Lead isotopic composition and lead source in the bainiuchang ag-polymetallic deposit, yunnan province, china
文献类型：期刊论文
| 作者 | Zhu Chaohui1,2,3; Zhang Qian1; Shao Shuxun1; Zhu Xiaoqing1; Wang Dapeng1,2 |
| 刊名 | Acta geologica sinica-english edition
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| 出版日期 | 2008-08-01 |
| 卷号 | 82期号:4页码:845-857 |
| 关键词 | Bainiuchang ag-polymetallic deposit Lead isotope Lead source Southeast yunnan province |
| ISSN号 | 1000-9515 |
| 通讯作者 | Zhu chaohui(zch_7856@163.com) |
| 英文摘要 | The bainiuchang deposit in yunnan province, china, is located geographically between the gejiu ore field and the dulong ore field. in addition to the > 7000 t ag reserves, the deposit also boasts of large-scale pb, zn and sn reserves with a lot of dispersed elements (in, cd, ge, ga, etc.). we have determined systematically the pb isotope composition of the deposit. the pb isotope ratios of the ores that are of sea-floor exhalative sedimentary origin in the northwest of the mining district, are pb-206/pb-204 = 17.758-18.537, pb-207/pb-204 = 15.175-15.862 and pb-208/pb-204 = 37.289-39.424, while those of ores that are of magmatic hydrothermal superimposition origin in the southeast of the mining district, are pb-206/pb-204 = 17.264-18.359, pb-207/pb-204 = 14.843-15.683 and pb-208/pb-204 = 36.481-38.838, respectively. in terms of the pb isotope composition of feldspar in magmatic rocks or magmatic whole-rock samples from the mining district, we have determined the pb isotope composition and acquired the pb isotope ratios as: pb-206/pb-204 = 18.224-18.700, pb-207/pb-204 = 15.595-15.797 and pb-208/pb-204 = 38.193-39.608. then, in the light of the pb isotope composition of metamorphic rock samples from the proterozoic basement exposed in the dulong ore field, we have determined the pb isotope composition and obtained the isotope ratios as: pb-206/pb-204 = 18.434-19.119, pb-207/pb-204 = 15.644-15.693, and pb-208/pb-204 = 38.514-38.832. and the pb isotope ratios of cambrian sedimentary rocks, which are exposed in the bainiuchang mining district, are pb-206/pb-204 = 18.307-19.206, pb-207/pb-204 = 15.622-15.809, and pb-208/pb-204 = 38.436-39.932. by comparing the two types of ores with respect to their pb isotope compositions, it is indicated that lead in the bainiuchang deposit was derived largely from the lower-crust granulite which is earlier than neoproterozoic in age, but the yanshanian magmatic hydrothermal fluids probably provided a part of ore-forming elements such as sn for the ore blocks in the south of the mining district. |
| WOS关键词 | PB-ZN DEPOSIT ; INNER-MONGOLIA |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000258544400015 |
| 出版者 | GEOLOGICAL SOC CHINA |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2392474 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhu Chaohui |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550002, Guizhou, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Sci Acad Land & Resources Henan, Zhengzhou 450053, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu Chaohui,Zhang Qian,Shao Shuxun,et al. Lead isotopic composition and lead source in the bainiuchang ag-polymetallic deposit, yunnan province, china[J]. Acta geologica sinica-english edition,2008,82(4):845-857. |
| APA | Zhu Chaohui,Zhang Qian,Shao Shuxun,Zhu Xiaoqing,&Wang Dapeng.(2008).Lead isotopic composition and lead source in the bainiuchang ag-polymetallic deposit, yunnan province, china.Acta geologica sinica-english edition,82(4),845-857. |
| MLA | Zhu Chaohui,et al."Lead isotopic composition and lead source in the bainiuchang ag-polymetallic deposit, yunnan province, china".Acta geologica sinica-english edition 82.4(2008):845-857. |
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来源：中国科学院大学
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