Decazeville coal combustion ash
Riou Mort basin and Lot valley, Aveyron and Lot, France
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The Viviez zinc ore processing plant (Vieille Montagne then Umicore) refined up to 100,000 t of zinc per year (1985) by electrolysis and thermal processing; its tailings, very heavy in zinc, polluted the Riou Mort and then the Lot until extraction stopped in 1987. Ash from combustion of coal from La Découverte open-pit mine, burnt by the plant and a local power station. Indicative coordinates.
δ66Zn in ‰ (per mil) Values of the same system
Standard : JMC 3-0749L
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.72 ‰ | 1 | One analysis, Table 1. Indistinguishable from metallurgical tailings. | Sivry et al. (2008), Zn isotopes as tracers of anthropogenic pollution from Zn-ore smelte… |
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Cite this page
IsoFind Atlas (2026). Decazeville coal combustion ash, isotope signatures. https://www.isofind.tech/isotopes/en/sites/cendres-de-combustion-du-charbon-de-decazeville/ (accessed 2026-10-13).
@misc{isofind2026decazevillecoalcombustionashi,
title = {Decazeville coal combustion ash, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/cendres-de-combustion-du-charbon-de-decazeville/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13