Two stages of gold mineralization in the Hebaoshan deposit: Evidence from the U-Pb dating and trace element geochemistry of rutile, monazite and apatite
文献类型：期刊论文
| 作者 | Xiao, Zheng5; Zheng, Jiahao5; Zhao, Junfeng3,4; Chen, Juan5; Wu, Xiaolin2; Liu, Wenyuan5; Lu, Lin1 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 170页码:18 |
| 关键词 | Hebaoshan Gold deposit U-Pb dating Rutile Monazite Apatite |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2024.106129 |
| 英文摘要 | The Hebaoshan gold deposit (41.5 t Au @ 3.5 g/t) is located in the southeastern region of the South China Block, central part of the Wuyishan metallogenic belt. The ore-hosting rocks in this area are predominantly Precambrian metasedimentary rocks and Caledonian granitic rocks. Two hydrothermal mineralization stages can be distinguished: a quartz-sericite-pyrite-native gold (stage I) and a chlorite-quartz-sericite-chalcopyrite-electrum (stage II), with hydrothermal monazite and rutile are firstly identified in separate stages. The complex geological history of the region has resulted in ongoing debates regarding the age of gold mineralization and the genesis of the major gold deposits in this area. In order to precisely constrain the mineralization age of the deposit and further establish a genetic model for the ore deposit, LA-ICP-MS U-Pb dating and trace element analysis on accessory minerals were conducted. Based on the textures mineral assemblages, and geochemical features of the accessory minerals, magmatic apatite, hydrothermal rutile, and both magmatic and hydrothermal monazite were identified. The U-Pb ages of magmatic apatite and monazite are determined to be 445.3 f 15.80, 441.3 f 15.10 Ma and 446.57 f 1.03 Ma, respectively, suggesting that these ages represent the emplacement ages of the Caledonian intrusive rocks. The ages of hydrothermal monazite and hydrothermal rutile are determined to be 238.46 f 2.01 Ma (single-mineral analysis), 238.46 f 2.01 Ma (in-suit analysis) and 179.54 f 7.28 Ma, respectively, suggesting that represent two mineralization events during the Late Triassic to early Jurassic in the Hebaoshan area. These data provide new constraints on the mineralization process in the Hebaoshan deposit and excludes the link between gold mineralization and the intrusion of the Caledonian granites. Regionally, It is speculated that the two mineralization events at Hebaoshan are respectively associated with intracontinental orogenic movements between the Yangtze Block and Cathaysia Block, the flat-slab subduction of the PaleoPacific Plate (stage I), and the subsequent extensional tectonics related to the collision between the Yangtze Block and Cathaysia Block (stage II). Our study indicates that the timing of multiple episodic mineralization can be constrained by analysis of accessory minerals, which provides a geological basis for better genetic model for the deposit and provide geological evidence for unraveling the relationships between magmatic activities and mineralization events in the region. |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001298938200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/80602]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Liu, Wenyuan |
| 作者单位 | 1.Fujian Geol Explorat Inst Geol & Mine Bur, Fuzhou 350013, Peoples R China 2.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Mineral & Metallogeny, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 5.Fuzhou Univ, Zijin Sch Geol & Min, Fuzhou 350108, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Zheng,Zheng, Jiahao,Zhao, Junfeng,et al. Two stages of gold mineralization in the Hebaoshan deposit: Evidence from the U-Pb dating and trace element geochemistry of rutile, monazite and apatite[J]. ORE GEOLOGY REVIEWS,2024,170:18. |
| APA | Xiao, Zheng.,Zheng, Jiahao.,Zhao, Junfeng.,Chen, Juan.,Wu, Xiaolin.,...&Lu, Lin.(2024).Two stages of gold mineralization in the Hebaoshan deposit: Evidence from the U-Pb dating and trace element geochemistry of rutile, monazite and apatite.ORE GEOLOGY REVIEWS,170,18. |
| MLA | Xiao, Zheng,et al."Two stages of gold mineralization in the Hebaoshan deposit: Evidence from the U-Pb dating and trace element geochemistry of rutile, monazite and apatite".ORE GEOLOGY REVIEWS 170(2024):18. |
入库方式： OAI收割
来源：广州地球化学研究所
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