Stolbny occurrence
North Baikal region, Akitkan uranium district, Russia
UraniumU
- Type
- Albitisation-related pitchblende-selenide uranium
Occurrence 18 km south-southwest of the Bezymyanny deposit, in Palaeoproterozoic volcano-sedimentary rocks along the Akitkan palaeovolcano; late quartz-hematite-hydromica argillic alteration remobilised uranium as pitchblende 2 at 384 ± 8 Ma (Middle Devonian). U-Pb and Pb-Pb ages by micro-sampling, isotope dilution and TIMS (Golubev et al., 2008). Coordinates not given.
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 23.21 | 1 | lead sulphoselenide (about 99.5 %, pitchblende about 0.5 %) Single analysis; micro-sample MPK-135-4, 238U/204Pb of 0.32: composition close to the common lead of the sulphoselenide, the other micro-samples mixed with pitchblende being highly radiogenic (Table 1). | Golubev et al. (2008), Deposition and remobilization of uranium in the North Baikal regio… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 16.249 | 1 | lead sulphoselenide (about 99.5 %, pitchblende about 0.5 %) Single analysis; micro-sample MPK-135-4, 238U/204Pb of 0.32: composition close to the common lead of the sulphoselenide, the other micro-samples mixed with pitchblende being highly radiogenic (Table 1). | Golubev et al. (2008), Deposition and remobilization of uranium in the North Baikal regio… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 40.992 | 1 | lead sulphoselenide (about 99.5 %, pitchblende about 0.5 %) Single analysis; micro-sample MPK-135-4, 238U/204Pb of 0.32: composition close to the common lead of the sulphoselenide, the other micro-samples mixed with pitchblende being highly radiogenic (Table 1). | Golubev et al. (2008), Deposition and remobilization of uranium in the North Baikal regio… |
Deposits of the same type
- Athabasca basin (unconformity uranium province) Canada
- Shea Creek (Athabasca) Canada
- Tim Mersoï basin (Arlit, Akouta, Imouraren) Niger
- Inkai (Chu-Sarysu basin) Kazakhstan
- Tulukuevskoye Russia
- Ty Gallen France
- Rophin France
- Key Lake (Deilmann and Gaertner) Canada
Cite this page
IsoFind Atlas (2026). Stolbny occurrence, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/indice-de-stolbny/ (accessed 2026-10-15).
@misc{isofind2026stolbnyoccurrenceisotopesigna,
title = {Stolbny occurrence, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/indice-de-stolbny/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15