Technosols on Allchar mine waste rock
Kožuf Mountains, Allchar deposit, North Macedonia
Soils
- Type
- Soil
Five Technosol profiles (May 2022) on Allchar waste rock, clay-poor (7 % at most), neutral to slightly alkaline, with 492 mg/kg to 18.1 g/kg Tl and subsurface Tl peaks in four profiles (particle migration). Profiles P1 and P2 on As-Tl mineralisation (lorandite, rebulite, raguinite in realgar and orpiment; Tl taken up in dorallcharite, Tl-Me arsenates and Mn oxides up to 6.7 at.% Tl), P3 to P5 on Sb mineralisation. ε205Tl inherited from the primary ore, not from soil fractionation; linear trend between 1/Tl and ε205Tl, mixing of a main geogenic pool (-1 to 0) with two minor pools (Vaněk et al., 2024). Published GPS coordinates of profile P1 (826 m); P2 at 41.15814° N, 21.94383° E, P3 at 41.14850° N, 21.95342° E, P4 at 41.14864° N, 21.95319° E, P5 at 41.14877° N, 21.95265° E, reference soil at 41.16006° N, 21.93422° E (supplement, Figure S1).
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.12 ± 1.1 ε | −1.628 / 0.995 ε | 4 | Technosol of profile P1 (0 to 110 cm, As-Tl mineralisation) Mean and standard deviation recalculated from 4 analyses, layers 0-10, 30-40, 70-80 and 100-110 cm, 492 to 11,400 mg/kg Tl; lorandite and realgar, dorallcharite in hydrous ferric oxides, Tl-Me arsenates and Tl-bearing Mn oxides; the surface layer departs from the 1/Tl trend. ± 0.7 ε (2σ) on each value. | Vaněk et al. (2024), Thallium in Technosols from Allchar (North Macedonia): Isotopic and … |
| −0.56 ± 0.42 ε | −0.919 / 0.039 ε | 4 | Technosol of profile P2 (0 to 90 cm, As-Tl mineralisation) Mean and standard deviation recalculated from 4 analyses, layers 20-30, 30-40, 70-80 and 80-90 cm, 4860 to 18,100 mg/kg Tl; weathered lorandite, rebulite and raguinite in orpiment, Tl-bearing jarosite to dorallcharite; variation of about 1 ε. ± 0.7 ε (2σ) on each value. | Vaněk et al. (2024), Thallium in Technosols from Allchar (North Macedonia): Isotopic and … |
| 1.81 ± 1.89 ε | −0.339 / 3.181 ε | 3 | Technosol of profile P3 (0 to 90 cm, Sb mineralisation) Mean and standard deviation recalculated from 3 analyses, layers 20-30, 50-60 and 60-70 cm, 523 to 2940 mg/kg Tl; largest variation of the study (+3.2 in Tl-poor layers); strongly weathered Tl-Hg sulfosalts, Tl-bearing jarosite and K-bearing dorallcharite. ± 0.7 ε (2σ) on each value. | Vaněk et al. (2024), Thallium in Technosols from Allchar (North Macedonia): Isotopic and … |
| −0.04 ± 0.84 ε | −0.589 / 0.924 ε | 3 | Technosol of profile P4 (0 to 50 cm, Sb mineralisation) Mean and standard deviation recalculated from 3 analyses, layers 0-10, 10-20 and 40-50 cm, 1560 to 3040 mg/kg Tl. ± 0.7 ε (2σ) on each value. | Vaněk et al. (2024), Thallium in Technosols from Allchar (North Macedonia): Isotopic and … |
| −0.3 ± 0.23 ε | −0.572 / −0.036 ε | 4 | Technosol of profile P5 (0 to 70 cm, Sb mineralisation) Mean and standard deviation recalculated from 4 analyses, layers 0-10, 40-50, 50-60 and 60-70 cm, 1760 to 4660 mg/kg Tl; variation below analytical error. ± 0.7 ε (2σ) on each value. | Vaněk et al. (2024), Thallium in Technosols from Allchar (North Macedonia): Isotopic and … |
| 0.505 ± 0.7 ε | 1 | uncontaminated natural reference soil (20 to 30 cm, B-C horizon) Single analysis; 17.0 mg/kg Tl, already anomalous geochemical background of the Allchar area. | Vaněk et al. (2024), Thallium in Technosols from Allchar (North Macedonia): Isotopic and … |
Deposits of the same type
- Wolbrom fen Poland
- Black Triangle forest and meadow soils (southeast of Turów) République tchèque
- Lot riverbank soils upstream of the Riou Mort confluence France
- Riou Mort basin soils around the Viviez plant France
- Lot riverbank soils downstream of the Riou Mort confluence France
- Wetland downstream of the Ty Gallen mine France
- Pasvik valley and Sør-Varanger (Nikel and Zapolyarny fallout) Norway
- Barren ferruginous crust of the Perkoa area Burkina Faso
Cite this page
IsoFind Atlas (2026). Technosols on Allchar mine waste rock, isotope signatures. https://www.isofind.tech/isotopes/en/sites/technosols-sur-steriles-de-la-mine-d-allchar/ (accessed 2026-10-15).
@misc{isofind2026technosolsonallcharminewaster,
title = {Technosols on Allchar mine waste rock, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/technosols-sur-steriles-de-la-mine-d-allchar/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15