Jingshansi (Wuyang)
Wuyang iron district, Henan, China
Banded iron formationsFe
- Type
- Metamorphosed banded iron formation (Algoma type)
Stratiform and lenticular banded magnetite-quartz-pyroxene ore in marbles of the Tieshanmiao Formation (Neoarchean Taihua Group), southern margin of the North China Craton. Volcanic-exhalative silica according to the authors, carbon from marine carbonates reworked by a mixed magmatic and marine fluid. Coordinates of the Wuyang district. Indicative coordinates.
δ30Si in ‰ (per mil) Values of the same system
Standard : NBS 28
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −1.23 ± 0.62 ‰ | −1.9 / −0.4 ‰ | 6 | quartz of quartz-pyroxene-magnetite ore Mean and standard deviation recalculated from 6 samples, Table 2 (Wg-045 to Wg-061, Shangmiao sector). Light silicon attributed to kinetic fractionation during precipitation of exhaled silica; close to the Gongchangling and Qian'an BIFs. | Liu et al. (2015), Carbon, oxygen and silicon isotope composition tracing for the ore-for… |
| 0 ‰ | 0 / 0 ‰ | 2 | quartz of host leptites Mean and standard deviation recalculated from 2 samples, Table 2 (Wg-057, Wg-064). | Liu et al. (2015), Carbon, oxygen and silicon isotope composition tracing for the ore-for… |
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −2.77 ± 1.68 ‰ | −5.2 / −1.4 ‰ | 4 | calcite of magnetite-diopside marble Mean and standard deviation recalculated from 4 samples, Table 1 (Wg-043, 044, 048, 055): magnetite-diopside marble of the ore stage; calculated fluid 0.42 to 8.82 ‰ at 235 °C (homogenisation published elsewhere). | Liu et al. (2015), Carbon, oxygen and silicon isotope composition tracing for the ore-for… |
| 0.23 ± 1.13 ‰ | −1 / 1.6 ‰ | 4 | calcite of host diopside marble Mean and standard deviation recalculated from 4 samples, Table 1 (Wg-059, 060, 065, 066): host diopside marble, marine signature; calculated fluid 7.20 to 10.30 ‰ at 150 °C. The abstract gives -1.0 to 1.6 ‰ for carbon, the text 1.0 to 1.6 ‰: table values. | Liu et al. (2015), Carbon, oxygen and silicon isotope composition tracing for the ore-for… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 13.05 ± 3.69 ‰ | 8.5 / 16.9 ‰ | 4 | calcite of magnetite-diopside marble Mean and standard deviation recalculated from 4 samples, Table 1 (Wg-043, 044, 048, 055): magnetite-diopside marble of the ore stage; calculated fluid 0.42 to 8.82 ‰ at 235 °C (homogenisation published elsewhere). | Liu et al. (2015), Carbon, oxygen and silicon isotope composition tracing for the ore-for… |
| 21.68 ± 1.29 ‰ | 20.3 / 23.4 ‰ | 4 | calcite of host diopside marble Mean and standard deviation recalculated from 4 samples, Table 1 (Wg-059, 060, 065, 066): host diopside marble, marine signature; calculated fluid 7.20 to 10.30 ‰ at 150 °C. The abstract gives -1.0 to 1.6 ‰ for carbon, the text 1.0 to 1.6 ‰: table values. | Liu et al. (2015), Carbon, oxygen and silicon isotope composition tracing for the ore-for… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Jingshansi (Wuyang), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/jingshansi-wuyang/ (accessed 2026-10-13).
@misc{isofind2026jingshansiwuyangisotopesignat,
title = {Jingshansi (Wuyang), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/jingshansi-wuyang/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13