Gaosong (Gejiu district)
Gejiu, Yunnan, China
SkarnsSn (Cu, Pb, Zn)
- Type
- Tin and base-metal skarn, with oxidised zone and gossan
A deposit of the Gejiu tin district, one of the largest in the world, related to Cretaceous granites. Iron becomes heavier as the ore oxidises: primary sulfides are the lightest, gossans the heaviest.
δ56Fe in ‰ (per mil) Values of the same system
Standard : IRMM-014
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.14 ± 0.14 ‰ | −0.33 / 0.1 ‰ | 8 | primary sulfide ore (bulk) Mean and standard deviation of 8 samples. Table 1. The only positive sample is rich in late pyrite. | Cheng et al. (2015), Iron isotope fractionation during supergene weathering process and i… |
| −0.01 ± 0.11 ‰ | −0.23 / 0.12 ‰ | 10 | oxidised ore (bulk) Mean and standard deviation of 10 samples. Table 1. Values increase with the degree of oxidation. | Cheng et al. (2015), Iron isotope fractionation during supergene weathering process and i… |
| 0.12 ± 0.05 ‰ | 0.07 / 0.2 ‰ | 5 | gossan (bulk) Mean and standard deviation of 5 samples. Table 1. | Cheng et al. (2015), Iron isotope fractionation during supergene weathering process and i… |
Deposits of the same type
- Luziyuan China
- Hongshan-Hongniu China
- Yangla China
- Han-Xing China
- Haobugao China
- Dalnegorsk district Pb-Zn deposits Russia
- Dalnegorskoe (boron) Russia
- Dannemora Sweden
Cite this page
IsoFind Atlas (2026). Gaosong (Gejiu district), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/gaosong-district-de-gejiu/ (accessed 2026-10-07).
@misc{isofind2026gaosonggejiudistrictisotopesi,
title = {Gaosong (Gejiu district), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/gaosong-district-de-gejiu/},
note = {Accessed 2026-10-07}
}Updated : 2026-10-07