| Reference Type | Journal (article/letter/editorial) |
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| Title | Geochemistry, isotopes, and morphology of coarse-grained pyrite from the Jinqingding gold deposit, Jiaodong Peninsula: Implications for episodic ore-forming fluid evolution |
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| Journal | Ore Geology Reviews |
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| Authors | Li, Shi-Sheng | Author |
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| Zang, Chun-Juan | Author |
| Li, Lin | Author |
| Li, Sheng-Rong | Author |
| Tao, Wei | Author |
| Cheng, Xiang | Author |
| Year | 2025 | Volume | < 184 > |
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| Page(s) | 106742 |
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| URL | |
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| DOI | doi:https://doi.org/10.1016/j.oregeorev.2025.106742Search in ResearchGate |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 18577964 | Long-form Identifier | mindat:1:5:18577964:1 |
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| GUID | 0 |
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| Full Reference | Li, Shi-Sheng; Zang, Chun-Juan; Li, Lin; Li, Sheng-Rong; Tao, Wei; Cheng, Xiang (2025) Geochemistry, isotopes, and morphology of coarse-grained pyrite from the Jinqingding gold deposit, Jiaodong Peninsula: Implications for episodic ore-forming fluid evolution. Ore Geology Reviews, 184. 106742 doi:10.1016/j.oregeorev.2025.106742 |
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| Plain Text | Li, Shi-Sheng; Zang, Chun-Juan; Li, Lin; Li, Sheng-Rong; Tao, Wei; Cheng, Xiang (2025) Geochemistry, isotopes, and morphology of coarse-grained pyrite from the Jinqingding gold deposit, Jiaodong Peninsula: Implications for episodic ore-forming fluid evolution. Ore Geology Reviews, 184. 106742 doi:10.1016/j.oregeorev.2025.106742 |
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| In | Link this record to the correct parent record (if possible) |
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| Abstract/Notes | The Jinqingding gold deposit, a representative orebody in the Jiaodong gold province, hosts abundant coarse-grained pyrites that exhibit diverse morphologies, including cube (a), octahedron (o), tetragonal trisoctahedron (m), pentagonal dodecahedron (e), and combined forms (e.g., e + a). These pyrites display distinct morphological evolution with cores dominated by Pya/Pyo, mantles of Pyo/Pym, and rims dominated by Pye and Pye + a. Microstructurally, two pyrite types are identified: inclusion- and pore-rich pyrite (Pyi-j; i/j = morphology codes) and inclusion- and pore-poor pyrite (Pyi). Integrated morphological evolution, microstructural characterization, in-situ elements, and sulfur isotope analyses elucidate mineralization processes at the microscale. Morphological evolution indicates a cooling trajectory from high to intermediate temperatures, coupled with increasing sulfur supersaturation. Trace elements (e.g., Au, Ag, Te, and Bi) are enriched in Pyi-j and formed by rapid pyrite crystallization and fluid immiscibility during pressure drops triggered by the “fault-valve” process. Gold primarily exists in the form of a solid solution (Au+), with enrichment processes that are controlled by Te and Bi rather than As. Sulfur isotopes (δ34S: 7.8–22.2 ‰) display a core-to-rim decrease that is driven by oxidation (primary driver), Rayleigh fractionation and cooling during the “fault-valve” process. This study establishes that the “fault-valve” process governed episodic fluid pressure drops, promoting pyrite crystallization and metal deposition. The findings provide a microscale record of fluid evolution and highlight the critical roles of oxidation, temperature, and sulfur dynamics in gold mineralization. |
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