Salar de Centenario

Salta, 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). Surrounded by Precambrian-Paleozoic magmatic and metamorphic basement. 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
−20.2 ‰		1	Quaternary ulexite Single analysis (S1/15). Fluid calculated with α(solution/ulexite) = 1.0096 (Antuco): -10.5 ‰.	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 Centenario, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/salar-de-centenario/ (accessed 2026-10-19).

@misc{isofind2026salardecentenarioisotopesigna,
  title = {Salar de Centenario, isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/deposits/salar-de-centenario/},
  note = {Accessed 2026-10-19}
}

Updated : 2026-10-19