Jinbao district (Bengchong, Nanshen, Pingmen, Paiwang)
Eastern Guizhou, Xiangxi-Qiandong polymetallic belt, China
Other hydrothermalZn-Pb (Cu)
- Type
- Polymetallic Zn-Pb-(Cu) veins in Neoproterozoic metasediments
Small sphalerite-galena-quartz vein deposits hosted by tuffaceous metasandstones of the Xiajiang Group, controlled by the Kaili-Sandu fault and distinct from the regional MVT deposits. Lithium in quartz fluid inclusions, mostly below +10 ‰, points to a fluid from a concealed granitic magma; heavier values reflect fractionation during exsolution and mixing with other fluids. Indicative coordinates. Sphalerite zinc and cadmium become heavier from stage I to stage II, and Zn/Cd ratios also point to a magmatic-hydrothermal source rather than the Banxi Group host rocks.
δ7Li in ‰ (per mil) Values of the same system
Standard : IRMM-016
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 9.1 ± 0.69 ‰ | 8.2 / 10 ‰ | 7 | gangue quartz fluid inclusions, Bengchong deposit Mean and standard deviation recalculated from 7 samples, Table 1. | Xu et al. (2018), Origin of ore-forming fluids of the Zn-Pb-(Cu) deposits in the Jinbao m… |
| 10.3 ‰ | 1 | gangue quartz fluid inclusions, Nanshen deposit One analysis (NS-8-2), Table 1. | Xu et al. (2018), Origin of ore-forming fluids of the Zn-Pb-(Cu) deposits in the Jinbao m… | |
| 13.45 ± 0.21 ‰ | 13.3 / 13.6 ‰ | 2 | gangue quartz fluid inclusions, Pingmen deposit Mean and standard deviation recalculated from 2 samples, Table 1. The text swaps the Pingmen and Paiwang ranges relative to Table 1; values here follow the table. | Xu et al. (2018), Origin of ore-forming fluids of the Zn-Pb-(Cu) deposits in the Jinbao m… |
| 14.37 ± 2.06 ‰ | 12.2 / 16.3 ‰ | 3 | gangue quartz fluid inclusions, Paiwang deposit Mean and standard deviation recalculated from 3 samples, Table 1. Ca-richer fluids, a sign of mixing with another fluid. The text swaps the Pingmen and Paiwang ranges relative to Table 1; values here follow the table. | Xu et al. (2018), Origin of ore-forming fluids of the Zn-Pb-(Cu) deposits in the Jinbao m… |
δ66Zn in ‰ (per mil) Values of the same system
Standard : JMC 3-0749L
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.13 ± 0.05 ‰ | 0.01 / 0.2 ‰ | 12 | coarse black stage I sphalerite Mean and standard deviation recalculated from 12 analyses, Table 4. BC-2-7 analysed twice. The text wrongly presents these values as relative to IRMM-3702. Samples from Bengchong (BC), Pingmen (PM), Laodu (LD), Nansun (NS) and Yangjiawan (YJW), the latter outside the Jinbao district. | Zhou & Wen (2021), A magmatic-hydrothermal indium-bearing polymetallic vein mineralizatio… |
| 0.22 ± 0.03 ‰ | 0.2 / 0.28 ‰ | 7 | fine pale stage II sphalerite Mean and standard deviation recalculated from 7 samples, Table 4. δ66Zn rises from stage I to stage II, attributed to Rayleigh distillation in a magmatic-hydrothermal fluid. Samples from Bengchong (BC), Pingmen (PM), Laodu (LD), Nansun (NS) and Yangjiawan (YJW), the latter outside the Jinbao district. | Zhou & Wen (2021), A magmatic-hydrothermal indium-bearing polymetallic vein mineralizatio… |
δ114/110Cd in ‰ (per mil) Values of the same system
Standard : Spex Cd (standard interne de Nancy)
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.01 ± 0.06 ‰ | −0.14 / 0.11 ‰ | 12 | coarse black stage I sphalerite Mean and standard deviation recalculated from 12 analyses, Table 4. BC-2-7 analysed twice. Negative correlation with cadmium content. Samples from Bengchong (BC), Pingmen (PM), Laodu (LD), Nansun (NS) and Yangjiawan (YJW), the latter outside the Jinbao district. | Zhou & Wen (2021), A magmatic-hydrothermal indium-bearing polymetallic vein mineralizatio… |
| 0.08 ± 0.01 ‰ | 0.06 / 0.09 ‰ | 5 | fine pale stage II sphalerite Mean and standard deviation recalculated from 5 samples, Table 4. Samples from Bengchong (BC), Pingmen (PM), Laodu (LD), Nansun (NS) and Yangjiawan (YJW), the latter outside the Jinbao district. | Zhou & Wen (2021), A magmatic-hydrothermal indium-bearing polymetallic vein mineralizatio… |
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Cite this page
IsoFind Atlas (2026). Jinbao district (Bengchong, Nanshen, Pingmen, Paiwang), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/district-de-jinbao-bengchong-nanshen-pingmen-paiwang/ (accessed 2026-10-13).
@misc{isofind2026jinbaodistrictbengchongnanshe,
title = {Jinbao district (Bengchong, Nanshen, Pingmen, Paiwang), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/district-de-jinbao-bengchong-nanshen-pingmen-paiwang/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13