Xinchang-Yongjia silver belt (Haoshi, Bamao, Dalingkou, Wubu)
Eastern Zhejiang, Mesozoic volcanic terrain, China
Epithermal depositsAg (Pb-Zn)
- Type
- Meso-epithermal Ag (Pb-Zn) vein deposits in volcanic rocks
North-south belt of more than 30 silver (Pb-Zn) deposits and occurrences in Late Jurassic to Early Cretaceous acid volcanic rocks (110 to 130 Ma). Mineralisation at 70 to 100 Ma, 30 to 40 Myr after volcanism, between 300 and 70 °C, from heated Mesozoic meteoric waters that leached silver, lead, zinc and sulfur from the consolidated volcanic rocks. Total fluid sulfur estimated at about +5 ‰. Isotope values read from the text, without a data table. Indicative coordinates.
δ34S in ‰ (per mil) Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −7 / 7 ‰ | sulfides (pyrite, sphalerite, galena, chalcopyrite) of the main deposits Range read from the text (Fig. 4), excluding one or two values; number of analyses not stated. | Xu et al. (1995), Isotope geochemistry of the Xinchang-Yongjia silver (lead-zinc) ore bel… |
δ18O in ‰ (per mil) Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 7.9 / 14.5 ‰ | gangue quartz Range read from the text; number of analyses not stated. | Xu et al. (1995), Isotope geochemistry of the Xinchang-Yongjia silver (lead-zinc) ore bel… | ||
| −8.3 / 4.1 ‰ | calculated ore fluid (stages I to IIIa) Range read from the text: from +4 ‰ at stage I (230 to 300 °C) to -8 ‰ at substage IIIa (150 to 180 °C), with increasing meteoric water input. | Xu et al. (1995), Isotope geochemistry of the Xinchang-Yongjia silver (lead-zinc) ore bel… |
δD in ‰ (per mil) Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −70 / −55 ‰ | fluid-inclusion water of gangue minerals Range read from the text; number of analyses not stated. | Xu et al. (1995), Isotope geochemistry of the Xinchang-Yongjia silver (lead-zinc) ore bel… |
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Cite this page
IsoFind Atlas (2026). Xinchang-Yongjia silver belt (Haoshi, Bamao, Dalingkou, Wubu), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/ceinture-argentifere-de-xinchang-yongjia-haoshi-bamao-dalingkou-wubu/ (accessed 2026-10-13).
@misc{isofind2026xinchangyongjiasilverbelthaos,
title = {Xinchang-Yongjia silver belt (Haoshi, Bamao, Dalingkou, Wubu), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/ceinture-argentifere-de-xinchang-yongjia-haoshi-bamao-dalingkou-wubu/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13