Determining the impact of magma water contents on porphyry Cu fertility: Constraints from hydrous and nominally anhydrous mineral analyses
文献类型：期刊论文
| 作者 | Huang, Wenting1,6,7; Xia, Xiao-Ping5,6; Sun, Xiaoming4; Cui, Zexian5,6; Liuyun, Ouyang1,6; Zhang, Jian3; Chen, Xilian2; Zheng, Yi4; Liang, Huaying1,6 |
| 刊名 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN
 |
| 出版日期 | 2024 |
| 卷号 | 136期号:1-2页码:673-688 |
| ISSN号 | 0016-7606 |
| 英文摘要 | Most large-scale porphyry -style mineralization is genetically associated with oxidized, sulfur -rich, and hydrous magmas, the sources of which were enriched in mantlederived or juvenile crust-derived materials. Geochemical indices for these features can distinguish fertile magmas and barren magmas. However, fertile magmas that generate different -sized porphyry deposits are usually geochemically indistinguishable, and the factors controlling the size of porphyry mineralization are poorly understood. Here, we used zircon H2O contents and the compositions of apatite hosted in zircon, phenocrysts, and groundmass to compare the water contents and volatile evolution of fertile magmas in the Yulong ore belt, Tibet, which generated giant-, large-, and medium-sized porphyry deposits. We found that these porphyries have comparable major- and trace -element and zircon Hf-O isotope compositions, with high oxygen fugacity and sulfur contents. A negative correlation between X- Ap (Cl)/ X-Ap (OH) versus of apatites suggests that the magmas Cl Ap consistently achieved H2O saturation before zircon crystallization, and zircon hydroxyl contents reveal that the water contents of the melt positively correlate with the size of the deposits, consistent with larger deposits achieving H2O saturation at deeper crustal levels. The deeper H2O saturation also caused larger amounts of Cl extraction, as indicated by the trends of increasing XAp X F/ and deCl Ap creasing X- Ap (Cl) X-Ap (OH) with larger deposit sizes. Ap These data sets can be reconciled by magmas forming larger deposits having higher H2O contents and suggest that the H2O content is a key control on their fertility. Our study highlights the utility of integrated hydrous and nominally anhydrous mineral analyses for constraining enigmatic magmatic volatile processes in magmatic ore -forming systems. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001172946200001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/77091]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Xia, Xiao-Ping; Liang, Huaying |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 2.East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Peoples R China 3.Nanning Normal Univ, Key Lab Environm Change & Resources Use Beibu Gulf, Minist Educ, Nanning 530001, Peoples R China 4.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Prov Key Lab Geol Proc & Mineral Resour, Guangzhou 510275, Peoples R China 5.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 6.Chinese Acad Sci, Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 7.Trinity Coll Dublin, Dept Geol, Dublin, Ireland |
| 推荐引用方式 GB/T 7714 | Huang, Wenting,Xia, Xiao-Ping,Sun, Xiaoming,et al. Determining the impact of magma water contents on porphyry Cu fertility: Constraints from hydrous and nominally anhydrous mineral analyses[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2024,136(1-2):673-688. |
| APA | Huang, Wenting.,Xia, Xiao-Ping.,Sun, Xiaoming.,Cui, Zexian.,Liuyun, Ouyang.,...&Liang, Huaying.(2024).Determining the impact of magma water contents on porphyry Cu fertility: Constraints from hydrous and nominally anhydrous mineral analyses.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,136(1-2),673-688. |
| MLA | Huang, Wenting,et al."Determining the impact of magma water contents on porphyry Cu fertility: Constraints from hydrous and nominally anhydrous mineral analyses".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 136.1-2(2024):673-688. |
入库方式： OAI收割
来源：广州地球化学研究所
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