| Reference Type | Journal (article/letter/editorial) |
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| Title | In-situ geochemical and isotopic analyses of multiple pyrite generations: Insights for the giant Beiya Au polymetallic ore genesis in southwestern China |
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| Journal | Ore Geology Reviews |
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| Authors | Zhang, Hong-Rui | Author |
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| He, Wen-Yan | Author |
| Yang, Li-Qiang | Author |
| Zhou, Yun-Man | Author |
| Zhang, Rui-Rui | Author |
| Zhao, Bo | Author |
| Year | 2024 |
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| Page(s) | 106195 |
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| URL | |
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| DOI | doi:10.1016/j.oregeorev.2024.106195Search in ResearchGate |
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| Generate Citation Formats |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 17532019 | Long-form Identifier | mindat:1:5:17532019:8 |
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| GUID | 0 |
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| Full Reference | Zhang, Hong-Rui, He, Wen-Yan, Yang, Li-Qiang, Zhou, Yun-Man, Zhang, Rui-Rui, Zhao, Bo (2024) In-situ geochemical and isotopic analyses of multiple pyrite generations: Insights for the giant Beiya Au polymetallic ore genesis in southwestern China. Ore Geology Reviews, 106195 doi:10.1016/j.oregeorev.2024.106195 |
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| Plain Text | Zhang, Hong-Rui, He, Wen-Yan, Yang, Li-Qiang, Zhou, Yun-Man, Zhang, Rui-Rui, Zhao, Bo (2024) In-situ geochemical and isotopic analyses of multiple pyrite generations: Insights for the giant Beiya Au polymetallic ore genesis in southwestern China. Ore Geology Reviews, 106195 doi:10.1016/j.oregeorev.2024.106195 |
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| In | Link this record to the correct parent record (if possible) |
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| Abstract/Notes | The Beiya giant Au polymetallic deposit is located in the Sanjiang Tethyan Orogen, northwestern Yunnan (SW China). The ores occur as disseminations or veinlets in granite porphyry. To unravel the ore genesis at Beiya, we analyzed the ore-related sulfide trace elements and sulfur isotopes. Py-1 is mainly euhedral-subhedral medium-/coarse-grained (size: > 100 ΞΌm), with relatively smooth surface and some pores. Py-2 is mostly coarse grained (size: 50β200 ΞΌm), with well-developed pores and inclusions. The pyrite is usually Co-Cu rich and V-Ti-Sb poor, resembling typical magmatic-hydrothermal pyrite. In addition, the Co/Ni ratios decrease from pyrite-1 (Py-1) to pyrite-2b (Py-2b), suggesting that their chemical compositions are controlled by magma fractionation. We found that Co, Ni, As, and Se occurred as solid solution in the pyrite lattice, while Pb, Bi, Ag, and Mn occurred mainly in inclusions in the pyrite. Pb and Bi display good positive correlation, suggesting that they occurred as inclusions or nano-particles in pyrite lattice. The pyrite samples have sulfur isotope value (Ξ΄34S) of 0.62β3.45 β° (avg. 2.35 β°) for Py-1, 0.18β3.12 β° (avg. 1.85 β°) for Py-2a, and 0.62β4.18 β° (avg. 2.51 β°) for Py-2b. These characteristics may have played a vital role in the initial enrichment of Cu, Mo, Au, and ultimately formed the complex polymetallic system at Beiya. |
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