Geological and geochemical characteristics of the Lee Laozhuang iron mine in Huoqiu iron deposit: Implications for sedimentary environment
文献类型：期刊论文
| 作者 | Huang Hua1,2; Zhang LianChang2; Liu XianFan1; Li HongZhong2; Liu Li2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2013-07-01 |
| 卷号 | 29期号:7页码:2593-2605 |
| 关键词 | Iron Deposit Banded Iron Formation Depositional Environment Tectonic Setting Huoqiu County In Anhui provInce |
| 文献子类 | Article |
| 英文摘要 | The Lee Laozhuang iron mine lies in the central parts of Anhui Huoqiu iron deposit which is tectonically located in the southern margin of the North China Craton. The iron ore body is hosted in biotite quartz hornblende plagioclase gneiss (schist) and marble, both of their protoliths are fine-grained elastic rocks and magnesium-rich carbonate rocks, respectively. The iron ore body is mainly occurred as banded, disseminated and massive. Petrology and mineralogy study are conducted on samples from the Lee Laozhuang iron mine, while major and trace element compositions were analyzed on the iron ores and surrounding rocks. The results have shown that Lee Laozhuang iron ores are mainly composed of Fe2O3, SiO2, MgO with low content of Al2O3, and TiO2. The trace element compositions and total contents of rare earth element are low. The iron ore samples have (La/Yb) p, of 0. 2 similar to 0. 5, significant positive anomaly in La (La/La* = 2. 07 similar to 4. 03),Eu (Eu/Eu* = 1. 72 similar to 3.60) and Y (Y/Y* = 1. 50 similar to 1. 87). They have high Y/Ho (Y/Ho =38. 4 similar to 47. 31 with an average of 42. 12) and Sr/Ba (Sr/Ba = 4. 92 28. 90 with an average of 13. 68). These characteristics demonstrated that metallogenic materials of the Lee Laozhuang iron mine are mainly sourced from the mixture of hydrothermal and seawater. The banded iron formations have no significant negative anomaly of Ce (Ce/Ce* = 0. 67 similar to 0. 81), in combined with low Fe2O3T/FeO (Fe2OT/FeO = 2. 60 similar to 3. 19 with an average of 2. 95), indicating it is the primary ore. In addition, the geochemical analysis have shown that the protoliths of schist and gneiss within iron ore in the Lee Laozhuang iron mine may be formed from clays or sandy sedimentary rocks of the continental margin, suggesting that the seawater was reduced with low oxygen fugacity during the iron ore precipitation. The normalized REE pattern have shown strongly LREE depletion and HREE enrichment with a wide range (La/Yb)(N), (8. 46 similar to 25. 78 with an average of 19. 48), indicating deposited materials are possibly sourced from terrigenous contribution. In summary, the Lee Laozhuang BIF iron mine was formed in confined basins of active continental margin, which was influenced by the submarine volcanic hydrothermal activities. |
| WOS关键词 | RARE-EARTH-ELEMENTS ; NORTH CHINA ; LIAONING PROVINCE ; FORMATION AGE ; YTTRIUM ; SEAWATER ; METAMORPHISM ; FRACTIONATION ; CONSTRAINTS ; EVOLUTION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000322926000023 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62653]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 作者单位 | 1.Chengdu Univ Technol, Coll Earth Sci, Chengdu 610059, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang Hua,Zhang LianChang,Liu XianFan,et al. Geological and geochemical characteristics of the Lee Laozhuang iron mine in Huoqiu iron deposit: Implications for sedimentary environment[J]. ACTA PETROLOGICA SINICA,2013,29(7):2593-2605. |
| APA | Huang Hua,Zhang LianChang,Liu XianFan,Li HongZhong,&Liu Li.(2013).Geological and geochemical characteristics of the Lee Laozhuang iron mine in Huoqiu iron deposit: Implications for sedimentary environment.ACTA PETROLOGICA SINICA,29(7),2593-2605. |
| MLA | Huang Hua,et al."Geological and geochemical characteristics of the Lee Laozhuang iron mine in Huoqiu iron deposit: Implications for sedimentary environment".ACTA PETROLOGICA SINICA 29.7(2013):2593-2605. |
入库方式： OAI收割
来源：地质与地球物理研究所
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