Western Puna salars (Arizaro, Río Grande, Antofalla)
Argentine Puna (Salta, Jujuy, Catamarca), Argentina
Other media
- Type
- Other medium
Western Puna salars with Na-Ca sulphates, carbonates and chlorides, almost borate-free, surrounded by Cenozoic volcanic rocks and Tertiary sediments (Kasemann et al., 2004); pond brines at about 10 °C, pH 7.2 to 8.0. Coordinates not published (map only).
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −5 ± 1.2 ‰ | −6.6 / −3.7 ‰ | 4 | salar brine (dissolved boron) Mean and standard deviation recalculated from 4 analyses, -6.6 to -3.7 (Arizaro NE -6.6; Arizaro SO -4.6; Río Grande N -3.7; Río Grande S -4.9). 39, 22, 23 and 138 mg/L B. | Kasemann et al. (2004), Boron isotope composition of geothermal fluids and borate mineral… |
| −5.9 ± 8.4 ‰ | −14.6 / 5.2 ‰ | 6 | salar halite Mean and standard deviation recalculated from 6 analyses, -14.6 to +5.2 (Arizaro NE -10.7; Arizaro SO -14.6; Río Grande N -14.2; Río Grande S -2.0; Antofalla S1/81 +1.2; Antofalla S1/82 +5.2). 847, 20, 921, 89, 68 and 62 mg/kg B. Halite follows neither the associated brine nor a constant fractionation factor. | Kasemann et al. (2004), Boron isotope composition of geothermal fluids and borate mineral… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Western Puna salars (Arizaro, Río Grande, Antofalla), isotope signatures. https://www.isofind.tech/isotopes/en/sites/salars-de-la-puna-occidentale-arizaro-rio-grande-antofalla/ (accessed 2026-10-19).
@misc{isofind2026westernpunasalarsarizaroriogr,
title = {Western Puna salars (Arizaro, Río Grande, Antofalla), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/salars-de-la-puna-occidentale-arizaro-rio-grande-antofalla/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19