Tasmanian osmiridium placers (Adamsfield, Kinsella Gully)
Tasmania, Australia
OtherPGE (Os, Ir)
- Type
- Osmiridium placer derived from ultramafic rocks
Platinum-group mineral placers derived from ultramafic rocks dated at 560 to 600 Ma (C. Brooks, communication quoted by Allègre and Luck, 1980); the table gives 630 Ma.
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 |
|---|---|---|---|---|
| 0.121 ± 0.0002 | 0.1208 / 0.1211 | 2 | placer osmiridium Mean and standard deviation recalculated from 2 analyses, 0.1208 to 0.1211 (Kinsella Gully 0.1211; Adamsfield 0.1208). Published 187Os/186Os: Kinsella Gully 1.006 ± 0.005; Adamsfield 1.004 ± 0.005. Estimated age: 630 Ma. Very similar values between localities, suggesting an almost uniform source. | Allègre & Luck (1980), Osmium isotopes as petrogenetic and geological tracers, Earth and … |
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Cite this page
IsoFind Atlas (2026). Tasmanian osmiridium placers (Adamsfield, Kinsella Gully), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/placers-d-osmiridium-de-tasmanie-adamsfield-kinsella-gully/ (accessed 2026-10-21).
@misc{isofind2026tasmanianosmiridiumplacersada,
title = {Tasmanian osmiridium placers (Adamsfield, Kinsella Gully), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/placers-d-osmiridium-de-tasmanie-adamsfield-kinsella-gully/},
note = {Accessed 2026-10-21}
}Updated : 2026-10-21