Secondary reaction textures in the Bayan Obo carbonatite
文献类型：期刊论文
| 作者 | Wang KaiYi1; Mao Qian1; Ma YuGuang1; Zhou JianXiong2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 31期号:9页码:2674-2678 |
| 关键词 | Bayan Obo calcite carbonatite Secondary reaction rim of REE silicate minerals REE-rich fluid |
| 文献子类 | Article |
| 英文摘要 | In Bayan Obo coarse-grained calcite carbonatite there are three kinds of reaction texture: 1) the quartz within the calcite surrounded by the rim of britholite (+/- aegirine); 2) the alkaline amphibole within the calcite surrounded by the rim of britholite; 3) the sphene within the calcite surrounded by the rim of chevkinite. The total REE content of britholites is about 67% (average content of three samples), the rest constituents of which consist of silicon and calcium, if the silicon and calcium came from surrounded quartz (or sodium amphibole) and host calcite, respectively, the REE can be only derived from metasomatic fluid. Similar case is that the chevkinites have total REE content reaching to about 52% (average content of three samples), however, the sphene only contain about 3% total REE, therefore, if the silicon and titanium came from the surrounded sphene, the REE as well iron of the chevkinites can be only derived from the metasomatic fluid. The case suggests that in late stage there was some mobilisation of REE-rich fluid which metasomatized the original silicate minerals along their margin contacting with the calcites developing the reaction rim of secondary REE minerals. It has been further suggested that REE enrichment at Bayan Obo deposit is related to, at least, one period of REE-rich fluid metasomatism, in addition to the fluid may also has iron and sodium. The results based on the data are quite consistent with the conclusion of previous study on the fluid composition at the Bayan Obo deposit. |
| WOS关键词 | REE-NB DEPOSIT ; INNER-MONGOLIA ; CHINA ; MINERALS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000362800400015 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62215]  |
| 专题 | 地质与地球物理研究所_离退休科研人员 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang KaiYi,Mao Qian,Ma YuGuang,et al. Secondary reaction textures in the Bayan Obo carbonatite[J]. ACTA PETROLOGICA SINICA,2015,31(9):2674-2678. |
| APA | Wang KaiYi,Mao Qian,Ma YuGuang,&Zhou JianXiong.(2015).Secondary reaction textures in the Bayan Obo carbonatite.ACTA PETROLOGICA SINICA,31(9),2674-2678. |
| MLA | Wang KaiYi,et al."Secondary reaction textures in the Bayan Obo carbonatite".ACTA PETROLOGICA SINICA 31.9(2015):2674-2678. |
入库方式： OAI收割
来源：地质与地球物理研究所
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