Brake fern rhizosphere soils near the Nanhua mine
Eastern Yunnan, Nanhua mine, China
Soils
- Type
- Soil
Surroundings of the Nanhua arsenic-thallium mine (eastern Yunnan), where As2O3 was produced for over 40 years until 2000. Three mixing end-members: lorandite ore (-0.10), host rock (+1.85) and roasting tailings (+5.35); mine wastes supply on average 78 % of Tl in surface soils, over 90 % in the profile and almost all in rhizosphere soils; values too heavy for mixing (surface soil 6, profile 2 at 20-40 cm) are ascribed to Tl oxidation and fixation on Fe-Mn oxides (abundant hematite). (Wei et al., 2026). Coordinates not published (map only); individual values from Table S2; profile levels numbered without published depths, except level 2 (20-40 cm).
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.08 ± 0.54 ε | 1 | brake fern rhizosphere soil 1 Published value; ± 0.54 (2 SD). | Wei et al. (2026), Tracing thallium pollution in arsenic mining/smelting areas using high… | |
| 3.6 ± 0.61 ε | 1 | brake fern rhizosphere soil 2 Published value; ± 0.61 (2 SD). | Wei et al. (2026), Tracing thallium pollution in arsenic mining/smelting areas using high… | |
| 1.68 ± 0.09 ε | 1 | brake fern rhizosphere soil 3 Published value; ± 0.09 (2 SD). | Wei et al. (2026), Tracing thallium pollution in arsenic mining/smelting areas using high… | |
| 2.29 ± 0.33 ε | 1 | brake fern rhizosphere soil 4 Published value; ± 0.33 (2 SD). | Wei et al. (2026), Tracing thallium pollution in arsenic mining/smelting areas using high… |
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Cite this page
IsoFind Atlas (2026). Brake fern rhizosphere soils near the Nanhua mine, isotope signatures. https://www.isofind.tech/isotopes/en/sites/sols-rhizospheriques-de-fougere-aigle-pres-de-la-mine-de-nanhua/ (accessed 2026-10-16).
@misc{isofind2026brakefernrhizospheresoilsnear,
title = {Brake fern rhizosphere soils near the Nanhua mine, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/sols-rhizospheriques-de-fougere-aigle-pres-de-la-mine-de-nanhua/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16