinchao KONG Huilei |
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| Institution: | (1Xi’an Center of Geological Survey,China Geological Survey,Xi’an,Shaanxi710054，China；
2No717 Geological Team, Northwest Mining and Geological Exploration Bureau for Nonferrous Metals，Baoji,Shaanxi721015，China) |
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| Abstract: | The Harizha lead zinc polymetallic deposit is located in the eastern part of the East Kunlun orogenic belt, closing to the north side of the central Kunlun fault. The reported data show that the Harizha lead zinc polymetallic deposit has a good prospecting potential. This paper focuses on the temperature and source of ore forming materials, based on the studies on the characteristics of metallic minerals and their S Pb isotopes from the Harizha lead zinc polymetallic deposit. The data show that the content of Fe in sphalerite ranges from 9751% to 12736%,and the range of Zn/Cd value is 5650 to 11439, suggest that the Harizha lead zinc polymetallic deposit is a medium low temperature deposit; The δ34S values of sulfide minerals in the deposit range from -38‰ to -05‰, indicating that sulfur is sourced from the deep source magma，and the S in different sulfides are not in equilibrium. The 206Pb/204Pb,207Pb/204Pb and 208Pb/204Pb ratios of sulfide ores are 18254-18504, 15614-15800 and 38429-39028, respectively, which suggest that the ore forming materials were mainly derived from the parental magma generated by mixing of mafic magma and felsic magma formed by remelting of lower crustal rocks. |
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| Keywords: | S and Pb isotopes metallic mineral East Kunlun Harizha |
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