Bou Jaber
North-western Tunisia, about 30 km west of Tajerouine (Salt Diapir Province), Tunisie
Mississippi Valley TypeBa-F-Pb-Zn
- Type
- Mississippi Valley-type (MVT) related to a salt diapir
Barite, fluorite, galena and sphalerite deposit on the edge of the Triassic Bou Jaber salt diapir, in dissolution-collapse breccias of Late Aptian platform carbonates. Three events: sulfides (about 125 °C), barite (about 115 °C) then fluorite (about 152 °C), from brines derived from the dissolution of Triassic evaporites. Reduced sulfur comes from thermochemical reduction of Triassic sulfate, and the radiogenic strontium of barite points to a feldspar-rich reservoir. Indicative coordinates.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 9.32 ± 0.38 ‰ | 8.4 / 9.9 ‰ | 17 | sphalerite Mean and standard deviation recalculated from 17 samples, Table 4. The text reports 18 sphalerites and 8.4 to 9.8 ‰; the table lists 17, up to 9.9 ‰. No difference between orebodies. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 5.74 ± 1.49 ‰ | 1.1 / 8.2 ‰ | 38 | galena from mine ore (levels -63, -69 and -95 m) Mean and standard deviation recalculated from 38 samples, Table 4. Thirteen sphalerite-galena pairs give 119 to 200 °C (Ohmoto and Rye, 1979), above fluid inclusion temperatures. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 6.58 ± 2.35 ‰ | 3.2 / 9.6 ‰ | 5 | epigenetic galena disseminated in Aptian limestone (open pit) Mean and standard deviation recalculated from 5 samples, Table 4. Analyses by Salmi-Laouar (2004, 2007) included in the article. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 15.67 ± 0.5 ‰ | 15.2 / 16.2 ‰ | 3 | pyrite disseminated in Aptian limestone (open pit) Mean and standard deviation recalculated from 3 samples, Table 4. Analyses by Salmi-Laouar (2004, 2007) included in the article. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 21.91 ± 1.32 ‰ | 18.5 / 24.5 ‰ | 45 | barite Mean and standard deviation recalculated from 45 samples, Table 4. Sample 61/21DGn2, named like a galena, is listed as barite. The text reports 18.4 to 24.5 ‰; table minimum 18.5 ‰. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 15.08 ± 0.95 ‰ | 13.4 / 17.1 ‰ | 22 | Triassic gypsum from the province diapirs (Ouenza, Mesloula, Bou Jaber, Hameimat, Fedj el Adoum) Mean and standard deviation recalculated from 22 samples, Table 4. Mostly analyses by Salmi-Laouar (2004, 2007). The text reports 13.4 to 17.0 ‰ (n = 12). Triassic marine sulfate values, the sulfur source for sulfides and barite. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 21.85 ± 1.03 ‰ | 19.6 / 23.4 ‰ | 14 | barite (sulfate oxygen) Mean and standard deviation recalculated from 14 samples, Table 4. The text reports 19.6 to 23.5 ‰ (n = 13). Heavier than any marine sulfate: exchange with water or reservoir effect. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 14.83 ± 1.7 ‰ | 12.9 / 16.1 ‰ | 3 | Triassic gypsum from Fedj el Adoum (sulfate oxygen) Mean and standard deviation recalculated from 3 samples, Table 4. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 27.84 ± 1.3 ‰ | 26.2 / 30.1 ‰ | 13 | Late Aptian host limestone (barren and mineralised) Mean and standard deviation recalculated from 13 samples, Table 3. δ18O decreases from limestone to hydrothermal carbonates through exchange with a hotter fluid. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 26.63 ± 0.44 ‰ | 25.9 / 27 ‰ | 6 | ankerite 1 and 2 (before and after barite) Mean and standard deviation recalculated from 6 samples, Table 3. δ18O decreases from limestone to hydrothermal carbonates through exchange with a hotter fluid. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 21.23 ± 1.65 ‰ | 19.6 / 22.9 ‰ | 3 | ankerite 3 (geodes after fluorite) Mean and standard deviation recalculated from 3 samples, Table 3. δ18O decreases from limestone to hydrothermal carbonates through exchange with a hotter fluid. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 21.56 ± 1.72 ‰ | 18.8 / 23.1 ‰ | 5 | calcite 1 (post-ore) Mean and standard deviation recalculated from 5 samples, Table 3. δ18O decreases from limestone to hydrothermal carbonates through exchange with a hotter fluid. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 26.23 ± 0.85 ‰ | 24.8 / 27.4 ‰ | 11 | calcite 2 (post-ore) Mean and standard deviation recalculated from 11 samples, Table 3. δ18O decreases from limestone to hydrothermal carbonates through exchange with a hotter fluid. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 25.09 ‰ | 1 | concretionary smithsonite from the oxidised zone One analysis, Table 2. Supergene smithsonite. | Garnit et al. (2018), C-O stable isotopes geochemistry of Tunisian nonsulfide zinc deposi… | |
| 12.09 ‰ | 1 | cerussite crystals on a galena vein One analysis, Table 2. Very light oxygen: partly deposited from thermal waters. | Garnit et al. (2018), C-O stable isotopes geochemistry of Tunisian nonsulfide zinc deposi… |
87Sr/86Sr isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.710269 ± 0.001 | 0.70821 / 0.711408 | 8 | barite (early, second generation and late) Mean and standard deviation recalculated from 8 samples, Table 5. Sample 6960 appears twice (second generation and late), counted once. 87Sr increases from early barite (0.70821) to late barite (up to 0.71141). | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 0.708125 | 1 | Triassic gypsum from the Bou Jaber diapir One analysis, Table 5. The text refers to anhydrite at 0.70800, close to Triassic seawater (0.7073 to 0.7080). | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.731 ± 0.027 | 18.699 / 18.786 | 16 | galena Mean and standard deviation recalculated from 16 samples, Table 6. The text reports 18.697 to 18.786. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.677 ± 0.035 | 15.643 / 15.762 | 16 | galena Mean and standard deviation recalculated from 16 samples, Table 6. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.838 ± 0.105 | 38.736 / 39.1 | 16 | galena Mean and standard deviation recalculated from 16 samples, Table 6. The text reports 38.7057 to 39.228 (mean 38.842), inconsistent with the table. Homogeneous crustal lead, leached from basement or feldspathic sandstones. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 2.05 ± 1.88 ‰ | −2 / 3.9 ‰ | 13 | Late Aptian host limestone (barren and mineralised) Mean and standard deviation recalculated from 13 samples, Table 3. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 2.88 ± 0.44 ‰ | 2.4 / 3.6 ‰ | 6 | ankerite 1 and 2 (before and after barite) Mean and standard deviation recalculated from 6 samples, Table 3. The text gives 2.4 to 3.6 ‰ for ankerite 2 δ13C (2.4 to 3.0 in the table). | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 0.47 ± 0.96 ‰ | −0.4 / 1.5 ‰ | 3 | ankerite 3 (geodes after fluorite) Mean and standard deviation recalculated from 3 samples, Table 3. The text gives -0.5 ‰ as δ13C minimum (-0.4 in the table). | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 2.56 ± 1.18 ‰ | 1.3 / 3.8 ‰ | 5 | calcite 1 (post-ore) Mean and standard deviation recalculated from 5 samples, Table 3. Two analyses (C18015, C18128) by Salmi-Laouar (2004, 2007). | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| 3.6 ± 0.95 ‰ | 2.6 / 6.2 ‰ | 11 | calcite 2 (post-ore) Mean and standard deviation recalculated from 11 samples, Table 3. Three analyses (C18028, C1830, C18020) by Salmi-Laouar (2004, 2007). The text reports 18 calcites, the table 16. | Bouhlel et al. (2016), A salt diapir-related Mississippi Valley-type deposit: the Bou Jab… |
| −2.87 ‰ | 1 | concretionary smithsonite from the oxidised zone One analysis, Table 2. Supergene smithsonite. | Garnit et al. (2018), C-O stable isotopes geochemistry of Tunisian nonsulfide zinc deposi… | |
| −5.62 ‰ | 1 | cerussite crystals on a galena vein One analysis, Table 2. Very light oxygen: partly deposited from thermal waters. | Garnit et al. (2018), C-O stable isotopes geochemistry of Tunisian nonsulfide zinc deposi… |
Deposits of the same type
- Slata Fer Tunisie
- Bou Grine Tunisie
- Sekarna (Saint-Pierre) Tunisie
- Djebba Tunisie
- Fedj el Adoum Tunisie
- Ain Allegua Tunisie
- Jebel Trozza Tunisie
- Jebel Ben Amara Tunisie
Cite this page
IsoFind Atlas (2026). Bou Jaber, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/bou-jaber/ (accessed 2026-10-13).
@misc{isofind2026boujaberisotopesignatures,
title = {Bou Jaber, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/bou-jaber/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13