Zircon U-Pb and Whole-Rock Geochemistry of the Aolunhua Mo-Associated Granitoid Intrusion, Inner Mongolia, NE China
The Aolunhua Mo deposit is a typical porphyry deposit, which is located in the middle southern section of the Da Hinggan Range metallogenic belt. Here, we report LA-ICP-MS zircon U-Pb age data from the Mo-associated granitoid, together with the element geochemistry of the zircons, discussing the sou...
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MDPI AG
2024-02-01
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| author | Hao Li Xuguang Li Jiang Xin Yongqiang Yang |
| author_facet | Hao Li Xuguang Li Jiang Xin Yongqiang Yang |
| author_sort | Hao Li |
| collection | DOAJ |
| description | The Aolunhua Mo deposit is a typical porphyry deposit, which is located in the middle southern section of the Da Hinggan Range metallogenic belt. Here, we report LA-ICP-MS zircon U-Pb age data from the Mo-associated granitoid, together with the element geochemistry of the zircons, discussing the source material of the ore-forming rock of the deposit. The zircon data constrain the crystallization age of the granite porphyry as 135.0 ± 1.0 Ma, correlating it with the widespread Yanshanian intermediate–felsic magmatic activity. The Th/U ratio of the zircon is greater than 0.1, with a significant positive Ce anomaly (Ce* = 1.72–188.71) and a negative Eu anomaly (Eu* = 0.05–0.57). The zircons show depleted LREE and enriched HREE patterns, as well as low La and Pr contents, suggesting crystallization from crust-derived magmas. Based on the geology of the ore deposit and the age data, in combination with the regional geodynamic evolution, we infer that the Aolunhua Mo deposit was formed near the peak stage of Sn poly-metallic metallogenesis in the Da Hinggan Range region at around 140 Ma, associated with a tectonic setting, characterized by the transition from compression to extension. Based on a comparison with the newly found Mo deposits along the banks of the Xilamulun River, we propose that the Tianshan–Linxi is an important Mo-metallogenic belt. It also suggests an increased likelihood for the occurrence of Mo along the north bank of the Xilamulun River. |
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| language | English |
| last_indexed | 2024-04-24T17:59:18Z |
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| spelling | doaj.art-5e99e94899fb482886320cc5481739482024-03-27T13:56:09ZengMDPI AGMinerals2075-163X2024-02-0114322610.3390/min14030226Zircon U-Pb and Whole-Rock Geochemistry of the Aolunhua Mo-Associated Granitoid Intrusion, Inner Mongolia, NE ChinaHao Li0Xuguang Li1Jiang Xin2Yongqiang Yang3State Key Laboratory of Geological and Mineral Resources, China University of Geosciences, Beijing 100083, ChinaState Key Laboratory of Geological and Mineral Resources, China University of Geosciences, Beijing 100083, ChinaXinjiang Nonferrous Metal Industry (Group) Co., Ltd., Ürümqi 830000, ChinaState Key Laboratory of Geological and Mineral Resources, China University of Geosciences, Beijing 100083, ChinaThe Aolunhua Mo deposit is a typical porphyry deposit, which is located in the middle southern section of the Da Hinggan Range metallogenic belt. Here, we report LA-ICP-MS zircon U-Pb age data from the Mo-associated granitoid, together with the element geochemistry of the zircons, discussing the source material of the ore-forming rock of the deposit. The zircon data constrain the crystallization age of the granite porphyry as 135.0 ± 1.0 Ma, correlating it with the widespread Yanshanian intermediate–felsic magmatic activity. The Th/U ratio of the zircon is greater than 0.1, with a significant positive Ce anomaly (Ce* = 1.72–188.71) and a negative Eu anomaly (Eu* = 0.05–0.57). The zircons show depleted LREE and enriched HREE patterns, as well as low La and Pr contents, suggesting crystallization from crust-derived magmas. Based on the geology of the ore deposit and the age data, in combination with the regional geodynamic evolution, we infer that the Aolunhua Mo deposit was formed near the peak stage of Sn poly-metallic metallogenesis in the Da Hinggan Range region at around 140 Ma, associated with a tectonic setting, characterized by the transition from compression to extension. Based on a comparison with the newly found Mo deposits along the banks of the Xilamulun River, we propose that the Tianshan–Linxi is an important Mo-metallogenic belt. It also suggests an increased likelihood for the occurrence of Mo along the north bank of the Xilamulun River.https://www.mdpi.com/2075-163X/14/3/226Mo-associated granitoidmetallogenic rock bodyzircon trace elementsAolunhua Mo depositDa Hinggan RangeNE China |
| spellingShingle | Hao Li Xuguang Li Jiang Xin Yongqiang Yang Zircon U-Pb and Whole-Rock Geochemistry of the Aolunhua Mo-Associated Granitoid Intrusion, Inner Mongolia, NE China Minerals Mo-associated granitoid metallogenic rock body zircon trace elements Aolunhua Mo deposit Da Hinggan Range NE China |
| title | Zircon U-Pb and Whole-Rock Geochemistry of the Aolunhua Mo-Associated Granitoid Intrusion, Inner Mongolia, NE China |
| title_full | Zircon U-Pb and Whole-Rock Geochemistry of the Aolunhua Mo-Associated Granitoid Intrusion, Inner Mongolia, NE China |
| title_fullStr | Zircon U-Pb and Whole-Rock Geochemistry of the Aolunhua Mo-Associated Granitoid Intrusion, Inner Mongolia, NE China |
| title_full_unstemmed | Zircon U-Pb and Whole-Rock Geochemistry of the Aolunhua Mo-Associated Granitoid Intrusion, Inner Mongolia, NE China |
| title_short | Zircon U-Pb and Whole-Rock Geochemistry of the Aolunhua Mo-Associated Granitoid Intrusion, Inner Mongolia, NE China |
| title_sort | zircon u pb and whole rock geochemistry of the aolunhua mo associated granitoid intrusion inner mongolia ne china |
| topic | Mo-associated granitoid metallogenic rock body zircon trace elements Aolunhua Mo deposit Da Hinggan Range NE China |
| url | https://www.mdpi.com/2075-163X/14/3/226 |
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