A long-lived hydrothermal system in Bushveld granites at the Zaaiplaats tin mine; lead isotope evidence

Tin mineralization at Zaaiplaats is hosted in alkali feldspar granites of the Lebowa Granite Suite which intrude the Rashoop Granophyre Suite. From the upper contact downward, the alkali feldspar granites include the marginal pegmatite, fine-grained Lease Granite and the coarse-grained Bobbejaankop Granite. The major mineralization styles consist of subhorizontal, tabular, low-grade orebodies in the Lease Granite, a lower zone of disseminated...