Nebida
Iglesiente, south-western Sardinia, Italy
Mississippi Valley TypeZn-Pb
- Type
- Zn-Pb in Cambrian carbonates, oxidised to calamine
Coastal Nebida mines (level +92, Canal San Giuseppe), where the oxidised zone extends below sea level. Supergene smithsonite formed from meteoric waters at about 20 to 35 °C (Boni et al., 2003); light carbon inherited from soil and vegetation. Indicative coordinates.
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 27.56 ± 1.07 ‰ | 26.065 / 28.79 ‰ | 9 | supergene smithsonite Mean and standard deviation recalculated from 9 samples, Table 1. Multiple analyses of one specimen averaged before computation. Types I to V combined. | Boni et al. (2003), The calamine of southwest Sardinia: geology, mineralogy, and stable i… |
| 24.66 ‰ | 1 | calcite associated with calamine (Nebida-Carroccia) One analysis, Table 1. | Boni et al. (2003), The calamine of southwest Sardinia: geology, mineralogy, and stable i… |
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −6.93 ± 3.3 ‰ | −10.37 / −1.78 ‰ | 9 | supergene smithsonite Mean and standard deviation recalculated from 9 samples, Table 1. Multiple analyses of one specimen averaged before computation. Types I to V combined. | Boni et al. (2003), The calamine of southwest Sardinia: geology, mineralogy, and stable i… |
| −9.21 ‰ | 1 | calcite associated with calamine (Nebida-Carroccia) One analysis, Table 1. | Boni et al. (2003), The calamine of southwest Sardinia: geology, mineralogy, and stable i… |
Deposits of the same type
- Mount Agruxiau Italy
- Masua Italy
- Seddas Moddizzis Italy
- Monteponi Italy
- Campo Pisano Italy
- Malfidano Italy
- San Benedetto Italy
- Ain Allegua Tunisie
Cite this page
IsoFind Atlas (2026). Nebida, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/nebida/ (accessed 2026-10-13).
@misc{isofind2026nebidaisotopesignatures,
title = {Nebida, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/nebida/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13