| Sm-Nd geochronology, REE geochemistry and C and O isotope characteristics of calcites and stibnites from the Banian antimony deposit, Guizhou Province, China | |
Jiasheng Wang; Hanjie Wen ; Haifeng Fan; Jingjing Zhu
| |
| 2012 | |
| 发表期刊 | Geochemical Journal
 |
| 卷号 | 46期号:5页码:393-407 |
| 摘要 | The Banian sediment-hosted antimony deposit is a medium-sized deposit located in the Dushan County, South Guizhou, China. Calcite is the dominant gangue mineral and can be divided into two types: white and pink. Pink calcite is intimately associated with mineralization. Sm-Nd dating of five white calcites yield an isochron age of 128.2 +/- 3.2 Ma, with initial epsilon(Nd) = -4.3 and MSWD = 0.54, while six pink calcites yield an identical age of 126.4 +/- 2.7 Ma with initial epsilon(Nd) = -6.0 and MSWD = 0.68. These new age constraints suggest that the Banian deposit formed during the late Yanshanian. Negative initial epsilon(Nd) values. C (-0.5 to -1.8), 0 (12.5 to 14.6) isotopic characteristics of calcites, and field observations of abundance of vuggy open spaces, all suggest significant interaction between fluid and wall rocks. Calcites are characterized by strongly LREE-depleted and MREE- and HREE-enriched (LREE/HREE = 0.11-0.61). Stibnites are LREE-enriched, and MREE- and HREE-depleted (LREE/HREE = 105-500). Wall rocks are characterized by moderate LREE-enriched (LREE/HREE = 6.2-12). Pink calcites are more enriched in LREE (LREE/HREE = 0.11-0.61) than white calcites (LREE/HREE = 0.11-0.23), while the concentration of HREE remains nearly constant in both. The high contents of Fe and Mn in calcites and the negative correlation between Fe+Mn (ppm) and LREE/HREE ratios suggest that the Fe-Mn impurities in calcites may dominate the enrichment of MREE and HREE in calcites from the Banian deposit. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.gyig.ac.cn/handle/352002/5139 |
| 专题 | 矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文 矿床地球化学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Jiasheng Wang,Hanjie Wen,Haifeng Fan,et al. Sm-Nd geochronology, REE geochemistry and C and O isotope characteristics of calcites and stibnites from the Banian antimony deposit, Guizhou Province, China[J]. Geochemical Journal,2012,46(5):393-407. |
| APA | Jiasheng Wang,Hanjie Wen,Haifeng Fan,&Jingjing Zhu.(2012).Sm-Nd geochronology, REE geochemistry and C and O isotope characteristics of calcites and stibnites from the Banian antimony deposit, Guizhou Province, China.Geochemical Journal,46(5),393-407. |
| MLA | Jiasheng Wang,et al."Sm-Nd geochronology, REE geochemistry and C and O isotope characteristics of calcites and stibnites from the Banian antimony deposit, Guizhou Province, China".Geochemical Journal 46.5(2012):393-407. |
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