Bussu (S'Aliderru, bentonite)
Sardinia, Italy
Otherbentonite
- Type
- Bentonite (Mg, Ca)
Smectite bentonite deposit. Mainly terrestrial deposition: distal lacustrine setting, parent material rhyodacitic to rhyolitic volcanics; lake water or saline groundwater alteration; Oligocene to Miocene. Köster et al. (2019): δ11B of purified smectites and fluid δ11B calculated for trigonal or tetrahedral boron at 25 and 90 °C.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.6 ± 0.9 ‰ | −0.9 / 2.2 ‰ | smectite (< 0.2 µm) treated with mannitol and ammonium-exchanged, structural boron Single sample, published mean and 2SD (uncertainty halved to 1σ): BU-A +0.6 (2SD 1.8, -0.9 to +2.2, 13.85 µg/g B). | Köster et al. (2019), The boron isotope geochemistry of smectites from sodium, magnesium … |
Deposits of the same type
- Central African Copperbelt (whole province) DR Congo and Zambia
- Witwatersrand basin South Africa
- Stelvio Italy
- Oris Italy
- Kupferschiefer, Lubin-Sieroszowice district Poland
- Timna Israël
- Datangpo-type manganese (Gaolou, Minle, Zhenxing) China
- Eyller Bruch bog iron ore Germany
Cite this page
IsoFind Atlas (2026). Bussu (S'Aliderru, bentonite), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/bussu-s-aliderru-bentonite/ (accessed 2026-10-20).
@misc{isofind2026bussusaliderrubentoniteisotop,
title = {Bussu (S'Aliderru, bentonite), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/bussu-s-aliderru-bentonite/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20