The Influence of Fluid-Exsolving Depth on Mineralization Quality: Evidence from Biotite and Zircon Mineralogy and Fluid Inclusions from the 460 Gaodi Porphyry Mo-Cu Deposit, NE China
文献类型：期刊论文
| 作者 | Kan, Jing1,2; Qin, Kezhang1,2; Wang, Le2,3; Hui, Kaixuan1,2; Han, Ri1,2 |
| 刊名 | MINERALS
 |
| 出版日期 | 2023-05-20 |
| 卷号 | 13期号:5页码:25 |
| 关键词 | 460 Gaodi porphyry Mo-Cu deposit biotite-zircon mineralogy fluid-exsolving depth oxygen fugacity fluid inclusion |
| DOI | 10.3390/min13050699 |
| 英文摘要 | The recently discovered 460 Gaodi porphyry Mo-Cu deposit is a sub-economic deposit characterized by low Mo-Cu grades, dispersed mineralization, and separated Mo- and Cu-ore bodies. This study aims to elucidate the factors underlying this type of sub-economic mineralization. Electron-microprobe analyses of biotite from ore-related granite porphyry yielded Ti-in-biotite crystallization temperatures of 677-734 ? (an average of 719 ?) and biotite phenocryst crystallization depths of 6.0 to 12.9 km. LA-ICP-MS analyses of zircons from the same sample revealed average zircon Ce4+/Ce3+ ratios of 299.7 and elevated zircon lg(fO(2)) ratios, with an average ?FMQ of +6.6 ? 1.9. These discoveries suggest that the magma responsible for ore formation boasts a high degree of oxidation, yet also possesses a magma chamber located at a significant depth within the upper crust. This implies an extensive exsolving depth for fluids. Furthermore, our microthermometry analysis of fluid inclusions reveals that a portion of the fluid experiences considerable conductive cooling as it ascends along the conduit, owing to the depth of fluid exsolution. This process results in the ore fluids remaining in the liquid-only region without undergoing boiling, which is conducive to the enrichment of metals. We emphasize the fact that fluid-exsolving depth plays a critical role in determining the metal grades and economic value of a porphyry deposit by regulating the P-T evolution path of the ore fluids |
| WOS关键词 | MAGMATIC-HYDROTHERMAL FLUIDS ; TI-IN-ZIRCON ; OXIDATION-STATE ; PARTITION-COEFFICIENTS ; MOLYBDENUM DEPOSIT ; COPPER DEPOSITION ; INTRUSIVE ROCKS ; AQUEOUS FLUID ; CALC-ALKALINE ; OROGENIC BELT |
| 资助项目 | National Natural Science Foundation of China[42202085] ; National Key Research and Development Program of China[2017YFC0601306] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000998319200001 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110968]  |
| 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 |
| 通讯作者 | Qin, Kezhang |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 3.Univ Geneva, Dept Earth Sci, CH-1205 Geneva, Switzerland |
| 推荐引用方式 GB/T 7714 | Kan, Jing,Qin, Kezhang,Wang, Le,et al. The Influence of Fluid-Exsolving Depth on Mineralization Quality: Evidence from Biotite and Zircon Mineralogy and Fluid Inclusions from the 460 Gaodi Porphyry Mo-Cu Deposit, NE China[J]. MINERALS,2023,13(5):25. |
| APA | Kan, Jing,Qin, Kezhang,Wang, Le,Hui, Kaixuan,&Han, Ri.(2023).The Influence of Fluid-Exsolving Depth on Mineralization Quality: Evidence from Biotite and Zircon Mineralogy and Fluid Inclusions from the 460 Gaodi Porphyry Mo-Cu Deposit, NE China.MINERALS,13(5),25. |
| MLA | Kan, Jing,et al."The Influence of Fluid-Exsolving Depth on Mineralization Quality: Evidence from Biotite and Zircon Mineralogy and Fluid Inclusions from the 460 Gaodi Porphyry Mo-Cu Deposit, NE China".MINERALS 13.5(2023):25. |
入库方式： OAI收割
来源：地质与地球物理研究所
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