Bournac
Southern Massif Central (Montagne Noire), France
Other hydrothermalPb-Zn (Sb, As)
- Type
- Sulfide-bearing tectonic breccia
Stibnite-arsenopyrite breccia, same setting as Argenneuves. Approximate location. Indicative coordinates.
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.24 ± 0.01 | 18.24 / 18.25 | 2 | galena Mean and standard deviation recalculated from 2 analyses, Table 2. Population 2, more radiogenic: Hercynian or later mineralisation, linked to granitoids or fluid circulation. | Brevart et al. (1982), Metallogenic provinces and the remobilization process studied by l… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.66 ± 0.01 | 15.66 / 15.67 | 2 | galena Mean and standard deviation recalculated from 2 analyses, Table 2. Population 2, more radiogenic: Hercynian or later mineralisation, linked to granitoids or fluid circulation. | Brevart et al. (1982), Metallogenic provinces and the remobilization process studied by l… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.39 ± 0.02 | 38.38 / 38.41 | 2 | galena Mean and standard deviation recalculated from 2 analyses, Table 2. Population 2, more radiogenic: Hercynian or later mineralisation, linked to granitoids or fluid circulation. | Brevart et al. (1982), Metallogenic provinces and the remobilization process studied by l… |
Deposits of the same type
- Argenneuves France
- Olargues France
- Folat France
- Berlou (Le Priou) France
- La Caunette France
- Bardou France
- Camprafaud France
- Lacabarède France
Cite this page
IsoFind Atlas (2026). Bournac, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/bournac/ (accessed 2026-10-13).
@misc{isofind2026bournacisotopesignatures,
title = {Bournac, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/bournac/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13