Metallogenic characteristics of Shitoukengde intrusion and its implications for Ni-Co-(Cu) sulfide mineralization in East Kunlun
ABSTRACT: Xiarihamu deposit is the only super-large Ni-Co deposit found in East Kunlun orogenic belt (EKOB) until present. Shitoukengde (STKD) intrusion is considered to have the potential to become a large Ni-Co deposit in East Kunlun. In order to discuss the metallogenic potential, this study pres...
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KeAi Communications Co., Ltd.
2024-10-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2096519224001435 |
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| author | Xue-peng Duan Fan-cong Meng Zong-qi Wang Xiao-fei Yu |
| author_facet | Xue-peng Duan Fan-cong Meng Zong-qi Wang Xiao-fei Yu |
| author_sort | Xue-peng Duan |
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| description | ABSTRACT: Xiarihamu deposit is the only super-large Ni-Co deposit found in East Kunlun orogenic belt (EKOB) until present. Shitoukengde (STKD) intrusion is considered to have the potential to become a large Ni-Co deposit in East Kunlun. In order to discuss the metallogenic potential, this study present petrographical, geochemical data, and zircon U-Pb dating for the STKD intrusion. The STKD intrusion is hosted within mafic-ultramafic rocks which contain peridotite, pyroxenite and gabbro, and mainly intruded into the marble of the Paleoproterozoic Jinshuikou Group. Harzburgite and orthopyroxenite are the main country rocks for the Cu-Ni sulfide mineralization. Combine with the positive εHf(t) values (+1.1 to +8.6) of zircons, the enrichment of LILEs, depletion of HFSEs, and lower Ce/Pb ratios of whole rocks indicate that the parental magma was originated from the depleted asthenospheric mantle and experienced 5%–15% crustal contamination. Troctolite formed during the Early Devonian and it has weighted mean 206Pb/238U age of 412 Ma. Regional background information has indicated that the post-collisional extension setting has already existed during the Early Devonian, leading to the formation of STKD intrusion and Cu-Ni sulfide mineralization. STKD intrusion may have the potential to be one economic Cu-Ni sulfide deposit but seems unlikely to be a super-large one. |
| format | Article |
| id | doaj-art-4eba2468d05e4e74ad9f1afc2fbc9a24 |
| institution | Kabale University |
| issn | 2589-9430 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | China Geology |
| spelling | doaj-art-4eba2468d05e4e74ad9f1afc2fbc9a242025-08-20T03:32:58ZengKeAi Communications Co., Ltd.China Geology2589-94302024-10-017471472910.31035/cg2023070Metallogenic characteristics of Shitoukengde intrusion and its implications for Ni-Co-(Cu) sulfide mineralization in East KunlunXue-peng Duan0Fan-cong Meng1Zong-qi Wang2Xiao-fei Yu3Development and Research Center, China Geological Survey, Ministry of Natural Resources, Beijing 100037, China; China University of Geosciences (Beijing), Beijing 100083, China; Corresponding author: (Xue-peng Duan)Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, ChinaDevelopment and Research Center, China Geological Survey, Ministry of Natural Resources, Beijing 100037, ChinaDevelopment and Research Center, China Geological Survey, Ministry of Natural Resources, Beijing 100037, ChinaABSTRACT: Xiarihamu deposit is the only super-large Ni-Co deposit found in East Kunlun orogenic belt (EKOB) until present. Shitoukengde (STKD) intrusion is considered to have the potential to become a large Ni-Co deposit in East Kunlun. In order to discuss the metallogenic potential, this study present petrographical, geochemical data, and zircon U-Pb dating for the STKD intrusion. The STKD intrusion is hosted within mafic-ultramafic rocks which contain peridotite, pyroxenite and gabbro, and mainly intruded into the marble of the Paleoproterozoic Jinshuikou Group. Harzburgite and orthopyroxenite are the main country rocks for the Cu-Ni sulfide mineralization. Combine with the positive εHf(t) values (+1.1 to +8.6) of zircons, the enrichment of LILEs, depletion of HFSEs, and lower Ce/Pb ratios of whole rocks indicate that the parental magma was originated from the depleted asthenospheric mantle and experienced 5%–15% crustal contamination. Troctolite formed during the Early Devonian and it has weighted mean 206Pb/238U age of 412 Ma. Regional background information has indicated that the post-collisional extension setting has already existed during the Early Devonian, leading to the formation of STKD intrusion and Cu-Ni sulfide mineralization. STKD intrusion may have the potential to be one economic Cu-Ni sulfide deposit but seems unlikely to be a super-large one.http://www.sciencedirect.com/science/article/pii/S2096519224001435TroctoliteZircon U-PbMafic-ultramafic intrusionDepleted asthenospheric mantleCu-Ni sulfide mineralizationEast Kunlun orogenic belt |
| spellingShingle | Xue-peng Duan Fan-cong Meng Zong-qi Wang Xiao-fei Yu Metallogenic characteristics of Shitoukengde intrusion and its implications for Ni-Co-(Cu) sulfide mineralization in East Kunlun China Geology Troctolite Zircon U-Pb Mafic-ultramafic intrusion Depleted asthenospheric mantle Cu-Ni sulfide mineralization East Kunlun orogenic belt |
| title | Metallogenic characteristics of Shitoukengde intrusion and its implications for Ni-Co-(Cu) sulfide mineralization in East Kunlun |
| title_full | Metallogenic characteristics of Shitoukengde intrusion and its implications for Ni-Co-(Cu) sulfide mineralization in East Kunlun |
| title_fullStr | Metallogenic characteristics of Shitoukengde intrusion and its implications for Ni-Co-(Cu) sulfide mineralization in East Kunlun |
| title_full_unstemmed | Metallogenic characteristics of Shitoukengde intrusion and its implications for Ni-Co-(Cu) sulfide mineralization in East Kunlun |
| title_short | Metallogenic characteristics of Shitoukengde intrusion and its implications for Ni-Co-(Cu) sulfide mineralization in East Kunlun |
| title_sort | metallogenic characteristics of shitoukengde intrusion and its implications for ni co cu sulfide mineralization in east kunlun |
| topic | Troctolite Zircon U-Pb Mafic-ultramafic intrusion Depleted asthenospheric mantle Cu-Ni sulfide mineralization East Kunlun orogenic belt |
| url | http://www.sciencedirect.com/science/article/pii/S2096519224001435 |
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