Broken Hill (Aggeneys, South Africa)
Northern Cape, Namaqualand (Aggeneys), South Africa
SEDEXPb-Zn-Ag
- Type
- Metamorphosed stratiform Pb-Zn-Ag
Pb-Zn-Ag deposit of Early Proterozoic age in a dominantly clastic metasedimentary terrane, metamorphosed to amphibolite facies. Palmer and Slack (1989, Table 1): tourmaline at -13.82 ‰. Tourmalines of this kind of terrane range from -15.37 to -2.19 ‰ in the article; according to the authors, the boron source (continental crust, entrained seawater, evaporites) matters more than the formation temperature.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −13.82 ‰ | 1 | tourmaline of the massive sulfide or associated tourmalinite Single analysis (BH-18). Uncertainties: BH-18 -13.82 ± 0.32 ‰. | Palmer & Slack (1989), Boron isotopic composition of tourmaline from massive sulfide depo… |
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Cite this page
IsoFind Atlas (2026). Broken Hill (Aggeneys, South Africa), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/broken-hill-aggeneys-afrique-du-sud/ (accessed 2026-10-19).
@misc{isofind2026brokenhillaggeneyssouthafrica,
title = {Broken Hill (Aggeneys, South Africa), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/broken-hill-aggeneys-afrique-du-sud/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19