Delyuvial'noe (Delyuvial'nyi)
Sakha (Yakutia), Adychanskii ore region (Adycha-Taryn zone), Russia
Orogenic goldAu
- Type
- Impregnation-vein gold in sedimentary rocks (metasomatic)
Adychanskii gold region, in the northern Verkhoyansk-Kolyma gold province: Upper Triassic argillites and siltstones sliced by thrusts, Early Cretaceous S-type granitoids; Delyuvial'noe, Lazovskoe and Sentachan ore fields. Aristov et al. (2017): two fluids of similar temperature and salinity, generated by metagenesis and mobilised during collision (quartz-A at 290-340 °C and 1550 bar, near 6 km; quartz-B, -AB and -C at 250-380 °C and 350-1250 bar, from 3.5 to 1.5 km). Impregnation-vein occurrence of the Delyuvial'noe field (167 t Au at 2 ppm according to OAO Yangeologiya, 2005-2008), grey fine-grained quartz (quartz-B) without carbonate or stibnite formed by metasomatic replacement; fluid at 280-380 °C, 6.5 ± 1 wt% NaCl equiv. and 830-930 bar, N2 and CH4 dominant. Galena R-30: δ34S +2.0 ‰, 206Pb/204Pb 18.245, model age 120 Ma. Coordinates not published (schematic map only, frame 136°40'-137°20' E, 66°20'-66°40' N).
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 2 ‰ | 1 | galena Single analysis (R-30). Fluid H2S estimated at +4.0 ‰ at 300 °C (isotope thermometry and inclusions). | Aristov et al. (2017), Sources of fluids and material for gold and antimony mineralizatio… |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.245 | 1 | galena Single analysis (R-30). Model age of 120 Ma (model U/Pb and Th/U in Table 1). The points plot on a secondary isochron of slope 0.158 (lead source near 2380-2350 Ma). | Aristov et al. (2017), Sources of fluids and material for gold and antimony mineralizatio… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.521 | 1 | galena Single analysis (R-30). Model age of 120 Ma (model U/Pb and Th/U in Table 1). The points plot on a secondary isochron of slope 0.158 (lead source near 2380-2350 Ma). | Aristov et al. (2017), Sources of fluids and material for gold and antimony mineralizatio… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.152 | 1 | galena Single analysis (R-30). Model age of 120 Ma (model U/Pb and Th/U in Table 1). The points plot on a secondary isochron of slope 0.158 (lead source near 2380-2350 Ma). | Aristov et al. (2017), Sources of fluids and material for gold and antimony mineralizatio… |
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Cite this page
IsoFind Atlas (2026). Delyuvial'noe (Delyuvial'nyi), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/delyuvial-noe-delyuvial-nyi/ (accessed 2026-10-19).
@misc{isofind2026delyuvialnoedelyuvialnyiisoto,
title = {Delyuvial'noe (Delyuvial'nyi), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/delyuvial-noe-delyuvial-nyi/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19