Comparison of natures of barren and fertile intrusions in the Kounrad ore district, Kazakhstan and its implication for mineralization
文献类型：期刊论文
| 作者 | Li ChangHao1,3,4; Pan HongDi5; Suo QingYu1,3,4; Chu XiangKai1,3,4; Seitmuratova, Eleonora2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 39期号:11页码:3263-3283 |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2023.11.04 |
| 英文摘要 | Numerous large to giant porphyry Cu deposits have developed in the Central Asian Orogenic Belt. Although these deposits usually developed large-scale magmatism at similar ages, there is usually only a few magmatism associated with mineralization. Therefore, distinguishing between mineralized and barren magmas in the ore district is crucial to prospecting. To investigate this question, this study performs textural and compositional analyses of apatite, amphibole, biotite, and plagioclase and whole -rock major element analyses of weakly altered rocks from the Carboniferous barren intrusions and fertile granodiorite porphyry in the Kounrad ore district, Kazakhstan. Results show that both the barren intrusions and fertile granodiorite porphyry are H2O -rich ( >similar to-4%) oxidized ( > ANNO +1. 63) magmas, which belong to the medium K or high K calcium -alkaline series rocks. Significant An values variations in plagioclase ( Delta An in the range of 26 similar to 34) and positive correlation with FeO content in barren intrusions suggest that it underwent magma mixing during the intrusion formation, whereas this process was not evident in the fertile granodiorite porphyry is not significantly different from that of the barren intrusions, but the fertile granodiorite porphyry has higher Cl and S content. Studies on the texture and composition of magmatic minerals indicate that the magma that migrates to the shallow part of the crust still contains sufficient Cl, S, and metal elements is the key to the formation of porphyry Cu deposits in the Kounrad ore district. In Kounrad ore district, magmas with favorable Cu mineralization conditions ( e. g., suitable oxygen fugacity, H2O content, and presence of mafic magma recharge) may lose Cl, S, and metal elements from the magma because of early fluid exsolution at deeper depths ( e. g., barren gabbro, diorite, granodiorite), or the magma has a low Cl content and low Cu solubility, resulting in low ability to transport and enrich metal elements ( e. g., barren granite), ultimately failing to form porphyry Cu deposits. The results of this study show that the Cl and contents of magma in the Kounrad ore district are effective signs to distinguish fertile and barren intrusions, while the oxygen fugacity, H2O content, and F content of magma are no significant difference. |
| WOS关键词 | PARTITIONING BEHAVIOR ; CENTRAL-ASIA ; CU DEPOSITS ; PORPHYRY ; MELT ; METALLOGENY ; SOLUBILITY ; SATURATION ; EVOLUTION ; MINERALS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001097943000004 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111149]  |
| 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 | Li ChangHao |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.K Satpaev Inst Geol Sci, Lab Geol Format, Alma Ata 050010, Kazakhstan 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 5.Changan Univ, Coll Earth Sci, Xian 710054, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li ChangHao,Pan HongDi,Suo QingYu,et al. Comparison of natures of barren and fertile intrusions in the Kounrad ore district, Kazakhstan and its implication for mineralization[J]. ACTA PETROLOGICA SINICA,2023,39(11):3263-3283. |
| APA | Li ChangHao,Pan HongDi,Suo QingYu,Chu XiangKai,&Seitmuratova, Eleonora.(2023).Comparison of natures of barren and fertile intrusions in the Kounrad ore district, Kazakhstan and its implication for mineralization.ACTA PETROLOGICA SINICA,39(11),3263-3283. |
| MLA | Li ChangHao,et al."Comparison of natures of barren and fertile intrusions in the Kounrad ore district, Kazakhstan and its implication for mineralization".ACTA PETROLOGICA SINICA 39.11(2023):3263-3283. |
入库方式： OAI收割
来源：地质与地球物理研究所
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