Nevyansk (Ural osmiridium placers)
Middle Urals, Russia
OtherPGE (Os, Ir)
- Type
- Osmiridium placer derived from ultramafic rocks
Osmiridium placers linked to dunites of the "Hercynian" ophiolite belts of the Urals; age of 240 Ma used by Allègre and Luck (1980), 300 to 400 Ma expected according to the text.
187Os/188Os isotope ratio, no unit Values of the same system
Standard : Rapport absolu, sans standard de référence
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.1247 | 1 | placer osmiridium Single analysis. Published 187Os/186Os: Nevyansk 1.036 ± 0.004. Estimated age: 240 Ma. | Allègre & Luck (1980), Osmium isotopes as petrogenetic and geological tracers, Earth and … |
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Cite this page
IsoFind Atlas (2026). Nevyansk (Ural osmiridium placers), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/nevyansk-placers-d-osmiridium-de-l-oural/ (accessed 2026-10-21).
@misc{isofind2026nevyanskuralosmiridiumplacers,
title = {Nevyansk (Ural osmiridium placers), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/nevyansk-placers-d-osmiridium-de-l-oural/},
note = {Accessed 2026-10-21}
}Updated : 2026-10-21