La Florida
Rionansa, Sierra de Arnero, Cantabria, Spain
Mississippi Valley TypeZn-Pb
- Type
- Carbonate-hosted Zn-Pb (MVT)
Cantabrian MVT Zn-Pb deposits, hosted in carbonates of different ages. Zinc comes from a single deep fluid (about 250 to 320 °C), precipitation occurring on mixing with a sulfur-rich connate fluid; δ66Zn reflects this mixing, unrelated to δ34S. Zinc mine hosted in Lower Cretaceous carbonates, with supergene hydrozincite. Indicative coordinates.
δ66Zn in ‰ (per mil) Values of the same system
Standard : NIST SRM 683
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.337 ± 0.342 ‰ | −0.804 / −0.003 ‰ | 6 | stage 1 sphalerite Mean and standard deviation recalculated from 6 samples, Table 1. | Pašava et al. (2014), Zinc and sulfur isotope variation in sphalerite from carbonate-host… |
| 0.271 ± 0.085 ‰ | 0.211 / 0.331 ‰ | 2 | supergene hydrozincite Mean and standard deviation recalculated from 2 samples, Table 1. Much heavier than sphalerite: fractionation during supergene weathering. | Pašava et al. (2014), Zinc and sulfur isotope variation in sphalerite from carbonate-host… |
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 14.4 ± 1.7 ‰ | 10.7 / 15.7 ‰ | 7 | stage 1 sphalerite Mean and standard deviation recalculated from 7 samples, Table 1. One more sample than for zinc (CL-4-2, zinc not measured). | Pašava et al. (2014), Zinc and sulfur isotope variation in sphalerite from carbonate-host… |
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Cite this page
IsoFind Atlas (2026). La Florida, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/la-florida/ (accessed 2026-10-13).
@misc{isofind2026lafloridaisotopesignatures,
title = {La Florida, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/la-florida/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13