Avondale
South Australia, Flinders Ranges, Australia
Mississippi Valley TypeZn-Pb
- Type
- Carbonate-hosted sulfide Zn-Pb
Flinders Ranges, the deformed and uplifted northern Adelaide geosyncline, hosted in Neoproterozoic to Cambrian carbonates. Highly radiogenic lead, anomalous relative to the Holmes-Houtermans and Stacey-Kramers models, attributed to the U- and Th-rich basement; nonsulfide and sulfide deposits fall on one line, hence genetically related.
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.322 ± 0.001 | 18.322 / 18.323 | 2 | galena Mean and standard deviation recalculated from 2 analyses, Table 1. Samples analysed twice (with and without column purification) are counted as two analyses. The abstract gives 18.332 as the 206Pb/204Pb minimum, the table 18.322. | Harkins et al. (2008), Lead isotope constraints on the origin of nonsulfide zinc and sulf… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.73 ± 0.002 | 15.729 / 15.732 | 2 | galena Mean and standard deviation recalculated from 2 analyses, Table 1. Samples analysed twice (with and without column purification) are counted as two analyses. The abstract gives 18.332 as the 206Pb/204Pb minimum, the table 18.322. | Harkins et al. (2008), Lead isotope constraints on the origin of nonsulfide zinc and sulf… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.266 ± 0.003 | 38.264 / 38.268 | 2 | galena Mean and standard deviation recalculated from 2 analyses, Table 1. Samples analysed twice (with and without column purification) are counted as two analyses. The abstract gives 18.332 as the 206Pb/204Pb minimum, the table 18.322. | Harkins et al. (2008), Lead isotope constraints on the origin of nonsulfide zinc and sulf… |
Deposits of the same type
- Ediacara Australia
- Weapowie Australia
- Wirrealpa Australia
- Fountain Head Australia
- Erics Australia
- Mount Chambers Australia
- Edeowie Australia
- Linda Australia
Cite this page
IsoFind Atlas (2026). Avondale, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/avondale/ (accessed 2026-10-13).
@misc{isofind2026avondaleisotopesignatures,
title = {Avondale, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/avondale/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13