Fedj Hassene
Northern Tunisia, front of the Numidian nappe (Ghardimaou), Tunisie
Mississippi Valley TypeZn-Pb (Cu, As, Hg)
- Type
- Carbonate-hosted Zn-Pb (Cu-As-Hg) veins
Nappe zone of northern Tunisia: epigenetic vein, karst and stockwork mineralisation in Upper Cretaceous limestones, below the allochthonous Numidian units; homogeneous crustal lead, Upper Miocene model age (Jemmali et al., 2013). Banded sphalerite and galena in veins; fluids at about 130 ± 10 °C; sphalerite systematically lighter than galena, isotopic disequilibrium ascribed to thermochemical or bacterial sulphate reduction. Indicative coordinates, derived from the distance to Ghardimaou (10 km south).
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.68 ± 0.5 ‰ | 15.2 / 16.2 ‰ | 4 | vein galena Mean and standard deviation recalculated from 4 analyses, samples FH-1 to FH-4. | Jemmali et al. (2013), Lead and sulfur isotope constraints on the genesis of the polymeta… |
| 5.05 ± 0.21 ‰ | 4.8 / 5.3 ‰ | 4 | banded vein sphalerite Mean and standard deviation recalculated from 4 analyses, samples FH-5 to FH-8, about 11 ‰ lighter than galena: no isotopic equilibrium. | Jemmali et al. (2013), Lead and sulfur isotope constraints on the genesis of the polymeta… |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.78933 ± 0.00231 | 18.788 / 18.792 | 3 | galena Mean and standard deviation recalculated from 3 analyses, samples FH-1 to FH-3; homogeneous crustal lead; the published model ages, sometimes negative, are not reproduced. | Jemmali et al. (2013), Lead and sulfur isotope constraints on the genesis of the polymeta… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.664 ± 0.00173 | 15.663 / 15.666 | 3 | galena Mean and standard deviation recalculated from 3 analyses, samples FH-1 to FH-3; homogeneous crustal lead; the published model ages, sometimes negative, are not reproduced. | Jemmali et al. (2013), Lead and sulfur isotope constraints on the genesis of the polymeta… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.84967 ± 0.01201 | 38.838 / 38.862 | 3 | galena Mean and standard deviation recalculated from 3 analyses, samples FH-1 to FH-3; homogeneous crustal lead; the published model ages, sometimes negative, are not reproduced. | Jemmali et al. (2013), Lead and sulfur isotope constraints on the genesis of the polymeta… |
Deposits of the same type
- Oued Maden Tunisie
- Bou Grine Tunisie
- Slata Fer Tunisie
- Bou Jaber Tunisie
- Djebba Tunisie
- Ain Allegua Tunisie
- Jebel Ben Amara Tunisie
- Jebel Hallouf Tunisie
Cite this page
IsoFind Atlas (2026). Fedj Hassene, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/fedj-hassene/ (accessed 2026-10-15).
@misc{isofind2026fedjhasseneisotopesignatures,
title = {Fedj Hassene, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/fedj-hassene/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15