Peisey-Nancroix
Savoie, Ponturin valley (Tarentaise), France
Other hydrothermalPb, Ag
- Type
- Argentiferous galena and tetrahedrite veins (Alpine orogenic Pb-Ag)
Pb-Ag mine at 1550 m, worked from 1734 to 1866 (21,500 t Pb and 52 t Ag), with on-site roasting and smelting from 1745 to 1824; ore formed during thrusting of the Internal over the External Briançonnais; silver carried by tetrahedrite inclusions in galena. Waste heaps still rich (up to 7.1 % Pb, 137 µg/g Sb). Ore with heterogeneous δ123Sb (-0.28 to +0.10 ‰) and very homogeneous 206Pb/207Pb (1.172-1.173), unlike the slags, heavier by 0.6 to 1 ‰ in Sb (Guillevic et al., 2024). Indicative coordinates (village).
δ123Sb in ‰ (per mil) Values of the same system
Standard : SPEX CertiPrep, lot 24-175SBX
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.11 ± 0.17 ‰ | −0.28 / 0.1 ‰ | 4 | ore-bearing waste rocks (galena and tetrahedrite) Mean and standard deviation recalculated from 4 analyses, -0.28 to +0.10 (ORE-1 +0.10; ORE-2 -0.21; ORE-3* -0.28; ORE-4* -0.06); 2 SD of 0.01 to 0.07 ‰ per sample; 2.9 to 7.9 % Pb and 54 to 561 µg/g Sb; heterogeneous, unlike the slags (+0.62 to +0.78 ‰). | Guillevic et al. (2024), Multi-isotope (Pb, Sb) approach to trace metallic contaminant so… |
206Pb/207Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 1.172 ± 0.001 | 1.172 / 1.173 | 4 | ore-bearing waste rocks (galena and tetrahedrite) Mean and standard deviation recalculated from 4 analyses, 1.172 to 1.173 (ORE-1 1.172; ORE-2 1.172; ORE-3* 1.173; ORE-4* 1.173); ± 0.004 (HR-ICP-MS) or below 0.001 (MC-ICP-MS, asterisk); signature identical to slags and stack residues. | Guillevic et al. (2024), Multi-isotope (Pb, Sb) approach to trace metallic contaminant so… |
208Pb/206Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 2.094 ± 0.001 | 2.093 / 2.095 | 4 | ore-bearing waste rocks (galena and tetrahedrite) Mean and standard deviation recalculated from 4 analyses, 2.093 to 2.095 (ORE-1 2.095; ORE-2 2.095; ORE-3* 2.093; ORE-4* 2.094); ± 0.005 (HR-ICP-MS) or below 0.001 (MC-ICP-MS, asterisk). | Guillevic et al. (2024), Multi-isotope (Pb, Sb) approach to trace metallic contaminant so… |
Deposits of the same type
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- Nozières France
- Duadello Italy
- Valle delle Volte Italy
- Villemagne France
Cite this page
IsoFind Atlas (2026). Peisey-Nancroix, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/peisey-nancroix/ (accessed 2026-10-16).
@misc{isofind2026peiseynancroixisotopesignatur,
title = {Peisey-Nancroix, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/peisey-nancroix/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16