| Rare Earths, Niobium and Tantalum Minerals in Bayan Obo Ore Deposit and Discussion on Their Genesis |
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| 作者姓名： | 张培善 陶克捷 杨主明 杨学明 宋仁奎 |
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| 作者单位： | InstituteofGeologyandGeophysics,ChineseAcademyofSciences,Beijing100029,China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina (4 9872 0 2 0 ) |
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| 摘 要： | Bayan Obo ore deposit is endowed with and lie hidden in the Proterozoic strata. The localities and occurfences of the minerals in the ore deposit were described. It is obviously that some minerals are strata minerals and some are post-strata minerals. The rare earths, niobium and tantalum minerals are exactly the post-strata minerals. In these minerals the hydrothermal metasomatic phenomena distinctly reveal their metallogenic characteristics. According to tectonic movement, magma activity, mineral paragenesis, hydrothermal metasomatism, geological age and lasting time-scale of metallogenesis, and some other factors, it is supposed that genesis of rare-earths, niobium and tantalum minerals in Bayan Obo ore deposit are closely related with hydrothermal metallogenic solution which is differentiated from silica acid and carbonic acid magma and derived from deep seated source, and then intruded into Proterozoic strata and metasomatized. It is recognized that the metallogenesis of Bayan Obo ore deposit is undergoing a long geological period and many episodes.
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| 关 键 词： | 矿物成因 地球化学 稀土 铌 钽 沉积作用 |
Rare Earths, Niobium and Tantalum Minerals in Bayan Obo Ore Deposit and Discussion on Their Genesis |
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| Zhang Peishan,Tao Kejie,Yang Zhuming,Yang Xueming,Song Renkui.Rare Earths, Niobium and Tantalum Minerals in Bayan Obo Ore Deposit and Discussion on Their Genesis[J].Journal of Rare Earths,2002,20(2):81-86. |
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| Authors: | Zhang Peishan Tao Kejie Yang Zhuming Yang Xueming Song Renkui |
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| Abstract: | Bayan Obo ore deposit is endowed with and lie hidden in the Proterozoic strata. The localities and occurrences of the minerals in the ore deposit were described. It is obviously that some minerals are strata minerals and some are post strata minerals. The rare earths, niobium and tantalum minerals are exactly the post strata minerals. In these minerals the hydrothermal metasomatic phenomena distinctly reveal their metallogenic characteristics. According to tectonic movement, magma activity, mineral paragenesis, hydrothermal metasomatism, geological age and lasting time scale of metallogenesis, and some other factors, it is supposed that genesis of rare earths, niobium and tantalum minerals in Bayan Obo ore deposit are closely related with hydrothermal metallogenic solution which is differentiated from silica acid and carbonic acid magma and derived from deep seated source, and then intruded into Proterozoic strata and metasomatized. It is recognized that the metallogenesis of Bayan Obo ore deposit is undergoing a long geological period and many episodes. |
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| Keywords: | rare earths niobium and tantalum mineral genesis Bayan Obo |
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