Salar de Cauchari
Jujuy, eastern Puna, Argentina
OtherB
- Type
- Quaternary salar borates (ulexite)
Eastern Puna salar; Quaternary borates (mostly ulexite, minor borax or tincalconite) as massive beds or nodules up to 1.5 m thick (0.3 m on average), with carbonate, gypsum and halite, deposited by former thermal springs along fractures at the salar margin. Samples from the top 30 cm (Kasemann et al., 2004). Hosted by Ordovician and Tertiary sediments and Cenozoic volcanic rocks. 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 |
|---|---|---|---|---|
| −23.2 ‰ | 1 | Quaternary ulexite Single analysis (S7/79U). Fluid calculated with α(solution/ulexite) = 1.0096 (Antuco): -13.5 ‰. | Kasemann et al. (2004), Boron isotope composition of geothermal fluids and borate mineral… | |
| −18 ‰ | 1 | Quaternary borax Single analysis (S7/798B). Coexists with ulexite at -23.2 ‰ (borax/ulexite α of 1.0053 by our calculation, 1.0056 to 1.006 in the text for Cauchari and Loma Blanca). | Kasemann et al. (2004), Boron isotope composition of geothermal fluids and borate mineral… |
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Cite this page
IsoFind Atlas (2026). Salar de Cauchari, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/salar-de-cauchari/ (accessed 2026-10-19).
@misc{isofind2026salardecauchariisotopesignatu,
title = {Salar de Cauchari, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/salar-de-cauchari/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19