Dayong Ni-Mo horizon (Ganziping, Daping and Sansha, Hunan)
Hunan, Dayong area (Zhangjiajie), China
SEDEXMo, Ni (EGP)
- Type
- Brecciated Ni-Mo-PGE sulphide layer in black shales (Lower Cambrian)
Hunan equivalent of the Tianeshan layer, 400 km to the north-east, a few metres above the Proterozoic and on a thin phosphorite; 35 cm thick at Ganziping, 12.5 cm at Daping, 6.5 cm at Sansha.
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 |
|---|---|---|---|---|
| 9.063 ± 1.501 | 7.751 / 11.375 | 5 | Ni-Mo sulphide layer (whole rock, present-day ratio) Mean and standard deviation recalculated from 5 analyses, 7.751 to 11.375 (GZP 4E 11.375; GZP 5I 7.751; DP 4A14 8.179; SC 1A 9.765; SC 1F 8.246). Published: GZP 4E: 187Os/186Os 94.87(18), Re 10280 ppb, Os 108.9 ppb, 187Re/186Os 9359, [192Os] 19.12 ppb, Pt 190 ppb; GZP 5I: 187Os/186Os 64.64(12), Re 5550 ppb, Os 65.62 ppb, 187Re/186Os 6780, [192Os] 14.51 ppb, Pt 250 ppb; DP 4A14: 187Os/186Os 68.21(12), Re 15030 ppb, Os 176.7 ppb, 187Re/186Os 7009, [192Os] 37.92 ppb, Pt 690 ppb; SC 1A: 187Os/186Os 81.44(16), Re 6720 ppb, Os 65.90 ppb, 187Re/186Os 9253, [192Os] 12.74 ppb, Pt 91 ppb; SC 1F: 187Os/186Os 68.77(12), Re 2961 ppb, Os 32.74 ppb, 187Re/186Os 7485, [192Os] 6.993 ppb, Pt 77 ppb. GZP 4E and SC 1A are more radiogenic and richer in Re than the others; SC 1A and SC 1F plot right of the 560 Ma reference isochron. GZP: Ganziping, DP: Daping, SC: Sansha. | Horan et al. (1994), Rhenium and osmium isotopes in black shales and Ni-Mo-PGE-rich sulfi… |
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Cite this page
IsoFind Atlas (2026). Dayong Ni-Mo horizon (Ganziping, Daping and Sansha, Hunan), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/horizon-ni-mo-de-dayong-ganziping-daping-et-sansha-hunan/ (accessed 2026-10-21).
@misc{isofind2026dayongnimohorizonganzipingdap,
title = {Dayong Ni-Mo horizon (Ganziping, Daping and Sansha, Hunan), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/horizon-ni-mo-de-dayong-ganziping-daping-et-sansha-hunan/},
note = {Accessed 2026-10-21}
}Updated : 2026-10-21