Rosh Pinah flotation tailings dam
Karas, Rosh Pinah, Namibia
Mine tailings and waste rock
- Type
- Mine tailings and waste rock
Dam of about 60 ha and over 25 m high, 1.5 km south of the flotation plant, the main point source of Tl: its wind-eroded surface feeds nearby soils despite stabilising plantations. Tailings at 13.0 and 26.5 mg/kg Tl, mean ε205Tl of +6.2, dominant Tl(I) (XANES), bound to sulphides and micas; FW2 grain-size fractions range from +3.60 to +14.6, the heaviest unexplained since no Tl(III) was detected; fraction mass balance (30.8 mg/kg, +6.7) consistent with the bulk tailings (Grösslová et al., 2018). Indicative coordinates, derived from profile P1 located 0.1 km north-west of the dam.
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 3.6 ± 0.7 ε | 1 | below 0.05 mm fraction of tailings FW2 Single analysis; 48.9 mg/kg Tl; same value as the contaminated surface soils. | Grösslová et al. (2018), Thallium contamination of desert soil in Namibia: Chemical, mine… | |
| 14.6 ± 0.7 ε | 1 | 0.05 to 0.25 mm fraction of tailings FW2 Single analysis; 23.5 mg/kg Tl; unexplained very heavy value, no Tl(III) detected. | Grösslová et al. (2018), Thallium contamination of desert soil in Namibia: Chemical, mine… | |
| 4.76 ± 0.7 ε | 1 | above 0.25 mm fraction of tailings FW2 Single analysis; 20.9 mg/kg Tl. | Grösslová et al. (2018), Thallium contamination of desert soil in Namibia: Chemical, mine… |
Deposits of the same type
- Niquelândia ferronickel plant (Codemin) Brazil
- Barro Alto ferronickel plant Brazil
- Hourcade metallurgical site slags France
- Viviez plant metallurgical tailings (Dunet and Igue de Mas heaps) France
- Bolesław zinc smelter (Bukowno) Poland
- Olkusz flotation tailings Poland
- Turów lignite power plant (ashes and coal pyrite) Poland
- Vinto smelter slag Bolivia
Cite this page
IsoFind Atlas (2026). Rosh Pinah flotation tailings dam, isotope signatures. https://www.isofind.tech/isotopes/en/sites/barrage-de-residus-de-flottation-de-rosh-pinah/ (accessed 2026-10-15).
@misc{isofind2026roshpinahflotationtailingsdam,
title = {Rosh Pinah flotation tailings dam, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/barrage-de-residus-de-flottation-de-rosh-pinah/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15