Carboniferous fractured aquifer (aquifer C, Xikuangshan)
Hunan, Lengshuijiang, Xikuangshan district, China
Groundwater
- Type
- Groundwater
Xikuangshan antimony mine: 28 waters sampled in November 2013, including 23 springs of aquifers A, B and C, one mine water and four surface waters; arsenic up to 1274 µg/L in springs and 2545 µg/L in rivers, ascribed mainly to leaching of alkaline arsenic residues from the smelter and interaction with stibnite and silicified limestones. Sulfate (δ34S from -0.7 to +4.7 ‰ except B6) comes from sulfide oxidation, mixed with mine and surface waters; no link between δ34S and arsenic (Wen et al., 2018). Labels and 87Sr/86Sr from Table 1 of the published version. Coordinates not published (map only). Aquifer of the Datang and Yanguan formations (Lower Carboniferous), beyond the lamprophyre dyke and fault No. 75.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.9 ± 1.2 ‰ | −0.9 / 2.5 ‰ | 7 | dissolved sulfate Mean and standard deviation recalculated from 7 analyses, -0.9 to +2.5 (C1 +0.3; C2 +0.1; C3 +1.1; C4 -0.9; C5 +1.8; C6 +2.5; C7 +1.6); C5 the most As-rich (1274 µg/L). | Wen et al. (2018), Coupled S and Sr isotope evidences for elevated arsenic concentrations… |
87Sr/86Sr isotope ratio, no unit Values of the same system
Standard : NIST SRM 987
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.70876 ± 0.00026 | 0.70828 / 0.70906 | 7 | dissolved strontium Mean and standard deviation recalculated from 7 analyses, 0.70828 to 0.70906 (C1 0.70893; C2 0.70828; C3 0.70858; C4 0.70877; C5 0.70906; C6 0.70878; C7 0.70894); the least radiogenic of the three aquifers (Carboniferous limestones). | Wen et al. (2018), Coupled S and Sr isotope evidences for elevated arsenic concentrations… |
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Cite this page
IsoFind Atlas (2026). Carboniferous fractured aquifer (aquifer C, Xikuangshan), isotope signatures. https://www.isofind.tech/isotopes/en/sites/aquifere-fissure-carbonifere-aquifere-c-xikuangshan/ (accessed 2026-10-16).
@misc{isofind2026carboniferousfracturedaquifer,
title = {Carboniferous fractured aquifer (aquifer C, Xikuangshan), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/aquifere-fissure-carbonifere-aquifere-c-xikuangshan/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16