Yangla
North-western Yunnan, Deqin (Jinshajiang suture zone, Sanjiang), China
SkarnsCu (Pb-Zn)
- Type
- Granodiorite-related Cu-Pb-Zn skarn
The largest copper skarn of the Jinshajiang suture zone (130 to 150 Mt at 1.03 % Cu), related to Triassic I-type granodiorites (227 to 238 Ma, molybdenite about 232 Ma). Inclusion fluids are heavy in lithium because retrograde alteration (actinolite, chlorite, epidote) retains 6Li; vapour-liquid phase separation makes brine chlorine heavier and lowers its Cl/Br. Individual data in the article supplement. Indicative coordinates.
δ7Li in ‰ (per mil) Values of the same system
Standard : IRMM-016
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 9.17 / 11.18 ‰ | 3 | fluid inclusion leachates from vein quartz and calcite, Jiangbian section Published range for 3 samples; data in the supplement. | Xu et al. (2025), Lithium isotopes, chlorine isotopes, and Cl/Br ratios geochemistry of o… | |
| 9.28 / 14.23 ‰ | 5 | fluid inclusion leachates from vein quartz and calcite, Linong section Published range for 5 samples ("mainly"); data in the supplement. No difference between weakly and strongly mineralised veins. | Xu et al. (2025), Lithium isotopes, chlorine isotopes, and Cl/Br ratios geochemistry of o… | |
| 5.86 ‰ | 1 | fluid inclusion leachate from a quartz-sulfide vein One analysis quoted in the text, section not stated; high Sr/Li ratio. | Xu et al. (2025), Lithium isotopes, chlorine isotopes, and Cl/Br ratios geochemistry of o… |
δ37Cl in ‰ (per mil) Values of the same system
Standard : ISL 354 (NaCl)
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.19 ‰ | −0.44 / 1.03 ‰ | 8 | vein fluid inclusion leachates, Jiangbian section Published mean and range for 8 samples; molar Cl/Br 342 to 1052 (mean 667). | Xu et al. (2025), Lithium isotopes, chlorine isotopes, and Cl/Br ratios geochemistry of o… |
| 0.84 ‰ | 0.02 / 1.62 ‰ | 12 | vein fluid inclusion leachates, Linong section Published mean and range for 12 samples; molar Cl/Br 46 to 684 (mean 326, n = 17). Negative Cl/Br-δ37Cl correlation, attributed to phase separation. | Xu et al. (2025), Lithium isotopes, chlorine isotopes, and Cl/Br ratios geochemistry of o… |
| 0.51 / 1.09 ‰ | fluid inclusion leachates from quartz of the ore-related granodiorites Published range, number not stated; molar Cl/Br 215 to 549. Close to magmatic fluids (+1.0 to +2.5 ‰). | Xu et al. (2025), Lithium isotopes, chlorine isotopes, and Cl/Br ratios geochemistry of o… |
Deposits of the same type
- Hongshan-Hongniu China
- Luziyuan China
- Gaosong (Gejiu district) China
- Han-Xing China
- Haobugao China
- Dalnegorsk district Pb-Zn deposits Russia
- Dalnegorskoe (boron) Russia
- Dannemora Sweden
Cite this page
IsoFind Atlas (2026). Yangla, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/yangla/ (accessed 2026-10-07).
@misc{isofind2026yanglaisotopesignatures,
title = {Yangla, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/yangla/},
note = {Accessed 2026-10-07}
}Updated : 2026-10-07