Jabali
About 110 km east of Sana'a, Yémen
Mississippi Valley TypeZn-Pb-Ag
- Type
- MVT with mixed sulfide and non-sulfide ore
Early Cretaceous MVT mineralisation in dolomitised Jurassic carbonates, partly oxidised to smithsonite (30 to 65 °C, mixing of groundwater and warm hydrothermal water) with minor hydrozincite. Indicative coordinates.
δ66Zn in ‰ (per mil) Values of the same system
Standard : JMC 3-0749L
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.32 ± 0.11 ‰ | 0.24 / 0.4 ‰ | 2 | sphalerite Mean and standard deviation recalculated from 2 samples, Table 2. Drillcore J125. | Mondillo et al. (2018), A global assessment of Zn isotope fractionation in secondary Zn m… |
| 0.6 ± 0.22 ‰ | 0.43 / 0.85 ‰ | 3 | smithsonite Mean and standard deviation recalculated from 3 samples, Table 2. The discussion quotes a smithsonite-sphalerite offset of +0.61 ‰, equal to the maximum offset (0.85 - 0.24). | Mondillo et al. (2018), A global assessment of Zn isotope fractionation in secondary Zn m… |
| 0.25 ‰ | 1 | hydrozincite One analysis (JS MON 22B), Table 2. Lighter than smithsonite: late precipitation from a depleted fluid (Rayleigh model, 75 % of zinc already deposited). | Mondillo et al. (2018), A global assessment of Zn isotope fractionation in secondary Zn m… |
Deposits of the same type
- Emarat Iran
- Jebel Ressas Tunisie
- Jebel Azreg Tunisie
- Jebel Trozza Tunisie
- Mecella Tunisie
- Ardovo Slovakia
- Tiba Slovakia
- Sekarna (Saint-Pierre) Tunisie
Cite this page
IsoFind Atlas (2026). Jabali, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/jabali/ (accessed 2026-10-13).
@misc{isofind2026jabaliisotopesignatures,
title = {Jabali, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/jabali/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13