Magnetite texture and trace element evolution in the Shaquanzi Fe-Cu deposit, Eastern Tianshan, NW China
文献类型：期刊论文
| 作者 | Hu, Xia2,4; Xiao, Bing1,4,5; Jiang, Hongjun6; Huang, Jianhan3 |
| 刊名 | ORE GEOLOGY REVIEWS
 |
| 出版日期 | 2023-03-01 |
| 卷号 | 154页码:13 |
| 关键词 | Magnetite Texture evolution Element composition Shaquanzi Fe -Cu deposit Eastern Tianshan |
| ISSN号 | 0169-1368 |
| DOI | 10.1016/j.oregeorev.2023.105306 |
| 英文摘要 | The Shaquanzi deposit is an important Fe-Cu deposit in the Yamansu Fe mineralization belt, Eastern Tianshan. Three types of magnetite were distinguished based on the textural and mineral assemblages, including the platy mushketovite (TA), granular magnetite coexisting with K-feldspar and epidote (TB), and granular magnetite intergrown with pyrite (TC). TA magnetite consists of three generations, including a bright core (TA-1), a dark -gray inner rim (TA-2), and a light-gray outer rim (TA-3), under BSE observations. TA-1 magnetite was trans-formed from the primary hematite due to a sharply reduced oxygen fugacity and retains its platy pseudomorph. With the changing temperature (increase or decrease), TA-1 magnetite underwent dissolution and re -precipitation (DRP) processes to form TA-2 and TA-3 magnetite. TB magnetite consists of two generations (TB -1 and TB-2). TB-1 magnetite contains abundant mineral inclusions and microporosity. With the decrease of fO2 and temperature, TB-1 magnetite underwent a fluid-assisted recrystallization process to form TB-2 magnetite with foam texture. TC magnetite consists of four different generations (TC-1, TC-2, TC-3, and TC-4). TC-1 magnetite with densely-distributed oscillatory zonings (generally smaller than 1 mu m) is surrounded by the darker TC-2 magnetite. TC-2 magnetite with foam texture may be formed by recrystallization of TC-1 magnetite. TC-3 magnetite replaced or cut TC-2 magnetite, indicating that it was formed by the DRP process of TC-2 magnetite. Following periodic changes of fO2 and temperature, TC-4 magnetite with oscillatory zones formed around TC-3 magnetite. This study proposes a new Fe/(Mg + Al + Mn) vs Ti discrimination diagram to distinguish hydrothermal and magmatic magnetite. Magnetite compositions of the Shaquanzi deposit are quite different from those of magmatic magnetite, but very similar to those observed in the hydrothermal system such as IOCG and skarn deposit, indicating that magnetite of the Shaquanzi deposit was formed by hydrothermal process rather than magmatic differentiation. |
| WOS研究方向 | Geology ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000920429300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/72432]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | Xiao, Bing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Anhui 230026, Peoples R China 3.North China Univ Water Resources & Elect Power, Coll Geosci & Engn, Zhengzhou 450046, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, POB 1131, Guangzhou 510640, Guangdong, Peoples R China 6.Sino Shaanxi Nucl Ind Grp, Geol Party 214, Xian 710100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Xia,Xiao, Bing,Jiang, Hongjun,et al. Magnetite texture and trace element evolution in the Shaquanzi Fe-Cu deposit, Eastern Tianshan, NW China[J]. ORE GEOLOGY REVIEWS,2023,154:13. |
| APA | Hu, Xia,Xiao, Bing,Jiang, Hongjun,&Huang, Jianhan.(2023).Magnetite texture and trace element evolution in the Shaquanzi Fe-Cu deposit, Eastern Tianshan, NW China.ORE GEOLOGY REVIEWS,154,13. |
| MLA | Hu, Xia,et al."Magnetite texture and trace element evolution in the Shaquanzi Fe-Cu deposit, Eastern Tianshan, NW China".ORE GEOLOGY REVIEWS 154(2023):13. |
入库方式： OAI收割
来源：广州地球化学研究所
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