Abstract
Stepwise Pb leaching enabled direct, precise dating of individual samples of hydrothermal pyrrhotite (1.93 ± 0.05 Ga) and paragenetically older tourmaline (2.02 ± 0.02 Ga) from a shear-zone-hosted gold mineralization within the Archean Zimbabwe craton. These ages reveal a multistage Proterozoic hydrothermal event within the craton. The presence of a scheelite-tourmaline ore dated at 2.65 ± 0.01 Ga within the same shear zone may point to an Archean precursor. Because of its capability to demonstrate Pb isotope (dis)equilibrium between associated phases, single-mineral Pb leaching also traces genetic processes.
| Original language | English |
|---|---|
| Journal | Geology |
| Volume | 24 |
| Issue number | 9 |
| Pages (from-to) | 823-826 |
| Number of pages | 4 |
| ISSN | 0091-7613 |
| Publication status | Published - 1 Jan 1996 |