Aozigang
Western Hubei, eastern flank of the Huangling anticline (Yichang), China
Mississippi Valley TypeZn (Ge, Ga)
- Type
- Ge- and Ga-bearing carbonate-hosted Zn (Mississippi Valley type)
Deposit of more than 10 Mt zinc in dolostones of the Dengying Formation (Ediacaran), western Hunan-Hubei metallogenic region of the Yangtze Block. Three sphalerites: green Sp(a) in dolomite breccias (Ag- and Fe-rich), light brown Sp(b) with bitumen, galena and pyrite (Cu-, Ga- and Ge-rich), orange Sp(c) cemented by smithsonite and white dolomite. Sulphur from marine sulphate thermochemically reduced with the help of organic matter (Bai et al., 2024). Coordinates not given.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 26.69 ± 1.52 ‰ | 22.5 / 29.3 ‰ | 23 | green Sp(a) sphalerite of stage I (dolomite breccias) Mean and standard deviation recalculated from 23 analyses, in situ spots; sulphur from reduced Ediacaran marine sulphate. | Bai et al. (2024), Germanium and gallium enrichment and ore genesis of the Aozigang zinc … |
| 27.61 ± 1.18 ‰ | 25.6 / 29.4 ‰ | 13 | light brown Sp(b) sphalerite of stage II (with bitumen) Mean and standard deviation recalculated from 13 analyses, in situ spots; sulphur from reduced Ediacaran marine sulphate. | Bai et al. (2024), Germanium and gallium enrichment and ore genesis of the Aozigang zinc … |
| 26.72 ± 0.91 ‰ | 25.3 / 28.4 ‰ | 14 | orange Sp(c) sphalerite of stage III (with smithsonite) Mean and standard deviation recalculated from 14 analyses, in situ spots; sulphur from reduced Ediacaran marine sulphate. | Bai et al. (2024), Germanium and gallium enrichment and ore genesis of the Aozigang zinc … |
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Cite this page
IsoFind Atlas (2026). Aozigang, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/aozigang/ (accessed 2026-10-15).
@misc{isofind2026aozigangisotopesignatures,
title = {Aozigang, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/aozigang/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15