Origin of Quartz Diorite and Mafic Enclaves in the Delong Gold-Copper Deposit and Evaluation of the Gold-Copper Mineralization Potential
文献类型：期刊论文
| 作者 | Chen, Jiajie2; Fu, Lebing3; Leng, Chengbiao2; Zhao, Xu1; Ma, Jian2; Gao, Hongze2; Xia, Yu2 |
| 刊名 | MINERALS
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 13期号:9页码:21 |
| 关键词 | gold-copper deposit magma fertility oxygen fugacity East Kunlun Orogen |
| DOI | 10.3390/min13091202 |
| 英文摘要 | The Triassic Paleo-Tethyan magmatic belt in the East Kunlun Orogen (EKO) hosts a small number of porphyry-skarn deposits. The controls of these deposits, especially those in the eastern EKO, are poorly understood. In this contribution, we report new petrological, zircon U-Th-Pb-Hf isotopic, whole-rock elemental with Sr-Nd isotopic, and mineral chemistry data of the Delong quartz diorite and mafic enclaves to constrain their petrogenesis and metal fertility. The quartz diorite and mafic enclaves are emplaced in the Late Triassic (ca. 234 Ma). They are medium-K, metaluminous, enriched in large-ion lithophile elements (e.g., Rb, Ba, Th) and light rare earth elements (e.g., La, Ce, Nd), and relatively depleted in high field strength elements (e.g., Nb, Ta, Ti, P) and heavy rare earth elements (e.g., Gd, Er, Tm, Yb). The quartz diorite show similar (Sr-87/Sr-86)(i) (0.712584 similar to 0.713172) and more depleted epsilon Nd(t) (-6.4 similar to-5.7) and epsilon Hf(t) (-2.3 similar to+2.6) to those of mafic enclaves ((Sr-87/Sr-86)(i) = 0.712463 similar to 0.713093; epsilon Nd(t) = -6.4 similar to-6.0; epsilon Hf(t) = -9.4 similar to-4.8). Geochemical compositions of zircon, amphibole, and biotite yield high water content (5.3 wt.%similar to 6.9 wt.% and 6.1 wt.%similar to 7.3 wt.% based on amphibole, respectively) and high redox state for both the quartz diorite and mafic enclaves. These data, together with petrography, indicate the Delong intrusion was formed by mingling of magmas from enriched mantle and lower continental crust with juvenile materials. The oxidized and water-rich features of these magmas denote they have potential for porphyry Cu (+/- Au +/- Mo) deposits, as do some Triassic magmatic rocks in the eastern EKO that show similar geochemical and petrographic characteristics with the Delong intrusion. |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:001074049200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74905]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Chen, Jiajie; Fu, Lebing |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 2.East China Univ Technol, State Key Lab Nucl Resources & Environm, Sch Earth Sci, Nanchang 330013, Peoples R China 3.China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jiajie,Fu, Lebing,Leng, Chengbiao,et al. Origin of Quartz Diorite and Mafic Enclaves in the Delong Gold-Copper Deposit and Evaluation of the Gold-Copper Mineralization Potential[J]. MINERALS,2023,13(9):21. |
| APA | Chen, Jiajie.,Fu, Lebing.,Leng, Chengbiao.,Zhao, Xu.,Ma, Jian.,...&Xia, Yu.(2023).Origin of Quartz Diorite and Mafic Enclaves in the Delong Gold-Copper Deposit and Evaluation of the Gold-Copper Mineralization Potential.MINERALS,13(9),21. |
| MLA | Chen, Jiajie,et al."Origin of Quartz Diorite and Mafic Enclaves in the Delong Gold-Copper Deposit and Evaluation of the Gold-Copper Mineralization Potential".MINERALS 13.9(2023):21. |
入库方式： OAI收割
来源：广州地球化学研究所
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