Dunde
Eastern Awulale metallogenic belt, western Tianshan, Xinjiang, China
OtherFe-Zn
- Type
- Submarine volcanic-hosted iron oxide with skarn (SVIO type)
Stratiform and lenticular magnetite bodies in Upper Carboniferous basaltic tuffs and andesites (Dahalajunshan Formation), reserves of 185 Mt of iron ore at 35.06 % and 1.49 Mt of zinc ore at 1.26 %. Skarn and ore calcite formed by mixing of highly saline magmatic fluids, seawater and meteoric water; strontium between volcanic host rocks and limestones. Indicative coordinates. Position read on the location map of Yan et al. (2018).
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.24 ± 0.13 ‰ | 0.07 / 0.385 ‰ | 6 | skarn calcite (C1) Mean and standard deviation recalculated from 6 samples, Table 2. Duplicates averaged per sample before computation. | Yan et al. (2018), Ore-fluid geochemistry and metallogeny of the Dunde iron-zinc deposit … |
| 0.65 ± 0.21 ‰ | 0.21 / 0.86 ‰ | 12 | magnetite ore calcite (C2) Mean and standard deviation recalculated from 12 samples, Table 2. | Yan et al. (2018), Ore-fluid geochemistry and metallogeny of the Dunde iron-zinc deposit … |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 10.67 ± 0.77 ‰ | 9.645 / 11.695 ‰ | 6 | skarn calcite (C1) Mean and standard deviation recalculated from 6 samples, Table 2. Duplicates averaged per sample before computation. | Yan et al. (2018), Ore-fluid geochemistry and metallogeny of the Dunde iron-zinc deposit … |
| 14.22 ± 0.53 ‰ | 13.55 / 15.22 ‰ | 12 | magnetite ore calcite (C2) Mean and standard deviation recalculated from 12 samples, Table 2. | Yan et al. (2018), Ore-fluid geochemistry and metallogeny of the Dunde iron-zinc deposit … |
| 0.67 ± 0.77 ‰ | −0.355 / 1.695 ‰ | 6 | calculated fluid in equilibrium with skarn calcite (190 °C) Mean and standard deviation recalculated from 6 samples, Table 2. Duplicates averaged per sample before computation. | Yan et al. (2018), Ore-fluid geochemistry and metallogeny of the Dunde iron-zinc deposit … |
| 2.85 ± 0.55 ‰ | 2.15 / 3.82 ‰ | 11 | calculated fluid in equilibrium with ore calcite (249 °C) Mean and standard deviation recalculated from 11 samples, Table 2. 11DD-5 excluded: 5.46 ‰ published, inconsistent with its calcite (13.96 ‰, like 11DD-4 which gives 2.56 ‰). | Yan et al. (2018), Ore-fluid geochemistry and metallogeny of the Dunde iron-zinc deposit … |
87Sr/86Sr isotope ratio, no unit Values of the same system
Standard : NIST SRM 987
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.707427 ± 0.000248 | 0.707198 / 0.70779 | 6 | skarn calcite (C1) Mean and standard deviation recalculated from 6 samples, Table 3. Between volcanic host rocks (0.7056 to 0.7066 at 300 Ma) and limestones or seawater (0.7075 to 0.7089). | Yan et al. (2018), Ore-fluid geochemistry and metallogeny of the Dunde iron-zinc deposit … |
| 0.707221 ± 0.000079 | 0.707148 / 0.707345 | 5 | magnetite ore calcite (C2) Mean and standard deviation recalculated from 5 samples, Table 3. Between volcanic host rocks (0.7056 to 0.7066 at 300 Ma) and limestones or seawater (0.7075 to 0.7089). | Yan et al. (2018), Ore-fluid geochemistry and metallogeny of the Dunde iron-zinc deposit … |
Deposits of the same type
- Huoshaoyun China
- Dezong Mahai (Balun Mahai basin clay-type lithium) China
- Lithium-rich salt lakes of the Qaidam Basin (Dongtai, Xitai, Yiliping, Qarhan) China
- Zankan China
- Anning (carbonate-hosted clay-type lithium) China
- Datangpo-type manganese (Gaolou, Minle, Zhenxing) China
- Deep lithium-bearing brines of the Jiangling Basin China
- Angouran Iran
Cite this page
IsoFind Atlas (2026). Dunde, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/dunde/ (accessed 2026-10-13).
@misc{isofind2026dundeisotopesignatures,
title = {Dunde, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/dunde/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13