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187Os/188Os of Epithermal deposits: published values

isotope ratio, no unit

Epithermal deposits. 9 published values for 5 deposits or sites. Standards, minerals and sources for every value.

DepositsValueRangenMineral or matrixSource
Cerro Vanguardia
Argentina
0.258 ± 0.0090.246 / 0.2738pyrite from gold veins, initial ratio at 147 MaTassara et al. (2022), Osmium isotopes fingerprint mantle controls on the genesis of an e…
Cerro de Pasco
Peru
1.05 ± 0.160.8 / 1.225main-stage pyrite, initial ratio (age 14.5-14.4 Ma)Saintilan et al. (2021), Osmium isotopic constraints on sulphide formation in the epither…
Cerro de Pasco
Peru
0.71 ± 0.450.15 / 1.164main-stage enargite, initial ratio (age 14.5-14.4 Ma)Saintilan et al. (2021), Osmium isotopic constraints on sulphide formation in the epither…
Colquijirca
Peru
1.41 ± 0.051.34 / 1.454main-stage pyrite, initial ratio (age 10.8-10.6 Ma)Saintilan et al. (2021), Osmium isotopic constraints on sulphide formation in the epither…
Colquijirca
Peru
0.83 ± 0.530.13 / 1.246main-stage enargite, initial ratio (age 10.8-10.6 Ma)Saintilan et al. (2021), Osmium isotopic constraints on sulphide formation in the epither…
Imiter
Morocco
0.175 ± 0.0210.144 / 0.1975epithermal silver-stage minerals (galena, sphalerite, pyrargyrite, Ag-Hg amalgam)Levresse et al. (2004), Osmium, sulphur, and helium isotopic results from the giant Neopr…
Imiter
Morocco
3.221 ± 0.7562.686 / 3.7552pyrite from rhyolitic domes (present-day ratio)Levresse et al. (2004), Osmium, sulphur, and helium isotopic results from the giant Neopr…
Imiter
Morocco
54.233 ± 57.5912.7 / 116.43pyrite and whole rock of the Neoproterozoic host black shales (present-day ratio)Levresse et al. (2004), Osmium, sulphur, and helium isotopic results from the giant Neopr…
Ladolam (Lihir Island)
Papouasie-Nouvelle-Guinée
0.25933 ± 0.179340.14762 / 0.524534gold ore (biotite and K-feldspar altered breccias)McInnes et al. (1999), Osmium isotope constraints on ore metal recycling in subduction zo…

Published 187Os/188Os (osmium) values, deposit by deposit

Cite this page

IsoFind Atlas (2026). 187Os/188Os of Epithermal deposits: published values. https://www.isofind.tech/isotopes/en/osmium-187os-188os/epithermal/ (accessed 2026-10-21).

@misc{isofind2026187os188osofepithermaldeposit,
  title = {187Os/188Os of Epithermal deposits: published values},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/osmium-187os-188os/epithermal/},
  note = {Accessed 2026-10-21}
}

Updated : 2026-10-21