LA-ICP-MS zircon U-Pb dating of granite porphyry and 40Ar/39Ar dating of chromian sericite of the Shuangqishan and Xiaoban gold deposits in central Fujian, South China and their restriction on gold mineralization

Fan, Fei‐Peng; Fan, Xueli; Chen, Shizhong; Xing, Guangfu; Yan, Zhaokun; Chen, Fan

doi:10.1016/j.oregeorev.2022.105027

Cited by 3 publications

(4 citation statements)

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“…There are three stages of granites in the Shuangqishan Au deposit by zircon U–Pb dating, the pre‐mineralization stage (166.0 ± 0.8 Ma), the mineralization stage (153.0–151.0 Ma) and the post‐mineralization stage (129.0–120.0 Ma). The metallogenic time is consistent with the time of the gold formation in the Shuangqishan Au deposit reported by Bao et al (2021) and Fan et al (2022). The results indicate that the gold mineralization is closely related to the granite porphyry in the late stage of the Late Jurassic.…”

Section: Discussionsupporting

confidence: 90%

“…The zircons of the grayish‐green granite porphyry (PD512‐1‐16TW 1 ) have been described by Fan et al (2022). The zircons showed an igneous origin and the 206 Pb/ 238 U age is 149 ± 1 Ma.…”

Section: Resultsmentioning

confidence: 98%

“…The Southeast China was in the Paleo‐Pacific tectonic regime from the Middle Jurassic to the Early Cretaceous. The granite Nb‐Ta‐Rb‐W deposits (Fan et al, 2022) and are related to highly differentiated I‐type granitoids formed when the subducted plate was teared up in several locations at the late stage of the Middle Jurassic (~166 Ma) (Figure 20). Meanwhile, the W‐Sn rare metals mineralization and highly differentiated magmatism reached a climactic stage at 165–146 Ma in the Nanling region (Chen et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…The Shuangqishan Au deposit (>15 t) is located in the Dehua‐Youxi‐Yongtai (DYY) goldfield in the southeastern Cathaysia Block, South China, and is the largest Au deposit in the central Fujian Province (Liu, Chen, Liu, Li et al, 1999; Liu, Chen, Liu, Xu et al, 1999) which is one of the four most important concentrated distribution area of Au deposits in Fujian Province (Figure 2a). There are more than 47 Au deposits of different genetic types in the DYY, including the medium‐low temperature magmatic‐hydrothermal Au deposits such as Shuangqishan and Xiaoban (Bao et al, 2020, 2021; Fan et al, 2022 under review), low sulfidation epithermal deposits the Qiucun, Dongyang and Xiaban (Huang et al, 2007; Li, Li, Santosh, Zhu, & Suo, 2018; Ni et al, 2018), intermediate sulfidation epithermal deposits such as Ancun (Li, Ni, Bao, Li, et al, 2018) and Qingyunshan (Xiao et al, 2021) deposits, Qiucheng porphyry Mo deposit (Fan et al, 2021; Zhang, 2013). The Shuangqishan gold ore bodies are hosted by Proterozoic metamorphic rocks and Caledonian alaskite, many controversial genetic types and metallogenic time have been proposed since its discovery in 1990.…”

Section: Introductionmentioning

confidence: 99%

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Age, geochemistry, mineralization, and tectonic significance of felsic‐intermediate dikes in Shuangqishan Au deposit, Cathaysia block, South China

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et al. 2023

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The Shuangqishan Au deposit (>15 t) is located in the Dehua‐Youxi‐Yongtai goldfield of the southeastern Cathaysia Block, South China. There are three stages of granites in the Shuangqishan Au deposit, the pre‐mineralization granite porphyry formed in the Middle Jurassic (~166.0 ± 0.8 Ma), the metallogenic granite porphyry and monzonite porphyry formed in the late stage of the Late Jurassic (153–151 Ma), the post‐mineralization granites (granite porphyry, the masanophyre, the dioritic porphyrite) formed in the Early Cretaceous (129.0–120.0 Ma). All rocks are characterized by high‐K calc‐alkaline and shoshonities series, the per‐mineralization granites are enriched in Rb, Th, K, Zr, and Hf, depleted in Ba, P, and Ti, significant negative Eu anomaly and distinctly tetrad effect with highly fractionated I‐type granitoids characteristics. The metallogenic granites and the post‐mineralization granite porphyry are enriched in K, Rb, Th, Ce, Zr, Hf, and Y, enriched in LREE, strongly depleted in Sr, Ba Ta, P, Ti, have moderate negative Eu anomalies with I‐type granites characteristics. However, the post‐mineralization dioritic porphyrite displays strong depletions Sr, Ta, P, and Ti whereas Rb, Th, Ce, and Sm are enriched, enriched in LREE with weakly negative Eu anomalies. The metallogenic granite porphyry is significantly enriched in Au, As, Sb, W, Mo, and Bi, especially enriched in Au. The Lu‐Hf isotopic data indicate that the magma source comes from the partial melting of the Paleoproterozoic crust, the minor part from the mantle in the Early Cretaceous. Therefore, we propose that the granitoids formed in the subducted plate environment from the Middle Jurassic to the Early Cretaceous, the Late Jurassic I‐type granites (~153–146 Ma), The Shuangqishan Au deposit was formed in the stage from compression to extension, the Early Cretaceous granites (~129–114 Ma) mainly formed in the extensional environment and destroyed gold ore bodies.

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Section: Discussionsupporting

confidence: 90%

Section: Resultsmentioning

confidence: 98%